You searched for subject:(Mixed matrix membranes).
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Universidad de Cantabria
1.
Fernández Barquín, Ana.
Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation.
Degree: Máster en Ingeniería Química “Producción y consumo sostenible”, 2014, Universidad de Cantabria
URL: http://hdl.handle.net/10902/4980 
► ABSTRACT: The ability of membranes to separate efficiently CO2 from other light gases has received a great deal of attention due to its importance as…
(more)
▼ ABSTRACT: The ability of
membranes to separate efficiently CO2 from other light gases has received a great deal of attention due to its importance as alternative energy-efficient process reducing greenhouse gas emissions. The aim of research is to develop membrane materials that exhibit good performance and that are robust enough for long-term operations at the process temperatures. The permeability and selectivity values of
membranes should be as high as possible for their efficient use in industrial gas separation applications. Poly (1-trimethylsilyl-1-propyne) (PTMSP) has the highest known permeability of any polymer to gases. However, the high permeability is coupled with low ideal selectivity and its gas permeability decreases rather dramatically with time because of physical aging. Many attempts have been made to overcome this problem: crosslinking, substitution of functional groups,
mixed matrix membranes.
Mixed-
matrix membranes (MMMs) exhibit the molecular sieving effect and catalytic properties of inorganic fillers and combine desirable mechanical properties with the economical processing capacity of polymers. The main challenge of MMMs is the adhesion between the zeolites and the polymer to obtain a good interaction. Numerous attempts have been reported to incorporate zeolite particles into polymer matrices for gas separation because of their crystalline character with well-defined pore structures and shape selectivity properties.
In this work,
mixed matrix membranes have been prepared from PTMSP and small pore zeolites, such as NaA (Si/Al =1) and ITQ-29 (Si/Al = ∞), at different loadings, and the CO2 and N2 permeation has been measured at temperatures from 25 to 100ºC. The physical aging of the PTMSP is delayed. The permeability and selectivity increase with increasing zeolite A loading, up to an optimum zeolite loading of 10 wt.%. Maxwell model has been used to predict MMMs performance but the predicted values underestimate the experimental results. TGA and XRD reveal that the MMMs are thermally stable up to 300ºC and there is good interaction between zeolites and polymer.
Advisors/Committee Members: Casado Coterillo, Clara (advisor), Universidad de Cantabria (other).
Subjects/Keywords: Mixed-matrix membranes
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APA (6th Edition):
Fernández Barquín, A. (2014). Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation. (Masters Thesis). Universidad de Cantabria. Retrieved from http://hdl.handle.net/10902/4980
Chicago Manual of Style (16th Edition):
Fernández Barquín, Ana. “Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation.” 2014. Masters Thesis, Universidad de Cantabria. Accessed January 16, 2021.
http://hdl.handle.net/10902/4980.
MLA Handbook (7th Edition):
Fernández Barquín, Ana. “Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation.” 2014. Web. 16 Jan 2021.
Vancouver:
Fernández Barquín A. Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation. [Internet] [Masters thesis]. Universidad de Cantabria; 2014. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10902/4980.
Council of Science Editors:
Fernández Barquín A. Desarrollo de materiales de membrana robustos, selectivos y de alta permeabilidad para la separación de CO2: Development of highly permeable, selective and robust membrane materials for CO2 separation. [Masters Thesis]. Universidad de Cantabria; 2014. Available from: http://hdl.handle.net/10902/4980
University of Manchester
2.
Dawood, Bann Adel.
Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation.
Degree: 2017, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:307074
► This research aimed to develop the fabrication of mixed matrix membranes (MMMs) utilizing a polymer of intrinsic microporosity (PIM-1) with porous polyimide networks, and to…
(more)
▼ This research aimed to develop the fabrication of
mixed matrix membranes (MMMs) utilizing a polymer of intrinsic
microporosity (PIM-1) with porous polyimide networks, and to
explore their effect on gas transport properties. PIM-1 has been
chosen as polymer
matrix for its high surface area and high
sorption of gases. It is also considered as interesting candidate
for membrane gas separation. PIM-1 has been synthesized
successfully using high temperature methods (40 min, 160 °C) and
low temperature methods (72 h, 65 °C). Porous polyimide networks
have been chosen as organic fillers as they have good chemical
affinity to polymer
matrix and can adhere much better than
inorganic fillers. MPN-1 and MPN-2 were synthesized by condensation
polymerization of A2 (dianhydride) and B4 (tetraamino). The polymer
matrix (PIM-1) and network polyimide fillers were characterized
using various characterization techniques, including FTIR, NMR
spectroscopy, TGA and N2 sorption analysis. MMMs were fabricated
successfully utilizing PIM-1 with 10, 20, and 30wt. % loadings of
fillers. The MMMs prepared were homogenous on a macroscale. They
characterized using different techniques, such as FTIR
spectroscopy, powder x-ray diffraction, and scanning electron
microscopy. The gas transport properties of MMMs were obtained
using a time lag method. The treatment of MMMs with alcohol showed
an increase in the permeability and diffusivity of gases. We aimed
in this research to increase solubility of microporous polyimide
network (MPN-1) by decreasing the extent of network structure.
Different strategies have been utilized. First, using different
molar ratios and second, using end-capping modification. The
polymers were characterized using various techniques, including
FTIR, NMR spectroscopy and TGA. Following this, their CO2 uptake
and solubility are also examined.
Advisors/Committee Members: Budd, Peter.
Subjects/Keywords: Network Polyimides; Mixed matrix membranes;
Hyperbranched polyimides
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APA (6th Edition):
Dawood, B. A. (2017). Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:307074
Chicago Manual of Style (16th Edition):
Dawood, Bann Adel. “Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation.” 2017. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:307074.
MLA Handbook (7th Edition):
Dawood, Bann Adel. “Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation.” 2017. Web. 16 Jan 2021.
Vancouver:
Dawood BA. Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2021 Jan 16].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:307074.
Council of Science Editors:
Dawood BA. Mixed Matrix Membranes Consisting of Porous Polyimide
Networks and Polymers of Intrinsic Microporosity for Gas
Separation. [Doctoral Dissertation]. University of Manchester; 2017. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:307074
University of Colorado
3.
Singh, Zoban Veer.
Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations.
Degree: PhD, 2017, University of Colorado
URL: https://scholar.colorado.edu/chbe_gradetds/110
► Many polymeric materials are mechanically robust and thus can be used to form membranes for CO2/CH4 separations. Most of these polymers, however, do not…
(more)
▼ Many polymeric materials are mechanically robust and thus can be used to form
membranes for CO
2/CH
4 separations. Most of these polymers, however, do not have sufficiently high CO
2 permeabilities and CO
2/CH
4 selectivities. Some microporous solids have a high CO
2/CH
4 adsorption selectivity, and CO
2 diffuses fast in their pores, but the synthesis scale-up of thin
membranes formed from these materials is difficult. Small particles of such microporous solids can be embedded in a polymeric
matrix to form mechanically stable
mixed-
matrix membranes (MMMs). In this work, three new types of defect-free
mixed-
matrix membranes with both high CO
2 permeabilities and CO
2/CH
4 selectivities were synthesized by combining three organic and inorganic microporous solids with different polymers.
Room-temperature ionic liquid (RTIL)-based materials formed the
matrix for the zeolites SAPO-34 and SSZ-13 that have been shown to be selective for the separation of CO
2 from CH
4. The structures of the polymerized RTIL (poly(RTIL)) materials were modified to achieve CO
2/CH
4 separation that surpassed the Robeson upper bound. The interface between the zeolite particles and the surrounding poly(RTIL)-
matrix that often causes non-selective transport or pore blocking in other MMMs was optimized by adding free RTILs to obtain mechanically stable
membranes with high solid loadings and good separation performance.
Novel pillar[5]arene supra-molecular organic framework (P5-SOF) particles were used to form defect-free MMMs by solvent-casting with Matrimid-5218™, a commercially available uncharged polymer. These all-organic MMMs had very high CO
2/CH
4 selectivities that surpassed the Robeson upper bound but permeances were low. The CO
2 permeability of these
membranes was improved by adding different low-vapor-pressure liquids during membrane formation to optimize the interface between the polymer
matrix and the P5-SOF particles. MMMs containing
n-dodecane as the interfacing agent displayed the largest enhancements in CO
2 permeability while also maintaining high CO
2/CH
4 selectivity.
In this thesis work, we gained a new fundamental understanding of the microstructure of MMMs to optimize their transport properties for CO
2/CH
4 gas separation. The chemical compatibility between the different components of the membrane used in this study, polymer-solid interfacing, and particle loading all strongly affected the separation performance. Defect-free MMMs that are mechanically stable with separation properties that exceed those of other types of MMM’s were synthesized and these
membranes show potential for scale-up and commercialization.
Advisors/Committee Members: Richard D. Noble, Douglas L. Gin, Hans Funke, Wei Zhang, Will Medlin.
Subjects/Keywords: CH4; CO2; gas separations; membranes; mixed-matrix membranes; Chemical Engineering
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APA (6th Edition):
Singh, Z. V. (2017). Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/chbe_gradetds/110
Chicago Manual of Style (16th Edition):
Singh, Zoban Veer. “Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations.” 2017. Doctoral Dissertation, University of Colorado. Accessed January 16, 2021.
https://scholar.colorado.edu/chbe_gradetds/110.
MLA Handbook (7th Edition):
Singh, Zoban Veer. “Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations.” 2017. Web. 16 Jan 2021.
Vancouver:
Singh ZV. Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Jan 16].
Available from: https://scholar.colorado.edu/chbe_gradetds/110.
Council of Science Editors:
Singh ZV. Design and Evaluation of New Mixed-Matrix Membranes for CO2/CH4 Separations. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/chbe_gradetds/110
Arizona State University
4.
Inurria, Adam.
Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance.
Degree: Civil and Environmental Engineering, 2017, Arizona State University
URL: http://repository.asu.edu/items/44217
► Reverse osmosis (RO) membranes are considered the most effective treatment to remove salt from water. Specifically, thin film composite (TFC) membranes are considered the gold…
(more)
▼ Reverse osmosis (RO) membranes are considered the most
effective treatment to remove salt from water. Specifically, thin
film composite (TFC) membranes are considered the gold standard for
RO. Despite TFC membranes good performance, there are drawbacks to
consider including: permeability-selectivity tradeoff, chlorine
damage, and biofouling potential. In order to counter these
drawbacks, polyamide matrixes were embedded with various
nanomaterials called mixed matrix membranes (MMMs) or thin film
nanocomposites (TFNs). This research investigates the use of
graphene oxide (GO) and reduced graphene oxide (RGO) into the
polyamide matrix of a TFC membrane. GO and RGO have the potential
to alter the permeability-selectivity trade off by offering
nanochannels for water molecules to sieve through, protect
polyamide from trace amounts of chlorine, as well as increase the
hydrophilicity of the membrane thereby reducing biofouling
potential. This project focuses on the impacts of GO on the
permeability selectivity tradeoff. The hypothesis of this work is
that the permeability and selectivity of GO can be tuned by
controlling the oxidation level of the material. To test this
hypothesis, a range of GO materials were produced in the lab using
different graphite oxidation methods. The synthesized GOs were
characterized by X-ray diffraction and X-ray photoelectron
microscopy to show that the spacing is a function of the GO oxygen
content. From these materials, two were selected due to their
optimal sheet spacing between 3.4 and 7 angstroms and embedded into
desalination MMM. This work reveals that the water permeability
coefficient of MMM embedded with GO and RGO increased
significantly; however, that the salt permeability coefficient of
the membrane also increased. Future research directions are
proposed to overcome this limitation.
Subjects/Keywords: Environmental engineering; Desalination; Graphene Oxide; Mixed Matrix Membranes; Reverse Osmosis Membranes
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APA (6th Edition):
Inurria, A. (2017). Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/44217
Chicago Manual of Style (16th Edition):
Inurria, Adam. “Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance.” 2017. Masters Thesis, Arizona State University. Accessed January 16, 2021.
http://repository.asu.edu/items/44217.
MLA Handbook (7th Edition):
Inurria, Adam. “Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance.” 2017. Web. 16 Jan 2021.
Vancouver:
Inurria A. Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance. [Internet] [Masters thesis]. Arizona State University; 2017. [cited 2021 Jan 16].
Available from: http://repository.asu.edu/items/44217.
Council of Science Editors:
Inurria A. Graphene Oxide Mixed Matrix Membranes for Improved
Desalination Performance. [Masters Thesis]. Arizona State University; 2017. Available from: http://repository.asu.edu/items/44217
University of Alberta
5.
Zarro, Omar.
Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes.
Degree: MS, Department of Chemical and Materials
Engineering, 2014, University of Alberta
URL: https://era.library.ualberta.ca/files/th83m006v
► Separating hydrogen and carbon dioxide from syngas is a necessary step for many industrial processes. Membrane separations are an attractive solution as they can operate…
(more)
▼ Separating hydrogen and carbon dioxide from syngas is
a necessary step for many industrial processes. Membrane
separations are an attractive solution as they can operate at
process temperatures (200-500 °C) and operate with a simple
process. Pure thermally stable (up to 600 °C) clinoptilolite
zeolite was mixed with a Portland cement matrix, pressed, and cured
to prepare composite membranes. Such systems offer scalable,
thermally stable, and low cost membranes for H2 and CO2 separation
from syngas. Pure cement membranes demonstrated CO2 impermeability.
Single gas permeation measurement of H2 and CO2 was conducted and
demonstrated high H2/CO2 selectivities up to 115 with permeances on
the order of 10-9 mol/m2·Pa·s for the composite membranes. The gas
diffusion tests firmly exhibited molecular sieving toward H2 and
CO2. These results suggest that cost-effective natural zeolites
combined with ordinary Portland cement are capable of selective
separation of H2 and encourage future development of this
concept.
Subjects/Keywords: Natural Zeolite; Gas Permeation Measurement; Membranes; Syngas; Cement; Membrane gas separation; Clinoptilolite; Mixed matrix membranes
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APA (6th Edition):
Zarro, O. (2014). Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/th83m006v
Chicago Manual of Style (16th Edition):
Zarro, Omar. “Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes.” 2014. Masters Thesis, University of Alberta. Accessed January 16, 2021.
https://era.library.ualberta.ca/files/th83m006v.
MLA Handbook (7th Edition):
Zarro, Omar. “Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes.” 2014. Web. 16 Jan 2021.
Vancouver:
Zarro O. Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes. [Internet] [Masters thesis]. University of Alberta; 2014. [cited 2021 Jan 16].
Available from: https://era.library.ualberta.ca/files/th83m006v.
Council of Science Editors:
Zarro O. Separation of Hydrogen and Carbon Dioxide from Syngas Using
Clinoptilolite Natural Zeolite and Ordinary Portland Cement
Composite Membranes. [Masters Thesis]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/th83m006v
6.
Althumayri, Khalid Abdulmohsen M.
POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION.
Degree: 2016, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:299896
► Membrane-based gas separation processes are an area of interest owing to their high industrial demand for a wide range of applications, such as natural gas…
(more)
▼ Membrane-based gas separation processes are an area
of interest owing to their high industrial demand for a wide range
of applications, such as natural gas purification from CO2 or H2,
and N2 or O2 separation from air. This thesis is focused on
developing and investigating polymeric-based
membranes. Firstly,
novel
mixed matrix membranes (MMMs) were prepared, incorporating
few-layer graphene in the polymer of intrinsic microporosity PIM-1.
Secondly, novel polyphenylene-based polymers of intrinsic
microporosity (PP-PIMs) were synthesised.An optimum preparation
method of graphene/PIM-1 MMMs (GPMMMs) was established from numbers
of experiments. In this study, graphene exfoliation was a step
towards GPMMM preparation. Starting from graphene exfoliation in
chloroform, as a good solvent for PIM-1, enhancement in graphene
dispersibility was obtained with addition of PIM-1. This result
helped in GPMMM preparation with high graphene content (up to 4
wt.%). Characterizations techniques such as Raman spectroscopy and
scanning electron microscopy (SEM) of GPMMMs, confirmed the few
layer graphene content, with morphology changes in the polymeric
matrix compared to pure PIM-1.Gas permeability results of GPMMMs
showed an enhancement in permeability with low loading graphene
(0.1 wt.%) using a relatively low permeability PIM-1 batch, due to
high water content. However, less influence of graphene
incorporation on permeability was observed with a highly permeable
PIM-1 batch. Reduction in permeability over time, termed an ageing
effect, is known for a polymer of high-free volume like PIM-1.
However, the enhancement of GPMMMs permeability after eight months
storage was shown to be retained.Novel PP-PIMs were prepared from
novel precursors using a series known organic reactions. PP-PIMs
were divided into two groups of polymers based on their
polymerization reactions. A group of polymers were prepared from
condensation polymerization between bis-catecol monomers and
tetrafluoroterephthalonitrile (TFTPN). Another group of polymers
were prepared from Diels Alder polymerization between monomers of
terminal bisphenylacetylene groups and bis
tetraphenylcyclopentadienones (TPCPDs). All of which yielded
polymers with apparent BET surface area in the range 290-443 m2
g-1.
Advisors/Committee Members: GARDINER, JOHN JM, Gardiner, John, Budd, Peter.
Subjects/Keywords: Mixed matrix membranes; Polymers of intrinsic microporosity; Graphene; Gas permeation
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APA (6th Edition):
Althumayri, K. A. M. (2016). POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:299896
Chicago Manual of Style (16th Edition):
Althumayri, Khalid Abdulmohsen M. “POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION.” 2016. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:299896.
MLA Handbook (7th Edition):
Althumayri, Khalid Abdulmohsen M. “POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION.” 2016. Web. 16 Jan 2021.
Vancouver:
Althumayri KAM. POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Jan 16].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:299896.
Council of Science Editors:
Althumayri KAM. POLYMERS OF INTRINSIC MICROPOROSITY AND INCORPORATION OF
GRAPHENE INTO PIM-1 FOR GASSEPARATION. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:299896
7.
Lewis, Jeremy.
Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes.
Degree: MEngr, Chemical Engineering, 2019, University of North Dakota
URL: https://commons.und.edu/theses/2468
► Mixed matrix membranes are one class of membrane material that are an especially promising separation media. By adding a particle phase to a matrix…
(more)
▼ Mixed matrix membranes are one class of membrane material that are an especially promising separation media. By adding a particle phase to a
matrix phase, multiple mechanistic pathways become available that are not present in pristine organic or inorganic
membranes. These pathways can be exploited to better enhance separation performance for a variety of applications.
This research has focused on a specific
mixed matrix membrane, which contains bio-derived activated carbon particles in a polysulfone
matrix. In proper selection of activating agent, this research has shown that the surface functional groups of the activated carbon are highly influenced. This can lead to better polymer filler interaction and fewer defects. This research has also provided evidence to support the idea that by changing various membrane formation parameters such as choice of solvent, nonsolvent, and additives, can influence many of the membrane’s thermal, physical, and separation properties.
This work has shown the viability of biochar and activated carbon derived from biochar are fillers that are worth investigating in
mixed matrix membranes. The
membranes produced were shown to have versatile applications with modifications to formation process. The applications studied include liquid phase: acid blue filtration and gas phase: CO2/N2, CO2/CH4, and N2/CH4.
Advisors/Committee Members: Ali Alshami.
Subjects/Keywords: activated carbon; dye filtration; gas separation; Mixed matrix membranes; nanocomposites; separations
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APA (6th Edition):
Lewis, J. (2019). Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/2468
Chicago Manual of Style (16th Edition):
Lewis, Jeremy. “Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes.” 2019. Masters Thesis, University of North Dakota. Accessed January 16, 2021.
https://commons.und.edu/theses/2468.
MLA Handbook (7th Edition):
Lewis, Jeremy. “Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes.” 2019. Web. 16 Jan 2021.
Vancouver:
Lewis J. Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes. [Internet] [Masters thesis]. University of North Dakota; 2019. [cited 2021 Jan 16].
Available from: https://commons.und.edu/theses/2468.
Council of Science Editors:
Lewis J. Enhancing Liquid And Gas Separation With Activated Carbon Mixed-Matrix Membranes. [Masters Thesis]. University of North Dakota; 2019. Available from: https://commons.und.edu/theses/2468
8.
Ebneyamini, Arian.
Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
.
Degree: 2017, University of Ottawa
URL: http://hdl.handle.net/10393/36043
► In this thesis, a theoretical description of mass transport through membranes used in pervaporation separation processes has been investigated for both dense polymeric membranes and…
(more)
▼ In this thesis, a theoretical description of mass transport through membranes used in pervaporation separation processes has been investigated for both dense polymeric membranes and mixed matrix membranes (MMMs). Regarding the dense polymeric membranes, the Maxwell-Stefan model was extended to consider the effect of the operating temperature and membrane swelling on the mass transport of species within the membrane. The model was applied semi-empirically to predict the membrane properties and separation performance of a commercial Polydimethylsiloxane (PDMS) membrane used in the pervaporation separation of butanol from binary aqueous solutions. It was observed that the extended Maxwell-Stefan model has an average error of 10.5 % for the prediction of partial permeate fluxes of species compared to roughly 22% for the average prediction error of the Maxwell-Stefan model. Moreover, the parameters of the model were used to estimate the sorption properties and diffusion coefficients of components through the PDMS membrane at different butanol feed concentrations and operating temperatures. The estimated values of the sorption properties were observed to be in agreement with the literature experimental data for transport properties of butanol and water in silicone membranes while an exact comparison for the diffusion coefficient was not possible due to large fluctuations in literature values.
With respect to the MMMs, a new model was developed by combining a one-directional transport Resistance-Based (RB) model with the Finite Difference (FD) method to derive an analytical model for the prediction of three-directional (3D) effective permeability of species within ideal mixed matrix membranes. The main novelty of the proposed model is to avoid the long convergence time of the FD method while the three-directional (3D) mass transport is still considered for the simulation. The model was validated using experimental pervaporation data for the separation of butanol from aqueous solutions using Polydimethylsiloxane (PDMS)/activated carbon nanoparticles membranes and using data from the literature for gas separation application with MMMs. Accurate predictions were obtained with high coefficient of regression (R2) between the calculated and experimental values for both applications.
Subjects/Keywords: Pervaporation;
Butanol;
PDMS;
Mixed Matrix Membranes;
Modelling of Mass Transport
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APA (6th Edition):
Ebneyamini, A. (2017). Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/36043
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ebneyamini, Arian. “Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
.” 2017. Thesis, University of Ottawa. Accessed January 16, 2021.
http://hdl.handle.net/10393/36043.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ebneyamini, Arian. “Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
.” 2017. Web. 16 Jan 2021.
Vancouver:
Ebneyamini A. Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
. [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10393/36043.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ebneyamini A. Modelling of Pervaporation Separation of Butanol from Aqueous Solutions Using Polydimethylsiloxane (PDMS) Mixed Matrix Membranes
. [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/36043
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Althumayri, Khalid Abdulmohsen M.
Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation.
Degree: PhD, 2016, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/polymers-of-intrinsic-microporosity-and-incorporation-of-graphene-into-pim1-for-gasseparation(4e8909e1-4c5d-4ba2-b8a3-276295b3d5c4).html
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697781
► Membrane-based gas separation processes are an area of interest owing to their high industrial demand for a wide range of applications, such as natural gas…
(more)
▼ Membrane-based gas separation processes are an area of interest owing to their high industrial demand for a wide range of applications, such as natural gas purification from CO2 or H2, and N2 or O2 separation from air. This thesis is focused on developing and investigating polymeric-based membranes. Firstly, novel mixed matrix membranes (MMMs) were prepared, incorporating few-layer graphene in the polymer of intrinsic microporosity PIM-1. Secondly, novel polyphenylene-based polymers of intrinsic microporosity (PP-PIMs) were synthesised. An optimum preparation method of graphene/PIM-1 MMMs (GPMMMs) was established from numbers of experiments. In this study, graphene exfoliation was a step towards GPMMM preparation. Starting from graphene exfoliation in chloroform, as a good solvent for PIM-1, enhancement in graphene dispersibility was obtained with addition of PIM-1. This result helped in GPMMM preparation with high graphene content (up to 4 wt.%). Characterizations techniques such as Raman spectroscopy and scanning electron microscopy (SEM) of GPMMMs, confirmed the few layer graphene content, with morphology changes in the polymeric matrix compared to pure PIM-1.Gas permeability results of GPMMMs showed an enhancement in permeability with low loading graphene (0.1 wt.%) using a relatively low permeability PIM-1 batch, due to high water content. However, less influence of graphene incorporation on permeability was observed with a highly permeable PIM-1 batch. Reduction in permeability over time, termed an ageing effect, is known for a polymer of high-free volume like PIM-1. However, the enhancement of GPMMMs permeability after eight months storage was shown to be retained. Novel PP-PIMs were prepared from novel precursors using a series known organic reactions. PP-PIMs were divided into two groups of polymers based on their polymerization reactions. A group of polymers were prepared from condensation polymerization between bis-catecol monomers and tetrafluoroterephthalonitrile (TFTPN). Another group of polymers were prepared from Diels Alder polymerization between monomers of terminal bisphenylacetylene groups and bis tetraphenylcyclopentadienones (TPCPDs). All of which yielded polymers with apparent BET surface area in the range 290-443 m2 g-1.
Subjects/Keywords: 546; Mixed matrix membranes; Polymers of intrinsic microporosity; Graphene; Gas permeation
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APA (6th Edition):
Althumayri, K. A. M. (2016). Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/polymers-of-intrinsic-microporosity-and-incorporation-of-graphene-into-pim1-for-gasseparation(4e8909e1-4c5d-4ba2-b8a3-276295b3d5c4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697781
Chicago Manual of Style (16th Edition):
Althumayri, Khalid Abdulmohsen M. “Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation.” 2016. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/polymers-of-intrinsic-microporosity-and-incorporation-of-graphene-into-pim1-for-gasseparation(4e8909e1-4c5d-4ba2-b8a3-276295b3d5c4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697781.
MLA Handbook (7th Edition):
Althumayri, Khalid Abdulmohsen M. “Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation.” 2016. Web. 16 Jan 2021.
Vancouver:
Althumayri KAM. Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Jan 16].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/polymers-of-intrinsic-microporosity-and-incorporation-of-graphene-into-pim1-for-gasseparation(4e8909e1-4c5d-4ba2-b8a3-276295b3d5c4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697781.
Council of Science Editors:
Althumayri KAM. Polymers of intrinsic microporosity and incorporation of graphene into PIM-1 for gas separation. [Doctoral Dissertation]. University of Manchester; 2016. Available from: https://www.research.manchester.ac.uk/portal/en/theses/polymers-of-intrinsic-microporosity-and-incorporation-of-graphene-into-pim1-for-gasseparation(4e8909e1-4c5d-4ba2-b8a3-276295b3d5c4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697781
University of Manchester
10.
Cao, Guanhai.
Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites.
Degree: 2019, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319825
► Metal-Organic Frameworks (MOFs) and graphene oxide (GO) are two kinds of materials capturing plenty of attention and research enthusiasm because of their unique structures and…
(more)
▼ Metal-Organic Frameworks (MOFs) and graphene oxide
(GO) are two kinds of materials capturing plenty of attention and
research enthusiasm because of their unique structures and
extraordinary properties. This work aims to design and build a new
series of composites based on MOFs and GO, to integrate the merits
of these two functional materials and to expand their
implementation in a broad range of areas. A series of MFM-300s were
successfully prepared following the matured method developed by
Prof. Martin Schroder and Dr Sihai Yang's group. Considering the
mild synthesis conditions and solid understanding of MFM-300(In),
the composite MFM-300(In)@GO was selected as the start of the
investigations. The composites with different MFM-300(In)/GO ratio
were successfully prepared. After being characterised by Raman
spectroscopy, PXRD, TGA, element analysis and SEM and TEM imaging,
the composites were proven to maintain the crystalline structure of
MFM-300(In) and the GO sheet structure. Although there is so far no
suitable method to directly determine and identify the fine bonding
situation between two parental materials in the composite, the
comparison to the mixtures of MFM-300(In) and GO powders provided
convincing evidence indicating that chemical bonds were built
during the formation of the composite MFM-300(In)@GOs. Besides, the
stability of MFM-300s under electron beams was tested. Moreover,
the composites have been proven with decent sorption property like
MFM-300(In). Using the composites as filler remarkably increased
the CO2/CH4 selectivity of the
mixed matrix membranes (MMMs) based
on Matrimid®. The value of membrane MFM-300(In)@GO-4#4 reached
63.22, which is higher than any other reported MOF/Matrimid® MMMs
systems. The composites were also used in enhancing proton
conductivity. The proton conductivity of the composites is 102 ~
103 times higher than the bare MFM-300(In). However, the composites
did not present superiority in Xylene isomers
separation.
Advisors/Committee Members: YANG, SIHAI S, Schroder, Martin, Yang, Sihai.
Subjects/Keywords: MFM-300(In); Graphene oxide; composite; mixed matrix membranes; proton conductivity
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APA (6th Edition):
Cao, G. (2019). Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319825
Chicago Manual of Style (16th Edition):
Cao, Guanhai. “Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites.” 2019. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319825.
MLA Handbook (7th Edition):
Cao, Guanhai. “Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites.” 2019. Web. 16 Jan 2021.
Vancouver:
Cao G. Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Jan 16].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319825.
Council of Science Editors:
Cao G. Synthesis, Characterisation and Property of Metal-Organic
Framework/Graphene Oxide Composites. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319825
University of Kentucky
11.
Linck, Nicholas W.
MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS.
Degree: 2018, University of Kentucky
URL: https://uknowledge.uky.edu/cme_etds/89
► Mixed matrix membranes (MMM) offer one potential path toward exceeding the Robeson upper bound of selectivity versus permeability for gas separation performance while maintaining the…
(more)
▼ Mixed matrix membranes (MMM) offer one potential path toward exceeding the Robeson upper bound of selectivity versus permeability for gas separation performance while maintaining the benefits of solution processing. Many inorganic materials, such as zeolites, metal-organic frameworks, or carbon nanotubes, can function as molecular sieves, but as stand-alone membranes are brittle and difficult to manufacture. Incorporating them into a more robust polymeric membrane matrix has the potential to mitigate this issue.
In this work, phase inversion polymer solution processing for the fabrication and testing of asymmetric flat sheet mixed matrix membranes was employed with CVD-derived multiwall carbon nanotubes (MWCNTs) dispersed in a polyethersulfone (PES) matrix. The effect of MWCNT loading on membrane separation performance was examined. Notably, a distinct enhancement in selectivity was measured for several gas pairs (including O2/N2) at relatively low MWCNT loading, with a peak in selectivity observed at 0.1 wt% loading relative to PES. In addition, no post-treatment (e.g. PDMS caulking) was required to achieve selectivity in these membranes. In contrast, neat PES membranes and those containing greater than 0.5 wt.% MWCNT showed gas selectivity characteristic of Knudsen diffusion through pinhole defects. These results suggested that at low loading, the presence of MWCNTs suppressed the formation of surface defects in the selective layer in flat sheet mixed matrix membranes.
Additionally, a bench-scale, single-filament hollow fiber membrane spinning line was designed and purpose-built at the University of Kentucky Center for Applied Energy Research (CAER). Hollow fiber membrane spinning capability was developed using polyethersulfone (PES) solution dopes, and the process was expanded to include polysulfone (PSf) as well as mixed matrix membranes. The effects of key processing parameters, including the ratio of bore to dope velocities, the spinning air gap length, and the draw-down ratio, were systematically investigated. Finally, direct hollow fiber analogues to flat sheet mixed matrix membranes were characterized. Consistent with the flat sheet experiments, the mixed matrix hollow fiber membranes showed a local maximum in selectivity at a nominal loading of 0.1 wt.% MWCNT relative to the polymer, suggesting that the pinhole suppression effect introduced by MWCNTs was not limited to flat sheet membrane casting.
The development of asymmetric hollow fiber mixed matrix membrane processing and testing capability at the UK Center for Applied Energy Research provides a platform for the further development of gas separation membranes. Using the tools developed through this work, it is possible to further push the frontiers of mixed matrix gas separation by expanding the capability to include more polymers, inorganic fillers, and post treatment processes which previously have been focused primarily on the flat sheet membrane geometry.
Subjects/Keywords: Hollow fiber membranes; mixed matrix membranes; gas separation; carbon nanotubes; polyethersulfone; Membrane Science; Polymer and Organic Materials
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APA ·
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APA (6th Edition):
Linck, N. W. (2018). MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS. (Doctoral Dissertation). University of Kentucky. Retrieved from https://uknowledge.uky.edu/cme_etds/89
Chicago Manual of Style (16th Edition):
Linck, Nicholas W. “MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS.” 2018. Doctoral Dissertation, University of Kentucky. Accessed January 16, 2021.
https://uknowledge.uky.edu/cme_etds/89.
MLA Handbook (7th Edition):
Linck, Nicholas W. “MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS.” 2018. Web. 16 Jan 2021.
Vancouver:
Linck NW. MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS. [Internet] [Doctoral dissertation]. University of Kentucky; 2018. [cited 2021 Jan 16].
Available from: https://uknowledge.uky.edu/cme_etds/89.
Council of Science Editors:
Linck NW. MIXED MATRIX FLAT SHEET AND HOLLOW FIBER MEMBRANES FOR GAS SEPARATION APPLICATIONS. [Doctoral Dissertation]. University of Kentucky; 2018. Available from: https://uknowledge.uky.edu/cme_etds/89
Universitat Politècnica de València
12.
Escorihuela Roca, Sara.
Novel gas-separation membranes for intensified catalytic reactors
.
Degree: 2019, Universitat Politècnica de València
URL: http://hdl.handle.net/10251/121139
► [ES] La presente tesis doctoral se centra en el desarrollo de nuevas membranas de separación de gases, así como su empleo in-situ en reactores catalíticos…
(more)
▼ [ES] La presente tesis doctoral se centra en el desarrollo de nuevas membranas de separación de gases, así como su empleo in-situ en reactores catalíticos de membrana para la intensificación de procesos. Para este propósito, se han sintetizado varios materiales, como polímeros para la fabricación de membranas, catalizadores tanto para la metanación del CO2 como para la reacción de síntesis de Fischer-Tropsch, y diversas partículas inorgánicas nanométricas para su uso en membranas de matriz mixta. En lo referente a la fabricación de las membranas, la tesis aborda principalmente dos tipos: orgánicas e inorgánicas. Con respecto a las membranas orgánicas, se han considerado diferentes materiales poliméricos, tanto para la capa selectiva de la membrana, así como soporte de la misma. Se ha trabajado con poliimidas, puesto que son materiales con temperaturas de transición vítrea muy alta, para su posterior uso en reacciones industriales que tienen lugar entre 250-300 ºC. Para conseguir membranas muy permeables, manteniendo una buena selectividad, es necesario obtener capas selectivas de menos de una micra. Usando como material de soporte otro tipo de polímero, no es necesario estudiar la compatibilidad entre ellos, siendo menos compleja la obtención de capas finas. En cambio, si el soporte es de tipo inorgánico, un exhaustivo estudio de la relación entre la concentración y la viscosidad de la solución polimérica es altamente necesario. Diversas partículas inorgánicas nanométricas se estudiaron para favorecer la permeación de agua a través de los materiales poliméricos. En segundo lugar, en cuanto a membranas inorgánicas, se realizó la funcionalización de una membrana de paladio para favorecer la permeación de hidrógeno y evitar así la contaminación por monóxido de carbono. El motivo por el cual se dopó con otro metal la capa selectiva de la membrana metálica fue para poder emplearla en un reactor de Fischer-Tropsch. Con relación al diseño y fabricación de los reactores, durante esta tesis, se desarrolló el prototipo de un microreactor para la metanación de CO2, donde una membrana polimérica de capa fina selectiva al agua se integró para evitar la desactivación del catalizador, y a su vez desplazar el equilibrio y aumentar la conversión de CO2. Por otro lado, se rediseñó un reactor de Fischer-Tropsch para poder introducir una membrana metálica selectiva a hidrogeno y poder inyectarlo de manera controlada. De esta manera, y siguiendo estudios previos, el objetivo fue mejorar la selectividad a los productos deseados mediante el hidrocraqueo y la hidroisomerización de olefinas y parafinas con la ayuda de la alta presión parcial de hidrógeno.
Advisors/Committee Members: Escolástico Rozalén, Sonia (advisor), Serra Alfaro, José Manuel (advisor).
Subjects/Keywords: Gas-separation membranes;
Catalytic membrane reactors;
Polymer/ceramic thin film composite membrane;
Mixed matrix membranes;
Pd-based membranes;
Water vapor permeability;
Hydrogen;
Carbon dioxide;
CO2 methanation;
Fischer-Tropsch reaction
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APA ·
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Export
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APA (6th Edition):
Escorihuela Roca, S. (2019). Novel gas-separation membranes for intensified catalytic reactors
. (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/121139
Chicago Manual of Style (16th Edition):
Escorihuela Roca, Sara. “Novel gas-separation membranes for intensified catalytic reactors
.” 2019. Doctoral Dissertation, Universitat Politècnica de València. Accessed January 16, 2021.
http://hdl.handle.net/10251/121139.
MLA Handbook (7th Edition):
Escorihuela Roca, Sara. “Novel gas-separation membranes for intensified catalytic reactors
.” 2019. Web. 16 Jan 2021.
Vancouver:
Escorihuela Roca S. Novel gas-separation membranes for intensified catalytic reactors
. [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2019. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10251/121139.
Council of Science Editors:
Escorihuela Roca S. Novel gas-separation membranes for intensified catalytic reactors
. [Doctoral Dissertation]. Universitat Politècnica de València; 2019. Available from: http://hdl.handle.net/10251/121139
13.
Bryan, Nicholas James.
PEBAX-based mixed matrix membranes for post-combustion carbon capture.
Degree: PhD, 2018, University of Edinburgh
URL: http://hdl.handle.net/1842/31239
► Polymeric membranes exhibit a trade-off between permeability and selectivity in gas separations which limits their viability as an economically feasible post-combustion carbon capture technology. One…
(more)
▼ Polymeric membranes exhibit a trade-off between permeability and selectivity in gas separations which limits their viability as an economically feasible post-combustion carbon capture technology. One approach to improve the separation properties of polymeric membranes is the inclusion of particulate materials into the polymer matrix to create what are known as mixed matrix membranes (MMMs). By combining the polymer and particulate phases, beneficial properties of both can be seen in the resulting composite material. One of the most notable challenges in producing mixed matrix membranes is in the formation of performance-hindering defects at the polymer-filler interface. Non-selective voids or polymer chain rigidification are but two non-desirable effects which can be observed. The material selection and synthesis route are key to minimising these defects. Thin membranes are also highly desirable to achieve greater gas fluxes and improved economical separation processes. Hence smaller nano-sized particles are of particular interest to minimise the disruption to the polymer matrix. This is a challenge due to the tendency of some small particles to form agglomerations. This work involved introducing novel nanoscale filler particles into PEBAX MH1657, a commercially available block-copolymer consisting of poly(ethylene oxide) and nylon 6 chains. Poly(ether-b-amide) materials possess an inherently high selectivity for the CO2/N2 separation due to polar groups in the PEO chain but suffer from low permeabilities. Mixed matrix membranes were fabricated with PEBAX MH1657 primarily using two filler particles, nanoscale ZIF-8 and novel nanoscale MCM-41 hollow spheres. This work primarily investigated the effects of the filler loading on both the morphology and gas transport properties of the composite materials. The internal structure of the membranes was examined using scanning electron microscopy (SEM), and the gas transport properties determined using a bespoke time-lag gas permeation apparatus. ZIF-8 is a zeolitic imidazolate framework which possesses small pore windows that may favour CO2 transport over that of N2. ZIF-8-PEBAX membranes were successfully synthesised up to 7wt.%. It was found that for filler loadings below 5wt.%, the ZIF-8 was well dispersed within the polymer phase. At these loadings modest increases in the CO2 permeability coeffcient of 0-20% compared to neat PEBAX were observed. Above this 5wt.% loading large increases in both CO2, N2 and He permeability coeffcients coincided with the presence of large micron size clusters formed of hundreds of filler ZIF-8 particles. The increases in permeability were attributed to voids observed within the clusters. MCM-41 is a metal organic framework that has seen notable interest in the field of carbon capture, due to its tunable pore size and ease of functionalisation. Two types of novel MCM-41 hollow sphere (MCM-41-HS) of varying pore size were incorporated into PEBAX and successfully used to fabricate MMMs up to 10wt.%. SEM showed the MCM-41 generally interacted…
Subjects/Keywords: 628.5; carbon capture and storage; gas separation membranes; polymeric membranes; nanoscale porous materials; mixed matrix membranes; polymer-filler interface; PEBAX MH1657; ZIF-8
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APA ·
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MLA ·
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CSE |
Export
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APA (6th Edition):
Bryan, N. J. (2018). PEBAX-based mixed matrix membranes for post-combustion carbon capture. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/31239
Chicago Manual of Style (16th Edition):
Bryan, Nicholas James. “PEBAX-based mixed matrix membranes for post-combustion carbon capture.” 2018. Doctoral Dissertation, University of Edinburgh. Accessed January 16, 2021.
http://hdl.handle.net/1842/31239.
MLA Handbook (7th Edition):
Bryan, Nicholas James. “PEBAX-based mixed matrix membranes for post-combustion carbon capture.” 2018. Web. 16 Jan 2021.
Vancouver:
Bryan NJ. PEBAX-based mixed matrix membranes for post-combustion carbon capture. [Internet] [Doctoral dissertation]. University of Edinburgh; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1842/31239.
Council of Science Editors:
Bryan NJ. PEBAX-based mixed matrix membranes for post-combustion carbon capture. [Doctoral Dissertation]. University of Edinburgh; 2018. Available from: http://hdl.handle.net/1842/31239
University of Manchester
14.
Tamaddondar, Marzieh.
SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES.
Degree: 2019, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320369
► The need for more-efficient and environmentally-friendly CO2 separation techniques is becoming more and more evident for a carbon-constrained world. High performance membrane materials, such as…
(more)
▼ The need for more-efficient and
environmentally-friendly CO2 separation techniques is becoming more
and more evident for a carbon-constrained world. High performance
membrane materials, such as Polymers of Intrinsic Microporosity
(PIMs) and specifically PIM-1, can promote faster growth of the
technology of membrane gas separation. However, despite the
potential of high free volume polymers such as PIM-1, the decay in
their performance over time has inhibited a full exploitation of
these materials and this has been the motive for the current
project. This research explores a variety of methods to improve the
initial and/or the long term performance of PIM-1-based
membranes
for CO2 separation. Expanding on the current studies on PIM-1-based
membranes, it has been tried to focus on novel approaches for
fabrication of
membranes and development of materials. The explored
routes in this research include: in situ PIM-1 synthesis, i.e.
integration of PIM-1 synthesis and thin film composite (TFC)
membrane fabrication, synthesis of novel crosslinked materials for
incorporation into composite
membranes based on PIM-1 and grafting
reactions to improve the compatibility between the two phases of
PIM-1-based composite
membranes. In situ synthesis of PIM-1 and
highly crosslinked network-PIM-1 was investigated on porous organic
and inorganic supports with high thermal and chemical stability.
Interfacial polymerisation of an octafluoro and a tetrahydroxy
monomer led to promising CO2/CH4 selectivity (~ 15) for the in situ
generated highly crosslinked TFC membrane. A highly-crosslinked
network variant of PIM-1 with (ultra-)microporous nanoplatelet
structure was successfully synthesized here for the first time. A
noticeable improvement in the CO2/CH4
mixed-gas (1:1, v:v)
separation performance of PIM-1
membranes at 2 atm transmembrane
pressure difference and 298 K was obtained upon incorporation of
network-PIM-1 nanoplatelets in PIM-1 continuous
matrix.
Low-crosslink-density (LCD) network-PIM-1 was also synthesised and
was incorporated into PIM-1-based
Mixed Matrix Membranes (MMMs).
Conventional mixing/casting method or grafting PIM-1 onto LCD
network-PIM-1 was explored as two separate approaches for the
preparation of MMMs. The obtained MMMs based on grafting PIM-1 onto
LCD network-PIM-1 showed a noticeable improvement in the aging
behaviour, compared to PIM-1
membranes and the
conventionally-fabricated MMMs.
Advisors/Committee Members: QUAYLE, PETER P, Budd, Peter, Quayle, Peter.
Subjects/Keywords: Polymer of Intrinsic Microporosity; PIM-1; Membrane; CO2 capture; Gas separation; Mixed Matrix Membranes; Closslinking; Aging; In situ synthesis; Grafting
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APA (6th Edition):
Tamaddondar, M. (2019). SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320369
Chicago Manual of Style (16th Edition):
Tamaddondar, Marzieh. “SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES.” 2019. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320369.
MLA Handbook (7th Edition):
Tamaddondar, Marzieh. “SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES.” 2019. Web. 16 Jan 2021.
Vancouver:
Tamaddondar M. SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Jan 16].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320369.
Council of Science Editors:
Tamaddondar M. SYNTHESIS AND FABRICATION ROUTES FOR PIM-1-BASED
MEMBRANES. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320369
Virginia Tech
15.
Vaughan, Benjamin Ray.
Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations.
Degree: PhD, Chemical Engineering, 2007, Virginia Tech
URL: http://hdl.handle.net/10919/26908
► It is well known that clays dispersed in a polymer matrix decrease the permeability of all gases through that membrane. Our objective was to explore…
(more)
▼ It is well known that clays dispersed in a polymer
matrix decrease the permeability of all gases through that membrane. Our objective was to explore the effects on transport when a microporous layered aluminophosphate was added to a polymer
matrix. The clay like layered aluminophosphate used contains sheets with 8MR ring openings in the size range of 3-4 Ã . The molecular level dispersion of this material into a polymer
matrix is theorized to increase selectivity by molecular sieving. A previous study performed in our laboratory showed an increase in He/CH4 selectivity when this aluminophosphate (8MR-AlPO) was dispersed in a fluorinated polyimide. The increase in selectivity was explained as size sieving by the aluminophosphate sheets where small gas species can pass through the microstructure and large gas species have to take a tortuous path around the sheets.
We performed several studies with different polymer materials in the attempt to make composite
membranes that corroborated the previously seen increases in gas selectivity. In some cases different surfactants were used to swell 8MR-AlPO. In the first set of studies the methods used to produce the fluorinated polyimide composites were repeated using polydimethyl siloxane (PDMS), a copolymer of a fluorinated polyimide and PDMS, polysulfone, Matrimid, and cellulose acetate as the
matrix materials. In general gas permeation studies of these materials showed an overall decrease in permeability with increasing addition of 8MR-AlPO but no substantial increase in selectivity. In an attempt to increase the chances of exfoliating and dispersing the layered aluminophosphate, an in-situ method using poly(etherimide) (PEI) was polymerized in the presence of 8MR-AlPO was employed.
Mixed matrix membranes of PEI with 5wt% 8MR-AlPO were successfully fabricated and the transport properties measured. Microscopy revealed that the composites made with the 8MR-AlPO treated with a reactive surfactant showed better dispersion than those treated with the nonreactive surfactants. The permeability of gases changed very little as the result of adding 8MR-AlPO to PEI and no substantial increase in selectivity was observed. Finally, we incorporated a similar layered aluminophosphate with larger 12MR (6-7Ã ) openings into polysulfone. These composites showed barrier behavior but no increases in selectivity.
Advisors/Committee Members: Marand, Eva (committeechair), Koros, William (committee member), Davis, Richey M. (committee member), Oyama, Shigeo Ted (committee member).
Subjects/Keywords: layered aluminophosphates; mixed matrix membranes; gas separations
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APA ·
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APA (6th Edition):
Vaughan, B. R. (2007). Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26908
Chicago Manual of Style (16th Edition):
Vaughan, Benjamin Ray. “Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations.” 2007. Doctoral Dissertation, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/26908.
MLA Handbook (7th Edition):
Vaughan, Benjamin Ray. “Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations.” 2007. Web. 16 Jan 2021.
Vancouver:
Vaughan BR. Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations. [Internet] [Doctoral dissertation]. Virginia Tech; 2007. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/26908.
Council of Science Editors:
Vaughan BR. Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations. [Doctoral Dissertation]. Virginia Tech; 2007. Available from: http://hdl.handle.net/10919/26908
University of Manchester
16.
Khdhayyer, Muhanned Radhi.
Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations.
Degree: 2017, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308052
► This research aimed to develop new composite membranes using a polymer of intrinsic microporosity (PIM-1) and metal organic frameworks (MOFs) for use in gas separations.…
(more)
▼ This research aimed to develop new composite
membranes using a polymer of intrinsic microporosity (PIM-1) and
metal organic frameworks (MOFs) for use in gas separations. PIM-1
was successfully synthesised using the high temperature method (40
min, 160 °C) and the resulting polymer was cast into
membranes.
PIM-1
membranes were chemically modified by reacting
hexamethylenediamine (HMDA) with the nitrile group of PIM-1 to form
HMDA-modified PIM-1
membranes. Surfaces of PIM-1
membranes were
also modified by basic hydrolysis to form amide-modified PIM-1
membranes. These polymer materials were characterized by different
techniques (GPC, NMR, ATR-IR, TGA, Elemental analysis and nitrogen
sorption analysis). In addition, eight MOF materials [MIL-101(Cr),
ED-g-MIL-101(Cr), TEPA-g-MIL-101(Cr), MIL-101(Cr)-NH2,
MIL-101(Al)-NH2, UiO-66(Zr), UiO-66-NH2 and UiO-66(COOH)2] were
successfully synthesized. They were chosen due to having high
surface areas and large porosity. These MOF compounds were
characterized using PXRD, SEM, TGA, and low pressure N2.Successful
PIM-1/MOF MMMs were fabricated utilising PIM-1 and the MOFs
outlined above with various loadings. The highest MOF loading
achieved was 28.6 wt. %, apart from MIL-101(Cr)-NH2, for which it
was 23.1 wt. %, and MIL-101(Al)-NH2, for which it was 19.8 wt. %.
The morphology of MMMs was characterized by scanning electron
microscopy (SEM), proving the dispersion of MOF fillers. Novel
PIM-1 supported MOF
membranes were successfully prepared by
depositing ZIF-8 and HKUST-1 layers on the surfaces of unmodified
and modified PIM-1
membranes. These materials were characterized
using PXRD, SEM, ATR-IR and SEM-EDX. Gas permeation properties of
the MOF/PIM-1 MMMs and PIM-1 supported MOF
membranes were
determined using a time lag method. Most MMMs tested showed an
increase in the permeability and stable selectivity as the MOF
amount was increased. However, this was not true for
MIL-101(Al)-NH2, where the permeability and selectivity decreased.
In contrast, PIM-1 supported ZIF-8 and HKUST-1
membranes caused a
sharp decrease in the permeability and increase in the
selectivity.
Advisors/Committee Members: ATTFIELD, MARTIN MP, Attfield, Martin, Budd, Peter.
Subjects/Keywords: Polymer; membrane; gas separation; metal organic
frameworks MOFs; mixed matrix membranes MMMs and sandwich structure
composite membrane
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Khdhayyer, M. R. (2017). Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308052
Chicago Manual of Style (16th Edition):
Khdhayyer, Muhanned Radhi. “Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations.” 2017. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308052.
MLA Handbook (7th Edition):
Khdhayyer, Muhanned Radhi. “Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations.” 2017. Web. 16 Jan 2021.
Vancouver:
Khdhayyer MR. Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2021 Jan 16].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308052.
Council of Science Editors:
Khdhayyer MR. Mixed Matrix Membranes Comprising Metal Organic
Frameworks and High Free Volume Polymers for Gas
Separations. [Doctoral Dissertation]. University of Manchester; 2017. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308052
Universidade Nova
17.
Mateus, Sara Alexandra Anacleto.
From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies.
Degree: 2017, Universidade Nova
URL: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/25627
► Wastes with high organic content, such as food waste, are produced worldwide and can cause serious pollution problems when poorly managed. Thus, there is the…
(more)
▼ Wastes with high organic content, such as food waste, are produced worldwide and can cause serious pollution problems when poorly managed. Thus, there is the need for the implementation of environmental friendly treatment systems for organic wastes. Anaerobic digestion has the potential to contribute for the sustainable treatment of these wastes while producing biogas which provides a renewable energy source, methane (CH4).
In this study, a two-stage anaerobic system was operated treating three different fruit pulp wastes (peach, raspberry and white guava) in a sequential operation. The effect of substrate shifts and different operational conditions, such as hydraulic retention time (HRT), organic loading rate (OLR) and pH on the system’s performance was assessed. The shift of substrates caused no long-term instability issues. The differences observed in the acidogenic performance in terms of gas production between substrates were considerable. Conversely, only slight differences were observed in fermentation products (FP) concentration and profiles. No evident association was found between pH and HRT/OLR changes on FP concentration and profiles in the range studied. Overall, the sugar removal efficiencies obtained were between 93.8 – 97.8% and the acidification degree varied between 53.7% – 76.4%. In regard to the methanogenic reactor, biogas production (3.6 – 12.8 L d-1) increased as OLR increased up to 7.4 g COD L-1, while CH4 yield (0.30 – 0.37 L CH4 g-1 COD) and content (75.9– 80.6%) remained approximately constant. Maximal chemical oxygen demand (COD) removal
efficiency (around 93%) was achieved at HRTs of 8.6 and 5 days (OLR of 1.9 – 3.7 g COD L-1 d-1).
Currently, there is the need to develop effective and economical viable solutions for biogas upgrading.
Thus, gas permeation studies using
mixed-
matrix membranes (MMMs) with two different metal organic frameworks (MOFs) - MIL-53 and MOF-5 - were carried out in other to assess the potential for CH4 and carbon dioxide (CO2) separation. Matrimid®5218 with 10% (w/w) MIL-53 membrane showed the best performance among the
membranes tested.
Advisors/Committee Members: Cassidy, Joana, Carvalheira, Mónica.
Subjects/Keywords: two-stage anaerobic digestion system; fruit pulp wastes; substrate shifts; biomethane; biogas upgrading; mixed-matrix membranes; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Química
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mateus, S. A. A. (2017). From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies. (Thesis). Universidade Nova. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/25627
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mateus, Sara Alexandra Anacleto. “From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies.” 2017. Thesis, Universidade Nova. Accessed January 16, 2021.
https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/25627.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mateus, Sara Alexandra Anacleto. “From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies.” 2017. Web. 16 Jan 2021.
Vancouver:
Mateus SAA. From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies. [Internet] [Thesis]. Universidade Nova; 2017. [cited 2021 Jan 16].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/25627.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mateus SAA. From fruit pulp wastes to biomethane: assessment of substrate shifts on the performance of a two-stage anaerobic system and biogas upgrading studies. [Thesis]. Universidade Nova; 2017. Available from: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/25627
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
18.
Dawood, Bann.
Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation.
Degree: PhD, 2017, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/mixed-matrix-membranes-consisting-of-porous-polyimide-networks-and-polymers-of-intrinsic-microporosity-for-gas-separation(bb07d633-69dc-471b-a5ae-f1f0888615b6).html
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728249
► This research aimed to develop the fabrication of mixed matrix membranes (MMMs) utilizing a polymer of intrinsic microporosity (PIM-1) with porous polyimide networks, and to…
(more)
▼ This research aimed to develop the fabrication of mixed matrix membranes (MMMs) utilizing a polymer of intrinsic microporosity (PIM-1) with porous polyimide networks, and to explore their effect on gas transport properties. PIM-1 has been chosen as polymer matrix for its high surface area and high sorption of gases. It is also considered as interesting candidate for membrane gas separation. PIM-1 has been synthesized successfully using high temperature methods (40 min, 160 °C) and low temperature methods (72 h, 65 °C). Porous polyimide networks have been chosen as organic fillers as they have good chemical affinity to polymer matrix and can adhere much better than inorganic fillers. MPN-1 and MPN-2 were synthesized by condensation polymerization of A2 (dianhydride) and B4 (tetraamino). The polymer matrix (PIM-1) and network polyimide fillers were characterized using various characterization techniques, including FTIR, NMR spectroscopy, TGA and N2 sorption analysis. MMMs were fabricated successfully utilizing PIM-1 with 10, 20, and 30wt. % loadings of fillers. The MMMs prepared were homogenous on a macroscale. They characterized using different techniques, such as FTIR spectroscopy, powder x-ray diffraction, and scanning electron microscopy. The gas transport properties of MMMs were obtained using a time lag method. The treatment of MMMs with alcohol showed an increase in the permeability and diffusivity of gases. We aimed in this research to increase solubility of microporous polyimide network (MPN-1) by decreasing the extent of network structure. Different strategies have been utilized. First, using different molar ratios and second, using end-capping modification. The polymers were characterized using various techniques, including FTIR, NMR spectroscopy and TGA. Following this, their CO2 uptake and solubility are also examined.
Subjects/Keywords: 668.9; Network Polyimides; Mixed matrix membranes; Hyperbranched polyimides
…mixed matrix membranes… …Pure and Applied Chemistry
Methanol
Mixed Matrix Membranes
Number Average Molecular Weight… …Abstract
The University of Manchester
Bann Dawood
Doctor of Philosophy
Mixed Matrix Membranes… …2016
This research aimed to develop the fabrication of mixed matrix membranes (MMMs)… …PIM-1/PNPs mixed matrix
membranes with various loadings of the fillers. (Chapter 4)…
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APA ·
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MLA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dawood, B. (2017). Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/mixed-matrix-membranes-consisting-of-porous-polyimide-networks-and-polymers-of-intrinsic-microporosity-for-gas-separation(bb07d633-69dc-471b-a5ae-f1f0888615b6).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728249
Chicago Manual of Style (16th Edition):
Dawood, Bann. “Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation.” 2017. Doctoral Dissertation, University of Manchester. Accessed January 16, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/mixed-matrix-membranes-consisting-of-porous-polyimide-networks-and-polymers-of-intrinsic-microporosity-for-gas-separation(bb07d633-69dc-471b-a5ae-f1f0888615b6).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728249.
MLA Handbook (7th Edition):
Dawood, Bann. “Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation.” 2017. Web. 16 Jan 2021.
Vancouver:
Dawood B. Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2021 Jan 16].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/mixed-matrix-membranes-consisting-of-porous-polyimide-networks-and-polymers-of-intrinsic-microporosity-for-gas-separation(bb07d633-69dc-471b-a5ae-f1f0888615b6).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728249.
Council of Science Editors:
Dawood B. Mixed matrix membranes consisting of porous polyimide networks and polymers of intrinsic microporosity for gas separation. [Doctoral Dissertation]. University of Manchester; 2017. Available from: https://www.research.manchester.ac.uk/portal/en/theses/mixed-matrix-membranes-consisting-of-porous-polyimide-networks-and-polymers-of-intrinsic-microporosity-for-gas-separation(bb07d633-69dc-471b-a5ae-f1f0888615b6).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728249
19.
YANG TINGXU.
Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification.
Degree: 2012, National University of Singapore
URL: http://scholarbank.nus.edu.sg/handle/10635/37463
Subjects/Keywords: Hydrogen purification; Mixed matrix membranes; Polybenzimidazole; Zeolitic imidazolate frameworks; Hollow fibers
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APA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
TINGXU, Y. (2012). Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/37463
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
TINGXU, YANG. “Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification.” 2012. Thesis, National University of Singapore. Accessed January 16, 2021.
http://scholarbank.nus.edu.sg/handle/10635/37463.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
TINGXU, YANG. “Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification.” 2012. Web. 16 Jan 2021.
Vancouver:
TINGXU Y. Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification. [Internet] [Thesis]. National University of Singapore; 2012. [cited 2021 Jan 16].
Available from: http://scholarbank.nus.edu.sg/handle/10635/37463.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
TINGXU Y. Zeolitic Imidazolate Frameworks / Polybenzimidazole Nanocomposite Membranes for Hydrogen Purification. [Thesis]. National University of Singapore; 2012. Available from: http://scholarbank.nus.edu.sg/handle/10635/37463
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
20.
XU YIMING.
DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS.
Degree: 2017, National University of Singapore
URL: http://scholarbank.nus.edu.sg/handle/10635/138200
Subjects/Keywords: Pervaporation dehydration; Mixed matrix membranes; UiO-66; polyimide; Thermal rearrangement; Polyethersulfone
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APA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
YIMING, X. (2017). DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/138200
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
YIMING, XU. “DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS.” 2017. Thesis, National University of Singapore. Accessed January 16, 2021.
http://scholarbank.nus.edu.sg/handle/10635/138200.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
YIMING, XU. “DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS.” 2017. Web. 16 Jan 2021.
Vancouver:
YIMING X. DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS. [Internet] [Thesis]. National University of Singapore; 2017. [cited 2021 Jan 16].
Available from: http://scholarbank.nus.edu.sg/handle/10635/138200.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
YIMING X. DESIGN AND DEVELOPMENT OF PERVAPORATION MEMBRANES FOR DEHYDRATION OF ALCOHOLS. [Thesis]. National University of Singapore; 2017. Available from: http://scholarbank.nus.edu.sg/handle/10635/138200
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Esekhile, Omoyemen Edoamen.
Mixed matrix membranes for mixture gas separation of butane isomers.
Degree: PhD, Chemical Engineering, 2011, Georgia Tech
URL: http://hdl.handle.net/1853/42929
► The goal of this project was to understand and model the performance of hybrid inorganic-organic membranes under realistic operating conditions for hydrocarbon gas/vapor separation, using…
(more)
▼ The goal of this project was to understand and model the performance of hybrid inorganic-organic
membranes under realistic operating conditions for hydrocarbon gas/vapor separation, using butane isomers as the model vapors and a hybrid membrane of 6FDA-DAM-5A as an advanced separation system.
To achieve the set goal, three objectives were laid out. The first objective was to determine the factors affecting separation performance in dense neat polymer. One main concern was plasticization. High temperature annealing has been reported as an effect means of suppressing plasticization. A study on the effect of annealing temperature was performed by analyzing data acquired via sorption and permeation measurements. Based on the findings from this study, a suitable annealing temperature was determined. Another factor studied was the effect of operating temperature. In deciding a suitable operating temperature, factors such as its possible effect on plasticization as well as reducing heating/cooling cost in industrial application were considered.
Based on the knowledge that industrial applications of this membrane would involve mixture separation, the second objective was to understand and model the complexity of a
mixed gas system. This was investigated via permeation measurements using three feed compositions. An interesting transport behavior was observed in the
mixed gas system, which to the best of our knowledge, has not been observed in other
mixed gas systems involving smaller penetrants. This
mixed gas transport behavior presented a challenge in predictability using well-established transport models. Two hypotheses were made to explain the observed transport behavior, which led to the development of a new model termed the HHF model and the introduction of a fitting parameter termed the CAUFFV fit. Both the HHF model and CAUFFV fit showed better agreement with experimental data than the well-established
mixed gas transport model.
The final objective was to explore the use of
mixed matrix membranes as a means of improving the separation performance of this system. A major challenge with the fabrication of good
mixed matrix membranes was the adhesion of the zeolite particle with the polymer. This was addressed via sieve surface modification through a Grignard treatment process. Although a Grignard treatment procedure existed, there was a challenge of reproducibility of the treatment. This challenge was addressed by exploring the relationship between the sieves and the solvent used in the treatment, and taking advantage of this relationship in the Grignard treatment process. This study helped identify a suitable solvent, which allowed for successful and reproducible treatment of commercial LTA sieves; however, treatment of lab-made sieves continues to prove challenging. Based on improved understanding of the Grignard treatment reaction mechanism, modifications were made to the existing Grignard treatment procedure, resulting in the introduction of a "simplified" Grignard treatment procedure. The new procedure…
Advisors/Committee Members: Dr. William Koros (Committee Chair), Dr. Amyn Teja (Committee Member), Dr. Carson Meredith (Committee Member), Dr. Karl Jacob (Committee Member), Dr. Victor Breedveld (Committee Member).
Subjects/Keywords: Mixed matrix membranes; Mixed gas permeation; Butane isomers; Gases Separation; Gas separation membranes; Membranes (Technology); Separation (Technology)
…4
FIGURE 1.3: MIXED MATRIX MEMBRANES OF ZEOLITE 4A AND UDEL FOR O2/N2
SEPARATION [4… …with the
fabrication of good mixed matrix membranes was the adhesion of the zeolite particle… …application.
Permeation measurements were made using mixed matrix membranes in both
single and mixed… …mechanism of gas through membranes [1]
1.2. MIXED MATRIX MEMBRANES FOR GAS SEPARATION… …Mixed matrix membranes comprise
highly selective molecular sieves as the dispersed phase with…
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APA (6th Edition):
Esekhile, O. E. (2011). Mixed matrix membranes for mixture gas separation of butane isomers. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42929
Chicago Manual of Style (16th Edition):
Esekhile, Omoyemen Edoamen. “Mixed matrix membranes for mixture gas separation of butane isomers.” 2011. Doctoral Dissertation, Georgia Tech. Accessed January 16, 2021.
http://hdl.handle.net/1853/42929.
MLA Handbook (7th Edition):
Esekhile, Omoyemen Edoamen. “Mixed matrix membranes for mixture gas separation of butane isomers.” 2011. Web. 16 Jan 2021.
Vancouver:
Esekhile OE. Mixed matrix membranes for mixture gas separation of butane isomers. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1853/42929.
Council of Science Editors:
Esekhile OE. Mixed matrix membranes for mixture gas separation of butane isomers. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/42929
22.
Χουρδάκης, Νικόλαος.
Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων.
Degree: 2010, University of Patras
URL: http://nemertes.lis.upatras.gr/jspui/handle/10889/3978
► Η παρούσα διδακτορική διατριβή αποτελείται από δύο ξεχωριστές ενότητες οι οποίες έχουν σαν στόχο τη μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής…
(more)
▼ Η παρούσα διδακτορική διατριβή αποτελείται από δύο ξεχωριστές ενότητες οι οποίες έχουν σαν στόχο τη μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και σε εφαρμογές διαχωρισμού αερίων.
Στην πρώτη ενότητα έγινε εκτίμηση του μοριακού προσανατολισμού μονοαξονικά εφελκυσμένων πολυμερικών μεμβρανών Nafion-115 με τη βοήθεια πολωμένων φασμάτων UV-Raman. Πειράματα δυναμικής μηχανικής ανάλυσης επαλήθευσαν τις προσδοκίες για βελτίωση των μηχανικών ιδιοτήτων του πολυμερικού ηλεκτρολύτη κατά μήκος της διεύθυνσης εφελκυσμού. Η θερμική ανάλυση των δειγμάτων με τις τεχνικές της διαφορικής θερμιδομετρίας σάρωσης και της θερμοσταθμικής ανάλυσης δεν έδειξε κάποια ιδιαίτερη διαφοροποίηση μεταξύ εφελκυσμένων και μη δοκιμίων Nafion-115, πέραν της βελτίωσης της ικανότητας των τανυσμένων μεμβρανών να συγκρατούν το όποιο νερό υπάρχει στο ιονομερές. Μικρή ήταν η αύξηση της ιοντικής αγωγιμότητας που παρατηρήθηκε στα τανυσμένα δείγματα κατά μήκος της διεύθυνσης εφελκυσμού.
Η προσπάθεια τροποποίησης του Nafion® με διαξονικό εφελκυσμό είχε σαν αποτέλεσμα τη λήψη λεπτών πολυμερικών ηλεκτρολυτικών μεμβρανών με αποτελεσματικότερες ιδιότητες στην τάση διέλευσης της μεθανόλης, σε σχέση με τις μη τροποποιημένες μεμβράνες. Επιπρόσθετα, με τον ελεγχόμενο διαξονικό και σταθερού πλάτους μονοαξονικό εφελκυσμό κατέστη δυνατό να επιτευχθεί η εξισορρόπηση των ποσοστών διαστολής κατά το μήκος και πλάτος της επιφάνειας του Nafion, μετά τον εμποτισμό του με νερό.
Όσον αφορά στην τροποποίηση του Nafion με εναπόθεση στοιβάδας αγώγιμου πολυμερούς πολυανιλίνης (PAni) ή πολυπυρρόλης (PPy) με ενσωματωμένα αντισταθμιστικά ιόντα SO42- ή Nafion-, η φασματοσκοπική μελέτη, μέσω ATR-FTIR, σε συνδυασμό με τις μικροφωτογραφίες SEM που ελήφθησαν, οδήγησαν στα εξής συμπεράσματα: Για τις σύνθετες μεμβράνες Nafion/PAni που παρασκευάστηκαν με την τεχνική της διάχυσης, από τη μία ελήφθησαν δείγματα με ικανοποιητική συνάφεια μεταξύ του κυρίως όγκου της πολυμερικής μεμβράνης Nafion και της PAni, από την άλλη όμως, υπάρχει και κάποιο ποσοστό μονομερούς ανιλίνης (Ani) που εγκλωβίζεται στο εσωτερικό του Nafion, και μάλιστα σε σημαντικό βαθμό, που εξαρτάται από το χρόνο σύνθεσης. Αντίθετα, οι αντίστοιχες μελέτες στις μεμβράνες Nafion/PPy δε φανερώνουν την ύπαρξη διείσδυσης της PPy ή του μονομερούς στην κύρια μάζα του Nafion, ή τουλάχιστον όχι σε τέτοιο βαθμό που να μπορεί να ανιχνευθεί μέσω της τεχνικής που χρησιμοποιήθηκε. Ιδιαίτερο είναι το ενδιαφέρον που προκύπτει από τις φασματοσκοπικές μετρήσεις στην πλευρά του σύνθετου πολυμερούς όπου εναποτίθετο το πολυμερισμένο αγώγιμο υλικό, καθώς με το χρόνο σύνθεσης παρατηρούνται μετατοπίσεις κορυφών του Nafion προς χαμηλότερες συχνότητες, υποδεικνύοντας ενδεχόμενη αλληλεπίδραση με το αγώγιμο πολυμερές.
Στη δεύτερη ενότητα μελετήθηκαν οι σύνθετες (ή “
mixed matrix”) πολυμερικές μεμβράνες πολυσουλφόνης (PSF) με ενσωματωμένες φυλλώδεις αργυλοφωσφορικές νανονιφάδες τύπου AlPO. Αρχικά πραγματοποιήθηκε η σύνθεση των νανονιφάδων AlPO. Με στόχο τη βελτίωση της συμβατότητάς τους με την πολυμερική μήτρα…
Advisors/Committee Members: Βογιατζής, Γεώργιος, Chourdakis, Nikolaos, Βογιατζής, Γεώργιος, Καλλίτσης, Ιωάννης, Στάικος, Γεώργιος, Μπόκιας, Γεώργιος, Αναστασιάδης, Σπυρίδων, Κουτσούκος, Πέτρος, Νικολάκης, Βλαδίμηρος.
Subjects/Keywords: Πολυμερικές μεμβράνες; Κυψελίδες καυσίμου; Εφελκυσμός; Μοριακός προσανατολισμός; Διαχωρισμός αερίων; Αγώγιμα πολυμερή; Σύνθετες πολυμερικές μεμβράνες; Διαπερατότητα; Νάφιον; Πολυσουλφόνη; 621.312 429; Polymer membranes; Fuel cells; Stretching; Molecular orientation; Gas separation; Conductive polymers; Mixed matrix membranes; Permeability; Nafion; Polysulfone
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APA ·
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APA (6th Edition):
Χουρδάκης, . (2010). Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων. (Doctoral Dissertation). University of Patras. Retrieved from http://nemertes.lis.upatras.gr/jspui/handle/10889/3978
Chicago Manual of Style (16th Edition):
Χουρδάκης, Νικόλαος. “Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων.” 2010. Doctoral Dissertation, University of Patras. Accessed January 16, 2021.
http://nemertes.lis.upatras.gr/jspui/handle/10889/3978.
MLA Handbook (7th Edition):
Χουρδάκης, Νικόλαος. “Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων.” 2010. Web. 16 Jan 2021.
Vancouver:
Χουρδάκης . Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων. [Internet] [Doctoral dissertation]. University of Patras; 2010. [cited 2021 Jan 16].
Available from: http://nemertes.lis.upatras.gr/jspui/handle/10889/3978.
Council of Science Editors:
Χουρδάκης . Μελέτη τροποποιημένων πολυμερικών μεμβρανών για χρήση σε κυψελίδες καυσίμου αγωγής πρωτονίων και εφαρμογές διαχωρισμού αερίων. [Doctoral Dissertation]. University of Patras; 2010. Available from: http://nemertes.lis.upatras.gr/jspui/handle/10889/3978
23.
NATALIA WIDJOJO.
Fundamental study of composite hollow fiber membranes for gas separation.
Degree: 2009, National University of Singapore
URL: https://scholarbank.nus.edu.sg/handle/10635/161043
Subjects/Keywords: dual-layer hollow fiber membranes; gas separation; macrovoids; spinneret design; aluminium oxide particles; mixed matrix membranes
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
WIDJOJO, N. (2009). Fundamental study of composite hollow fiber membranes for gas separation. (Thesis). National University of Singapore. Retrieved from https://scholarbank.nus.edu.sg/handle/10635/161043
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
WIDJOJO, NATALIA. “Fundamental study of composite hollow fiber membranes for gas separation.” 2009. Thesis, National University of Singapore. Accessed January 16, 2021.
https://scholarbank.nus.edu.sg/handle/10635/161043.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
WIDJOJO, NATALIA. “Fundamental study of composite hollow fiber membranes for gas separation.” 2009. Web. 16 Jan 2021.
Vancouver:
WIDJOJO N. Fundamental study of composite hollow fiber membranes for gas separation. [Internet] [Thesis]. National University of Singapore; 2009. [cited 2021 Jan 16].
Available from: https://scholarbank.nus.edu.sg/handle/10635/161043.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
WIDJOJO N. Fundamental study of composite hollow fiber membranes for gas separation. [Thesis]. National University of Singapore; 2009. Available from: https://scholarbank.nus.edu.sg/handle/10635/161043
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
24.
Flynn, Eoin J.
Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics.
Degree: 2013, University College Cork
URL: http://hdl.handle.net/10468/1288
► The work in this thesis concerns the advanced development of polymeric membranes of two types; pervaporation and lateral-flow. The former produced from a solution casting…
(more)
▼ The work in this thesis concerns the advanced development of polymeric
membranes of two types; pervaporation and lateral-flow. The former produced from a solution casting method and the latter from a phase separation. All
membranes were produced from casting lacquers. Early research centred on the development of viable
membranes. This led to a supported polymer blend pervaporation membrane. Selective layer: plasticized 4:1 mass ratio sodium-alginate: poly(vinyl-alcohol) polymer blend. Using this membrane, pervaporation separation of ethanol/water mixtures was carefully monitored as a function of film thickness and time. Contrary to literature expectations, these films showed increased selectivity and decreased flux as film thickness was reduced. It is argued that morphology and structure of the polymer blend changes with thickness and that these changes define membrane efficiency.
Mixed matrix membrane development was done using spherical, discreet, size-monodisperse mesoporous silica particles of 1.8 - 2μm diameter, with pore diameters of ~1.8 nm were incorporated into a poly(vinyl alcohol) [PVA]
matrix. Inclusion of silica benefitted pervaporation performance for the dehydration of ethanol, improving flux and selectivity throughout in all but the highest silica content samples. Early lateral-flow membrane research produced a membrane from a basic lacquer composition required for phase inversion; polymer, solvent and non-solvent. Results showed that bringing lacquers to cloud point benefits both the pore structure and skin layers of the
membranes. Advancement of this work showed that incorporation of ethanol as a mesosolvent into the lacquer effectively enhances membrane pore structure resulting in an improvement in lateral flow rates of the final
membranes. This project details the formation mechanics of pervaporation and lateral-flow
membranes and how these can be controlled. The principle methods of control can be applied to the formation of any other flat sheet polymer
membranes, opening many avenues of future membrane research and industrial application.
Advisors/Committee Members: Morris, Michael A..
Subjects/Keywords: Pervaporation; Ethanol-dehydration; Sodium-alginate; Mesoporous silica; Skin-layer; Lateral-flow; Mixed matrix membranes; Cellulose-nitrate; Mesoporous materials; Membranes (Technology)
…175
7 Pervaporation Mixed Matrix Membranes… …ThermoGravimetric Analysis
MMM – Mixed Matrix Membrane
TIPS – Thermally Induced Phase
NaAlg… …matrix membranes for
dehydration of ethanol by pervaporation
Donal A. Keane, Eoin J. Flynn… …that these changes define membrane efficiency.
Mixed matrix membrane development was done… …209
6
A.4 Blend Membranes Utilising Glycerol Data…
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APA ·
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APA (6th Edition):
Flynn, E. J. (2013). Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics. (Thesis). University College Cork. Retrieved from http://hdl.handle.net/10468/1288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Flynn, Eoin J. “Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics.” 2013. Thesis, University College Cork. Accessed January 16, 2021.
http://hdl.handle.net/10468/1288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Flynn, Eoin J. “Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics.” 2013. Web. 16 Jan 2021.
Vancouver:
Flynn EJ. Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics. [Internet] [Thesis]. University College Cork; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10468/1288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Flynn EJ. Advanced polymer membrane development in pervaporation dehydration and lateral flow diagnostics. [Thesis]. University College Cork; 2013. Available from: http://hdl.handle.net/10468/1288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Georgia Tech
25.
Liu, Junqiang.
Development of next generation mixed matrix hollow fiber membranes for butane isomer separation.
Degree: PhD, Chemical Engineering, 2010, Georgia Tech
URL: http://hdl.handle.net/1853/42807
► Mixed matrix hollow fiber membranes maintain the ease of processing polymers while enhancing the separation performance of the pure polymer due to inclusion of molecular…
(more)
▼ Mixed matrix hollow fiber
membranes maintain the ease of processing polymers while enhancing the separation performance of the pure polymer due to inclusion of molecular sieve filler particles. This work shows the development process of high loading
mixed matrix hollow fiber
membranes for butane isomer separation, from material selection and engineering of polymer-sieve interfacial adhesion to
mixed matrix hollow fiber spinning.
The matching of gas transport properties in polymer and zeolite is critical for forming successful
mixed matrix membranes. The nC4 permeability in glassy commercial polymers such as Ultem® and Matrimid® is too low (< 0.1 Barrer) for commercial application. A group of fluorinated (6FDA) polyimides, with high nC4 permeability and nC4/iC4 selectivity, are selected as the polymer
matrix. No glassy polymers can possibly match the high permeable MFI to make
mixed matrix membranes with selectivity enhancement for C4s separation. Zeolite 5A, which has a nC4 permeability (~3 Barrer) and nC4/iC4 selectivity (essentially ∞), matches well with the 6FDA polymers. A 24% nC4/iC4 selectivity enhancement was achieved in
mixed matrix membranes containing 6FDA-DAM and 25 wt% treated 5A particles. A more promising
mixed matrix membrane contains 6FDA-DAM-DABA
matrix and 5A, because of a better match of gas transport properties in polymer and zeolite.
Dual layer hollow fibers, with cellulose acetate core layer and sheath layers of 6FDA polyimides, were successfully fabricated. Successive engineering of the 6FDA sheath layer and the dense skin is needed for the challenging C4s separation, which is extremely sensitive to the integrity of the dense skin layer. The delamination-free, macrovoid-free dual layer hollow fiber
membranes provide the solution for the expensive 6FDA polyimides spinning.
Mixed matrix hollow fiber
membranes are spun base on the platform of 6FDA/Cellulose acetate dual layer hollow fibers. Preliminary results suggest that high loading
mixed matrix hollow fiber
membranes for C4s is feasible. Following research is needed on the fiber spinning with well treated zeolite 5A nanoparticles.
The key aspect of this research is elucidating the three-step (sol-gel-precipitation) mechanism of sol-gel-Grignard treatment, based on which further controlling of Mg(OH)2 whisker morphologies is possible. A Mg(OH)2 nucleation process promoted by acid species is proposed to explain the heterogeneous Mg(OH)2 growing process. Different acid species were tried: 1) HCl solution, 2) AlClx species generated by dealumination process and 3) AlCl3 supported on zeolite surfaces. Acids introduced through HCl solution and dealumination are effective on commercial 5A particles to generate Mg(OH)2 whiskers in the sol-gel-Grignard treatment. Supported AlCl3 is effective on both commercial and synthesized 5A particles (150 nm-1 µm) during the sol-gel-Grignard treatment, in terms of promoting heterogeneous Mg(OH)2 whiskers formation. But the byproduct of Al(OH)3 layer separates the Mg(OH)2 whiskers from zeolite surface, and…
Advisors/Committee Members: William J. Koros (Committee Chair), Carson Meredith (Committee Member), Christopher W. Jones (Committee Member), Ronald R. Chance (Committee Member), Sankar Nair (Committee Member), Victor Breedveld (Committee Member).
Subjects/Keywords: Butane isomer separation; Mixed matrix membrane; Hollow fiber membrane; Membrane separation; Gas separation membranes; Gases Separation; Separation (Technology); Membranes (Technology); Zeolites; Polymers
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APA ·
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APA (6th Edition):
Liu, J. (2010). Development of next generation mixed matrix hollow fiber membranes for butane isomer separation. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42807
Chicago Manual of Style (16th Edition):
Liu, Junqiang. “Development of next generation mixed matrix hollow fiber membranes for butane isomer separation.” 2010. Doctoral Dissertation, Georgia Tech. Accessed January 16, 2021.
http://hdl.handle.net/1853/42807.
MLA Handbook (7th Edition):
Liu, Junqiang. “Development of next generation mixed matrix hollow fiber membranes for butane isomer separation.” 2010. Web. 16 Jan 2021.
Vancouver:
Liu J. Development of next generation mixed matrix hollow fiber membranes for butane isomer separation. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1853/42807.
Council of Science Editors:
Liu J. Development of next generation mixed matrix hollow fiber membranes for butane isomer separation. [Doctoral Dissertation]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/42807
26.
Lydon, Megan Elizabeth.
Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes.
Degree: PhD, Chemistry and Biochemistry, 2013, Georgia Tech
URL: http://hdl.handle.net/1853/49069
► Mixed matrix membranes (MMMs) consisting of a polymer bulk phase and an inorganic dispersed phase have the potential to provide a more selective membrane because…
(more)
▼ Mixed matrix membranes (MMMs) consisting of a polymer bulk phase and an inorganic dispersed phase have the potential to provide a more selective membrane because they incorporate the selectivity of a zeolite dispersed phase while maintaining the ease of use of a polymer membrane. A critical problem in MMM applications is control over the polymer-zeolite interface adhesion during fabrication which can detrimentally impact membrane performance. In this work, MgOxHy (1≤x≤2, 0≤y≤2) nanostructures have been grown on pure-silica MFI and aluminosilicate LTA zeolites through four surface deposition techniques: Grignard decomposition reactions, solvothermal and modified solvothermal depositions, and ion-exchange induced surface crystallization. The structural properties of the surface nanostructures produced by each of the four methods were thoroughly characterized for their morphology, crystallinity, porosity, surface area, elemental composition, and these properties were used to predict the method’s suitability for use in composite
membranes. The nanostructured zeolites were used in
mixed matrix membranes (MMMs) at two MMMs weight loadings. The dispersion, mechanical properties, and CO₂/CH₄ gas separation properties were measured MMMs made with each method of functionalized LTA. All functionalization methods improve adhesion with the polymer observable by microscopy, the dispersion of particles, and the elastic modulus and hardness of the membrane. Gas permeation measurements prove the quality and effectiveness of the Ion Exchange membrane for CO₂/CH₄ separation by its significant increase in selectivity over the pure polymer. Lastly, the interface between the two materials was studied by probing the interfacial polymer mobility using NMR spin-spin relaxation measurements and mechanical mapping of membrane cross sections. It was shown that the nanostructures have both steric and chemical interactions with the polymer. Mapping of the elastic modulus indicated that functionalization methods that resulted in poorer zeolite coverage also disrupted the mechanical properties of the membrane at the interface of the materials. The investigations in this thesis provide detailed structure-property relationships of surface-modified molecular sieves and nanocomposite
membranes fabricated using these materials, allowing a rational approach to the design of such materials and
membranes.
Advisors/Committee Members: Jones, Christopher W. (advisor), Nair, Sankar (advisor), Zhang, Z. John. (committee member), Wilkinson, Angus (committee member), El-Sayed, Mostafa A. (committee member).
Subjects/Keywords: Mixed matrix membrane; Zeolites; Surface modification; Composite; Nanocomposites (Materials); Polyimides; Zeolites; Gas separation membranes; Membranes (Technology); Separation (Technology)
…Matrimid® polymer and Matrimid® mixed matrix membranes with B) bare LTA, C) ion… …XRD – X-ray diffraction
xviii
Summary
Mixed matrix membranes (MMMs) are an… …1.2.4
Mixed Matrix Membranes
Although polymeric membranes have formed the mainstay of… …higherperformance alternative.[6] Specifically, mixed matrix membranes (MMMs) are… …LTA – zeolite 4A
MMM – mixed matrix membrane
NMR – nuclear magnetic resonance
PdI…
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APA (6th Edition):
Lydon, M. E. (2013). Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/49069
Chicago Manual of Style (16th Edition):
Lydon, Megan Elizabeth. “Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes.” 2013. Doctoral Dissertation, Georgia Tech. Accessed January 16, 2021.
http://hdl.handle.net/1853/49069.
MLA Handbook (7th Edition):
Lydon, Megan Elizabeth. “Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes.” 2013. Web. 16 Jan 2021.
Vancouver:
Lydon ME. Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes. [Internet] [Doctoral dissertation]. Georgia Tech; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1853/49069.
Council of Science Editors:
Lydon ME. Properties of inorganically surface-modified zeolites and zeolite/ polyimide nanocomposite membranes. [Doctoral Dissertation]. Georgia Tech; 2013. Available from: http://hdl.handle.net/1853/49069
27.
Chen, Silu.
Poly(ether block amide)-based Composite Membranes for Carbon Capture.
Degree: 2020, University of Waterloo
URL: http://hdl.handle.net/10012/15498
► A great amount of anthropogenic CO2 emissions has caused the greenhouse effect which impacts the living environment of creatures on the planet. Effective carbon capture…
(more)
▼ A great amount of anthropogenic CO2 emissions has caused the greenhouse effect which impacts the living environment of creatures on the planet. Effective carbon capture technologies need to be developed to reduce CO2 emissions. Membrane separation technology can be applied in carbon capture due to its advantages in energy conservation and pollution prevention. Poly(ether block amide)-based (PEBAX 1657) composite membranes were developed for carbon capture in separating CO2/N2, CO2/CH4, and CO2/H2 mixtures in this study.
Polyvinylamine/PEBAX (PVAm/PEBAX) blend membranes were prepared for carbon capture by a solution casting method. The presence of PVAm enhanced membrane hydrophilicity and gas solubility. When the mass ratio of PVAm to PEBAX reached 0.025, the blend membrane showed a CO2 permeability of 600 Barrer at 298 K and a feed gas pressure of 400 kPa, while the CO2/N2, CO2/CH4, and CO2/H2 ideal gas selectivity remained comparable with pristine PEBAX membrane.
Diethanolamine/PVAm/PEBAX (DEA/PVAm/PEBAX) composite membranes were fabricated on polysulfone substrate membranes. The structures of the composite membranes not only improved gas permeance due to reducing the thickness of the permselective layer but also provided great mechanical strength. DEA can increase membrane hydrophilicity. The DEA/PVAm/PEBAX composite membrane with a mass fraction of DEA in the membrane of 0.2 exhibited a CO2 permeance of 12.5 GPU which was higher than the PEBAX composite membrane (6.24 GPU). The CO2/N2, CO2/CH4, and CO2/H2 selectivity was 42.3, 22.9, and 12.1 at room temperature and 700 kPa.
NH4F/PEBAX membranes were developed by a solution casting method. The introduction of F- affected the permeabilities of N2, CH4, and H2 in the membranes more significantly than CO2 permeability due to the salting-out effect. On the other hand, F- made water molecules more basic owing to the hydrogen bonds, which was more favorable for CO2 dissolution in the membranes. Compared to pristine PEBAX membrane, the selectivities CO2/N2, CO2/CH4, and CO2/H2 in the NH4F/PEBAX(0.1) membrane were 54%, 13%, and 22% higher, respectively, and the CO2 permeability was 372 Barrer at room temperature and 700 kPa.
Mixed matrix membranes were fabricated by embedding amino-modified multi-walled carbon nanotubes (MWCNTs) as a dispersed phase in a PEBAX polymer matrix. After acid treatment, MWCNTs were modified by polydopamine (PDA) through self-polymerization of dopamine (DA). The catechol groups can react with amine groups on branched polyethylenimine (PEI) by the Michael addition reaction and Schiff base reaction. The addition of MWCNT-PDA-PEI can facilitate CO2 transport and adjust membrane structures. When the mass ratio of MWCNTPDA-PEI to PEBAX was 0.08, the CO2 permeability of the prepared MMM was 2.4-fold of that of the PEBAX membrane, while the selectivities of CO2/N2, CO2/CH4, and CO2/H2 at room temperature and 300 kPa were 107, 26, and 11, respectively.
Subjects/Keywords: PEBAX; carbon capture; water-swollen membranes; salting-out effect; mixed matrix membranes; solution-diffusion mechanism; facilitated transport of CO2
…26
2.4.3
Mixed matrix membranes . . . . . . . . . . . . . . . . . . . . . . . . . 34… …x5D; . . . . . 29
2.12 Mixed matrix membranes with three kinds of fillers… …124
6.1
Structure of mixed matrix membranes… …inorganic, organic and mixed matrix membranes (MMMs). Zeolite-based inorganic membranes… …methyldiethanolamine
MEA
Monoethanolamine
MMM
Mixed matrix membrane
MOF
Mental organic framework
MWCNT…
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Chen, S. (2020). Poly(ether block amide)-based Composite Membranes for Carbon Capture. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15498
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Silu. “Poly(ether block amide)-based Composite Membranes for Carbon Capture.” 2020. Thesis, University of Waterloo. Accessed January 16, 2021.
http://hdl.handle.net/10012/15498.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Silu. “Poly(ether block amide)-based Composite Membranes for Carbon Capture.” 2020. Web. 16 Jan 2021.
Vancouver:
Chen S. Poly(ether block amide)-based Composite Membranes for Carbon Capture. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10012/15498.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen S. Poly(ether block amide)-based Composite Membranes for Carbon Capture. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15498
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
28.
Wester, Maarten.
Electrifying solutions for a miniature dialysis device.
Degree: 2018, University Utrecht
URL: http://dspace.library.uu.nl/handle/1874/374273
;
URN:NBN:NL:UI:10-1874-374273
;
urn:isbn:978-94-6323-378-1
;
URN:NBN:NL:UI:10-1874-374273
;
http://dspace.library.uu.nl/handle/1874/374273
► Conventional hemodialysis (HD) and peritoneal dialysis (PD) for patients with end stage kidney disease (ESKD) have major shortcomings. Removal of waste molecules and excess fluid…
(more)
▼ Conventional hemodialysis (HD) and peritoneal dialysis (PD) for patients with end stage kidney disease (ESKD) have major shortcomings. Removal of waste molecules and excess fluid is inadequate, contributing significantly to poor life quality, high morbidity and high mortality. Increasing the dialysis dose would be a major improvement in renal replacement therapy. A miniaturized dialysis device with reuse of spent dialysate can facilitate longer and more frequent dialysis. In addition, a miniaturized design that is independent of a fixed water supply because of dialysate regeneration will offer more freedom and autonomy to the patient. In designing such a device, effective removal strategies must be developed for removal of all uremic waste products, excess sodium and water. In this thesis, we showed that we were able to develop a miniature dialysis device that can remove considerable amounts of excess potassium, phosphate and urea by using sorbents for electrolyte balance and electro-oxidation (EO) for urea removal from spent dialysate. First, we selected sodium poly(styrene-divinylbenzene) sulfonate beads for potassium removal and iron oxide hydroxide beads for phosphate removal. These sorbents showed potent potassium and phosphate removal, no net calcium and magnesium removal when preloaded with these electrolytes and were also excellently regenerable. Regenerability was a major selection criterion since the possibility to regenerate spent sorbents would considerably lower exploitation costs of a miniaturized dialysis device. Second, we selected graphite electrodes for urea removal by EO since they had the best ratio between urea degradation and generation of toxic chloride oxidation by-products. Third, we validated the results of our in vitro experiments in vivo in a large animal (goat) model. We documented potential toxic side effects of the selected sorbents and EO and tested measures to correct these by effects. In addition, we showed in vitro that
mixed matrix membranes, dialysis
membranes with integrated activated carbon particles, could be an asset in the optimization of protein bound uremic toxin removal in a miniature dialysis device as well as in conventional HD. The research performed in this thesis paves the way for further testing of a miniature dialysis device and, in the long term, this will facilitate longer and easier dialysis at home for a larger proportion of the patients with ESKD requiring dialysis.
Advisors/Committee Members: Verhaar, M.C., Joles, J.A., Gerritsen, K.G.F..
Subjects/Keywords: miniature dialysis device; regeneration; sorbents; electro-oxidation; phosphate; urea; potassium; recirculation; mixed matrix membranes
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wester, M. (2018). Electrifying solutions for a miniature dialysis device. (Doctoral Dissertation). University Utrecht. Retrieved from http://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; http://dspace.library.uu.nl/handle/1874/374273
Chicago Manual of Style (16th Edition):
Wester, Maarten. “Electrifying solutions for a miniature dialysis device.” 2018. Doctoral Dissertation, University Utrecht. Accessed January 16, 2021.
http://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; http://dspace.library.uu.nl/handle/1874/374273.
MLA Handbook (7th Edition):
Wester, Maarten. “Electrifying solutions for a miniature dialysis device.” 2018. Web. 16 Jan 2021.
Vancouver:
Wester M. Electrifying solutions for a miniature dialysis device. [Internet] [Doctoral dissertation]. University Utrecht; 2018. [cited 2021 Jan 16].
Available from: http://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; http://dspace.library.uu.nl/handle/1874/374273.
Council of Science Editors:
Wester M. Electrifying solutions for a miniature dialysis device. [Doctoral Dissertation]. University Utrecht; 2018. Available from: http://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; http://dspace.library.uu.nl/handle/1874/374273
29.
Wester, Maarten.
Electrifying solutions for a miniature dialysis device.
Degree: 2018, University Utrecht
URL: https://dspace.library.uu.nl/handle/1874/374273
;
URN:NBN:NL:UI:10-1874-374273
;
urn:isbn:978-94-6323-378-1
;
URN:NBN:NL:UI:10-1874-374273
;
https://dspace.library.uu.nl/handle/1874/374273
► Conventional hemodialysis (HD) and peritoneal dialysis (PD) for patients with end stage kidney disease (ESKD) have major shortcomings. Removal of waste molecules and excess fluid…
(more)
▼ Conventional hemodialysis (HD) and peritoneal dialysis (PD) for patients with end stage kidney disease (ESKD) have major shortcomings. Removal of waste molecules and excess fluid is inadequate, contributing significantly to poor life quality, high morbidity and high mortality. Increasing the dialysis dose would be a major improvement in renal replacement therapy. A miniaturized dialysis device with reuse of spent dialysate can facilitate longer and more frequent dialysis. In addition, a miniaturized design that is independent of a fixed water supply because of dialysate regeneration will offer more freedom and autonomy to the patient. In designing such a device, effective removal strategies must be developed for removal of all uremic waste products, excess sodium and water. In this thesis, we showed that we were able to develop a miniature dialysis device that can remove considerable amounts of excess potassium, phosphate and urea by using sorbents for electrolyte balance and electro-oxidation (EO) for urea removal from spent dialysate. First, we selected sodium poly(styrene-divinylbenzene) sulfonate beads for potassium removal and iron oxide hydroxide beads for phosphate removal. These sorbents showed potent potassium and phosphate removal, no net calcium and magnesium removal when preloaded with these electrolytes and were also excellently regenerable. Regenerability was a major selection criterion since the possibility to regenerate spent sorbents would considerably lower exploitation costs of a miniaturized dialysis device. Second, we selected graphite electrodes for urea removal by EO since they had the best ratio between urea degradation and generation of toxic chloride oxidation by-products. Third, we validated the results of our in vitro experiments in vivo in a large animal (goat) model. We documented potential toxic side effects of the selected sorbents and EO and tested measures to correct these by effects. In addition, we showed in vitro that
mixed matrix membranes, dialysis
membranes with integrated activated carbon particles, could be an asset in the optimization of protein bound uremic toxin removal in a miniature dialysis device as well as in conventional HD. The research performed in this thesis paves the way for further testing of a miniature dialysis device and, in the long term, this will facilitate longer and easier dialysis at home for a larger proportion of the patients with ESKD requiring dialysis.
Advisors/Committee Members: Verhaar, Marianne C., Joles, JA, Gerritsen, KGF.
Subjects/Keywords: miniature dialysis device; regeneration; sorbents; electro-oxidation; phosphate; urea; potassium; recirculation; mixed matrix membranes
Record Details
Similar Records
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wester, M. (2018). Electrifying solutions for a miniature dialysis device. (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; https://dspace.library.uu.nl/handle/1874/374273
Chicago Manual of Style (16th Edition):
Wester, Maarten. “Electrifying solutions for a miniature dialysis device.” 2018. Doctoral Dissertation, University Utrecht. Accessed January 16, 2021.
https://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; https://dspace.library.uu.nl/handle/1874/374273.
MLA Handbook (7th Edition):
Wester, Maarten. “Electrifying solutions for a miniature dialysis device.” 2018. Web. 16 Jan 2021.
Vancouver:
Wester M. Electrifying solutions for a miniature dialysis device. [Internet] [Doctoral dissertation]. University Utrecht; 2018. [cited 2021 Jan 16].
Available from: https://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; https://dspace.library.uu.nl/handle/1874/374273.
Council of Science Editors:
Wester M. Electrifying solutions for a miniature dialysis device. [Doctoral Dissertation]. University Utrecht; 2018. Available from: https://dspace.library.uu.nl/handle/1874/374273 ; URN:NBN:NL:UI:10-1874-374273 ; urn:isbn:978-94-6323-378-1 ; URN:NBN:NL:UI:10-1874-374273 ; https://dspace.library.uu.nl/handle/1874/374273
30.
CHENG YOUDONG.
ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE.
Degree: 2019, National University of Singapore
URL: https://scholarbank.nus.edu.sg/handle/10635/161263
Subjects/Keywords: Advanced porous materials; mixed matrix membranes; carbon dioxide capture; metal-organic frameworks; covalent organic frameworks; 2D fillers
Record Details
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
YOUDONG, C. (2019). ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE. (Thesis). National University of Singapore. Retrieved from https://scholarbank.nus.edu.sg/handle/10635/161263
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
YOUDONG, CHENG. “ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE.” 2019. Thesis, National University of Singapore. Accessed January 16, 2021.
https://scholarbank.nus.edu.sg/handle/10635/161263.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
YOUDONG, CHENG. “ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE.” 2019. Web. 16 Jan 2021.
Vancouver:
YOUDONG C. ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE. [Internet] [Thesis]. National University of Singapore; 2019. [cited 2021 Jan 16].
Available from: https://scholarbank.nus.edu.sg/handle/10635/161263.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
YOUDONG C. ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE. [Thesis]. National University of Singapore; 2019. Available from: https://scholarbank.nus.edu.sg/handle/10635/161263
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
◁ [1] [2] ▶
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Open Access Theses and Dissertations
