subject:(Gases Separation)

Hong Kong University of Science and Technology

1. Wang, Maojian CBME. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.

Degree: 2017, Hong Kong University of Science and Technology

URL: https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

► As promising power generation technology, the advantages of Integrated Gasification Combined Cycle (IGCC) system are confirmed. However, high electricity production cost is the bottleneck before… (more)

▼ As promising power generation technology, the advantages of Integrated Gasification Combined Cycle (IGCC) system are confirmed. However, high electricity production cost is the bottleneck before fully commercialization. IGCC complicated process, including gasification, power and Air Separation Unit (ASU) island, provides opportunities to increase its efficiency through process optimization and integration. But there is a requirement of suitable models considering both prediction accuracy and flexibility to overcome existing barrier of large-scale optimization problem. In this thesis, the gap is fulfilled by proposing simplified models for three IGCC islands. Firstly, the novel simplified gasification island model is proposed based on reaction mechanism simplification using Water Gas Shit Reaction. After validation by experiment data, Cold Gas Efficiency optimization of IGCC plant gasifier is achieved with 10 % improvement. Then simplified model of power island is proposed and compared with rigorous commercial simulator. It is the foundation of further Gas Turbine performance optimization and Steam Turbine (ST) simultaneous parameter optimization and heat integration considering boiler feed water preheating. As the extension of simplified ST model, a novel shortcut model is proposed to optimize the regenerative retrofit for steam Rankine cycle. The most profitable regenerative scheme could generate from single to multiple extractions situations. After the validations with non-linear solver, the advantages of simple optimization procedures without building simulation and applying optimization algorithm are demonstrated in industrial case. Besides that, a simplified cryogenic ASU model is proposed and the non-standard operation conditions shows good performance for IGCC plant application. Finally, using all proposed models, the simultaneous parameter optimization and integration of IGCC system is completed in the aspect of economic and thermal performance. The simultaneous methodology is applied for gasification island firstly with 40 % profit and 4 % CGE improvements, and then for power and ASU island together with stepwise power output increment among cases.

Subjects/Keywords: Coal gasification; Synthesis gas; Gases; Separation

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APA (6^th Edition):

Wang, M. C. (2017). Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Maojian CBME. “Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.” 2017. Thesis, Hong Kong University of Science and Technology. Accessed September 15, 2019. https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Maojian CBME. “Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.” 2017. Web. 15 Sep 2019.

Vancouver:

Wang MC. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2017. [cited 2019 Sep 15]. Available from: https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang MC. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. [Thesis]. Hong Kong University of Science and Technology; 2017. Available from: https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

2. Binau, Nathan Jeremiah. Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight.

Degree: College of Engineering, 1997, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/7750

Subjects/Keywords: Separation (Technology); Gases Separation.; Oxygen.

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APA (6^th Edition):

Binau, N. J. (1997). Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/7750

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Binau, Nathan Jeremiah. “Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight.” 1997. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/7750.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Binau, Nathan Jeremiah. “Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight.” 1997. Web. 15 Sep 2019.

Vancouver:

Binau NJ. Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight. [Internet] [Thesis]. Montana State University; 1997. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7750.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Binau NJ. Assessment of air separation technologies for the recovery of oxygen for use in hypersonic flight. [Thesis]. Montana State University; 1997. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7750

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Sutthisa Konruang. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .

Degree: คณะวิทยาศาสตร์ ภาควิชาฟิสิกส์, 2015, Prince of Songkla University

URL: http://kb.psu.ac.th/psukb/handle/2010/10215

Subjects/Keywords: Gas separation membranes; Gases Separation

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APA (6^th Edition):

Konruang, S. (2015). Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . (Thesis). Prince of Songkla University. Retrieved from http://kb.psu.ac.th/psukb/handle/2010/10215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Konruang, Sutthisa. “Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .” 2015. Thesis, Prince of Songkla University. Accessed September 15, 2019. http://kb.psu.ac.th/psukb/handle/2010/10215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Konruang, Sutthisa. “Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .” 2015. Web. 15 Sep 2019.

Vancouver:

Konruang S. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . [Internet] [Thesis]. Prince of Songkla University; 2015. [cited 2019 Sep 15]. Available from: http://kb.psu.ac.th/psukb/handle/2010/10215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Konruang S. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . [Thesis]. Prince of Songkla University; 2015. Available from: http://kb.psu.ac.th/psukb/handle/2010/10215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

4. Keskin, Seda. Accelerating development of metal organic framework membranes using atomically detailed simulations.

Degree: PhD, Chemical Engineering, 2009, Georgia Tech

URL: http://hdl.handle.net/1853/31679

► A new group of nanoporous materials, metal organic frameworks (MOFs), have emerged as a fascinating alternative to more traditional nanoporous materials for membrane based gas… (more)

Subjects/Keywords: Diffusion; Adsorption; Metal organic framework; Membrane; Molecular simulation; Gas separation membranes; Gases Separation; Molecules Models

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APA (6^th Edition):

Keskin, S. (2009). Accelerating development of metal organic framework membranes using atomically detailed simulations. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/31679

Chicago Manual of Style (16^th Edition):

Keskin, Seda. “Accelerating development of metal organic framework membranes using atomically detailed simulations.” 2009. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/31679.

MLA Handbook (7^th Edition):

Keskin, Seda. “Accelerating development of metal organic framework membranes using atomically detailed simulations.” 2009. Web. 15 Sep 2019.

Vancouver:

Keskin S. Accelerating development of metal organic framework membranes using atomically detailed simulations. [Internet] [Doctoral dissertation]. Georgia Tech; 2009. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/31679.

Council of Science Editors:

Keskin S. Accelerating development of metal organic framework membranes using atomically detailed simulations. [Doctoral Dissertation]. Georgia Tech; 2009. Available from: http://hdl.handle.net/1853/31679

Montana State University

5. Spracklen, Neil Matthew. Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube.

Degree: College of Engineering, 1998, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/7713

Subjects/Keywords: Separation (Technology); Gases Separation.; Vortex tubes.

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APA (6^th Edition):

Spracklen, N. M. (1998). Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/7713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Spracklen, Neil Matthew. “Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube.” 1998. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/7713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Spracklen, Neil Matthew. “Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube.” 1998. Web. 15 Sep 2019.

Vancouver:

Spracklen NM. Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube. [Internet] [Thesis]. Montana State University; 1998. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Spracklen NM. Preliminary investigation of the separation of a binary, two-phase hydrocarbon mixture using a commercially available vortex tube. [Thesis]. Montana State University; 1998. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

6. Bae, Tae-Hyun. Engineering nanoporous materials for application in gas separation membranes.

Degree: PhD, Chemical Engineering, 2010, Georgia Tech

URL: http://hdl.handle.net/1853/42712

► The main theme of this dissertation is to engineer nanoporous materials and nanostructured surfaces for applications in gas separation membranes. Tunable methods have been developed… (more)

▼ The main theme of this dissertation is to engineer nanoporous materials and nanostructured surfaces for applications in gas separation membranes. Tunable methods have been developed to create inorganic hydroxide nanostructures on zeolite surfaces, and used to control the inorganic/polymer interfacial morphology in zeolite/polymer composite membranes. The study of the structure-property relationships in this material system showed that appropriate tuning of the surface modification methods leads to quite promising structural and permeation properties of the membranes made with the modified zeolites. First, a facile solvothermal deposition process was developed to prepare roughened inorganic nanostructures on zeolite pure silica MFI crystal surfaces. The functionalized zeolite crystals resulted in high-quality ̒mixed matrix̕ membranes, wherein the zeolite crystals were well-adhered to the polymeric matrix. Substantially enhanced gas separation characteristics were observed in mixed matrix membranes containing solvothermally modified MFI crystals. Gas permeation measurements on membranes containing nonporous uncalcined MFI revealed that the performance enhancements were due to significantly enhanced MFI-polymer adhesion and distribution of the MFI crystals. Solvothermal deposition of inorganic nanostructures was successfully applied to aluminosilicate LTA surfaces. Solvothermal treatment of LTA was tuned to deposit smaller/finer Mg(OH)₂ nanostructures, resulting in a more highly roughened zeolite surface. Characterization of particles and mixed matrix membranes revealed that the solvothermally surface-treated LTA particles were promising for application in mixed matrix membranes. Zeolite LTA materials with highly roughened surfaces were also successfully prepared by a new method: the ion-exchange-induced growth of Mg(OH)₂ nanostructures using the zeolite as the source of the Mg²⁺ ions. The size/shape of the inorganic nanostructures was tuned by adjusting several parameters such as the pH of the reagent solution and the amount of magnesium in the substrates and systematic modification of reaction conditions allowed generation of a good candidate for application in mixed matrix membranes. Zeolite/polymer adhesion properties in mixed matrix membranes were improved after the surface treatment compared to the untreated bare LTA. Surface modified zeolite 5A/6FDA-DAM mixed matrix membranes showed significant enhancement in CO₂ permeability with slight increases in CO₂/CH₄ selectivity as compared to the pure polymer membrane. The CO₂/CH₄ selectivity of the membrane containing surface treated zeolite 5A was much higher than that of membrane with untreated zeolite 5A. In addition, the use of metal organic framework (MOF) materials has been explored in mixed matrix membrane applications. ZIF-90 crystals with submicron and 2-μm sizes were successfully synthesized by a nonsolvent induced crystallization technique. Structural investigation revealed that the ZIF-90 particles synthesized by this method had high crystallinity,… Advisors/Committee Members: Jones, Christopher (Committee Co-Chair), Nair, Sankar (Committee Co-Chair), Koros, William (Committee Member), Meredith, Carson (Committee Member), Wang, Zhong Lin (Committee Member).

Subjects/Keywords: Gas separation; Membrane; Zeolite; Metal organic framework; Molecular sieve; Polymer composite; Gas separation membranes; Membranes (Technology); Gases Separation; Membranes (Technology); Adsorption

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APA (6^th Edition):

Bae, T. (2010). Engineering nanoporous materials for application in gas separation membranes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42712

Chicago Manual of Style (16^th Edition):

Bae, Tae-Hyun. “Engineering nanoporous materials for application in gas separation membranes.” 2010. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/42712.

MLA Handbook (7^th Edition):

Bae, Tae-Hyun. “Engineering nanoporous materials for application in gas separation membranes.” 2010. Web. 15 Sep 2019.

Vancouver:

Bae T. Engineering nanoporous materials for application in gas separation membranes. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/42712.

Council of Science Editors:

Bae T. Engineering nanoporous materials for application in gas separation membranes. [Doctoral Dissertation]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/42712

Georgia Tech

7. Bessho, Naoki. Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery.

Degree: PhD, Chemical Engineering, 2010, Georgia Tech

URL: http://hdl.handle.net/1853/42822

► A new concept of a "fiber sorbent" has been investigated. The fiber sorbent is produced as a pseudo-monolithic material comprising polymer (cellulose acetate, CA) and… (more)

Subjects/Keywords: Pressure swing adsorption; Phase separation; Adsorption; Zeolite; Material processing; Polymer; Gas separations; Hydrogen recovery; Fiber spinning; Separation (Technology); Gases Separation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bessho, N. (2010). Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42822

Chicago Manual of Style (16^th Edition):

Bessho, Naoki. “Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery.” 2010. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/42822.

MLA Handbook (7^th Edition):

Bessho, Naoki. “Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery.” 2010. Web. 15 Sep 2019.

Vancouver:

Bessho N. Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/42822.

Council of Science Editors:

Bessho N. Advanced pressure swing adsorption system with fiber sorbents for hydrogen recovery. [Doctoral Dissertation]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/42822

University of the Western Cape

8. Meyer, Faiek. Hydrogen selective properties of cesium-hydrogensulphate membranes .

Degree: 2006, University of the Western Cape

URL: http://hdl.handle.net/11394/2224

► Over the past 40 years, research pertaining to membrane technology has lead to the development of a wide range of applications including beverage production, water… (more)

Subjects/Keywords: Gases; Separation; Membrane separation; Separation (Technology); Membrane (Technology)

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APA (6^th Edition):

Meyer, F. (2006). Hydrogen selective properties of cesium-hydrogensulphate membranes . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2224

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Meyer, Faiek. “Hydrogen selective properties of cesium-hydrogensulphate membranes .” 2006. Thesis, University of the Western Cape. Accessed September 15, 2019. http://hdl.handle.net/11394/2224.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Meyer, Faiek. “Hydrogen selective properties of cesium-hydrogensulphate membranes .” 2006. Web. 15 Sep 2019.

Vancouver:

Meyer F. Hydrogen selective properties of cesium-hydrogensulphate membranes . [Internet] [Thesis]. University of the Western Cape; 2006. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/11394/2224.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Meyer F. Hydrogen selective properties of cesium-hydrogensulphate membranes . [Thesis]. University of the Western Cape; 2006. Available from: http://hdl.handle.net/11394/2224

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

9. McDermott, Sinead. Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases.

Degree: 2010, RIAN

URL: http://eprints.maynoothuniversity.ie/2264/

► The development of environmental technologies and their applications in aqueous and gaseous systems are essential in combating pollution. The formation and detailed characterisation of a… (more)

▼ The development of environmental technologies and their applications in aqueous and gaseous systems are essential in combating pollution. The formation and detailed characterisation of a polypyrrole (PPy) film modified with anionic macrocycles of either sulfonated-bcyclodextrin (sul-bCD) or sulfonated-calix[4]arene (sul-calix[4]) were carried out. These composite modified electrodes were used as electrochemical sensors for the detection of the harmful herbicide, paraquat. These polymer films were highly conducting and due to the immobilisation of the large anionic dopants within the PPy matrix they exhibited cation exchange behaviour on reduction. Cyclic voltammetry (CV), differential pulse voltammetry (DPV) and constant potential amperometry (CPA) were the techniques employed to evaluate the sensitivity of PPy/sul-bCD and PPy/sul-calix[4] towards the redox states of MV2+, MV+ and MV0 of paraquat. A limit of detection of 1.28 ´ 10-5 mol dm-3 and 3.48 ´ 10-6 mol dm-3 for the reduction of MV2+ was evaluated using CPA for PPy/sul-bCD and PPy/sul-calix[4], respectively. Additional studies were carried out to probe the nature of the complex interaction between the macrocyclic structures of sul-bCD and sul-calix[4] and the analytes, paraquat and diquat. Electrochemical and spectroscopic techniques were used to quantify the association constant, Ka. The data obtained from these techniques was consistent with electrostatic interactions as the major driving force in complex formation. In the case of the sul-calix[4] system the magnitude of Ka was influenced by ionic strength. The Ka values decreased from 106 to 103 mol-1 dm3 for the complex of diquat and sul-calix[4] in the absence and presence of 0.1 mol dm-3 Na2SO4, respectively. Carbon molecular sieve membranes (CMSMs) were employed for the separation of gases. CMSMs displayed selective permeation of CO2 over N2 by a factor of 24.7:1.0. Reduction in the permeability of the membrane was observed with aging. This was restored using an electro-regeneration procedure.

Subjects/Keywords: Chemistry; Polypyrrole; Macrocycles; Aqueous Pollutants; Carbon Membranes; Separation of Gases

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APA (6^th Edition):

McDermott, S. (2010). Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases. (Thesis). RIAN. Retrieved from http://eprints.maynoothuniversity.ie/2264/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

McDermott, Sinead. “Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases.” 2010. Thesis, RIAN. Accessed September 15, 2019. http://eprints.maynoothuniversity.ie/2264/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

McDermott, Sinead. “Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases.” 2010. Web. 15 Sep 2019.

Vancouver:

McDermott S. Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases. [Internet] [Thesis]. RIAN; 2010. [cited 2019 Sep 15]. Available from: http://eprints.maynoothuniversity.ie/2264/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

McDermott S. Polypyrrole Modified with Macrocycles for the Detection of Aqueous Pollutants and Carbon Membranes for the Separation of Gases. [Thesis]. RIAN; 2010. Available from: http://eprints.maynoothuniversity.ie/2264/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Hong Kong University of Science and Technology

10. Ng, Tsz Nok. Flow synthesis and positioning of porous materials in microreactors.

Degree: 2015, Hong Kong University of Science and Technology

URL: https://doi.org/10.14711/thesis-b1451946 ; http://repository.ust.hk/ir/bitstream/1783.1-74354/1/th_redirect.html

► Porous material has been playing an important role in global issues such as environmental pollution, energy crisis and global warming. Mesoporous silica has been applied… (more)

Subjects/Keywords: Microreactors; Microchemistry; Porous materials; Organometallic polymers; Catalysis; Gases; Separation

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APA (6^th Edition):

Ng, T. N. (2015). Flow synthesis and positioning of porous materials in microreactors. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-b1451946 ; http://repository.ust.hk/ir/bitstream/1783.1-74354/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ng, Tsz Nok. “Flow synthesis and positioning of porous materials in microreactors.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed September 15, 2019. https://doi.org/10.14711/thesis-b1451946 ; http://repository.ust.hk/ir/bitstream/1783.1-74354/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ng, Tsz Nok. “Flow synthesis and positioning of porous materials in microreactors.” 2015. Web. 15 Sep 2019.

Vancouver:

Ng TN. Flow synthesis and positioning of porous materials in microreactors. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2019 Sep 15]. Available from: https://doi.org/10.14711/thesis-b1451946 ; http://repository.ust.hk/ir/bitstream/1783.1-74354/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ng TN. Flow synthesis and positioning of porous materials in microreactors. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: https://doi.org/10.14711/thesis-b1451946 ; http://repository.ust.hk/ir/bitstream/1783.1-74354/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ryerson University

11. Hashemi, Nasim. Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD.

Degree: 2017, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A7136

► This doctoral thesis addresses the mixing of highly viscous Newtonian fluids (corn syrup solutions) in a novel aerated reactor equipped with a central impeller (a… (more)

▼ This doctoral thesis addresses the mixing of highly viscous Newtonian fluids (corn syrup solutions) in a novel aerated reactor equipped with a central impeller (a pitched blade turbine in upward or downward pumping mode) and a wall scraping anchor. The non-intrusive electrical resistance tomography (ERT), dynamic gas disengagement method (DGD), design of experiments (DOE), computational fluid dynamics (CFD), and population balance model (PBM) were employed to characterize the performance of this novel aerated system. The performance criteria to be examined were mixing time, power uptake, gas holdup, and bubble size distribution. In this study, novel correlations were developed to estimate the gassed power drawn by the coaxial mixer, mixing time, and gas holdup. In addition, to obtain a master power curve, two new dimensionless correlations were proposed for the generalized power number and gas flow number by incorporating the equivalent rotational speed for the coaxial mixer, speed ratio (central impeller speed/anchor speed), and the central impeller power fraction into these two correlations. The experimental data demonstrated that gas flow affected the aerated anchor power consumption and central impeller power consumption in different manners. It was also found that at the higher fluid viscosity and beyond the critical speed ratio of 10, the anchor power consumption was increased by increasing the speed ratio (i.e. decreasing the anchor speed). It was shown that in the presence of gas, the anchor impeller in combination with the upward pumping pitched blade turbine in the co-rotating mode exhibited shorter mixing times and lower power consumption than the anchor-downward pumping pitched blade coaxial mixer. To enhance the efficiency of the aerated mixer, it is critical to investigate the influence of the gas-liquid flow within the vessel on the bubble size distribution (BSD) and the local and global gas holdup. To achieve this goal, the effects of the bubble breakup and coalescence on the BSD within the vessel were incorporated into the CFD model through the CFD-PBM coupling. The experimental and simulation results showed that beyond the critical speed ratio of 10, the volume fractions of the large bubbles decreased while the volume fractions of the small bubbles increased.

Subjects/Keywords: Two phase flow – Measurement; Gases – Separation; Surfaces (Physics); Multiphase flow

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APA (6^th Edition):

Hashemi, N. (2017). Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A7136

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hashemi, Nasim. “Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD.” 2017. Thesis, Ryerson University. Accessed September 15, 2019. https://digital.library.ryerson.ca/islandora/object/RULA%3A7136.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hashemi, Nasim. “Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD.” 2017. Web. 15 Sep 2019.

Vancouver:

Hashemi N. Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD. [Internet] [Thesis]. Ryerson University; 2017. [cited 2019 Sep 15]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7136.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hashemi N. Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7136

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

12. Paulson, Gerald Thomas. Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes.

Degree: College of Engineering, 1982, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/3665

Subjects/Keywords: Membranes (Technology); Gases Separation.

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APA (6^th Edition):

Paulson, G. T. (1982). Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/3665

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Paulson, Gerald Thomas. “Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes.” 1982. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/3665.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Paulson, Gerald Thomas. “Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes.” 1982. Web. 15 Sep 2019.

Vancouver:

Paulson GT. Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes. [Internet] [Thesis]. Montana State University; 1982. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/3665.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Paulson GT. Effects of water vapor on the separation of methane and carbon dioxide by gas permeation through polymeric membranes. [Thesis]. Montana State University; 1982. Available from: https://scholarworks.montana.edu/xmlui/handle/1/3665

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

13. Seibel, Dennis Robert. The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes.

Degree: College of Engineering, 1973, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/6069

Subjects/Keywords: Gases Separation.; Membranes (Technology)

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APA (6^th Edition):

Seibel, D. R. (1973). The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/6069

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Seibel, Dennis Robert. “The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes.” 1973. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/6069.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Seibel, Dennis Robert. “The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes.” 1973. Web. 15 Sep 2019.

Vancouver:

Seibel DR. The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes. [Internet] [Thesis]. Montana State University; 1973. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6069.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Seibel DR. The separation of SOâ‚‚and Nâ‚‚ by permeation through modified vinylidene fluoride membranes. [Thesis]. Montana State University; 1973. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6069

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

14. Zavaleta, Ronanth. Selective permeation through modified vinylindene fluoride membranes.

Degree: College of Engineering, 1975, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/4689

Subjects/Keywords: Permeability.; Gases Separation.; Membranes (Technology)

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APA (6^th Edition):

Zavaleta, R. (1975). Selective permeation through modified vinylindene fluoride membranes. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/4689

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zavaleta, Ronanth. “Selective permeation through modified vinylindene fluoride membranes.” 1975. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/4689.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zavaleta, Ronanth. “Selective permeation through modified vinylindene fluoride membranes.” 1975. Web. 15 Sep 2019.

Vancouver:

Zavaleta R. Selective permeation through modified vinylindene fluoride membranes. [Internet] [Thesis]. Montana State University; 1975. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/4689.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zavaleta R. Selective permeation through modified vinylindene fluoride membranes. [Thesis]. Montana State University; 1975. Available from: https://scholarworks.montana.edu/xmlui/handle/1/4689

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Missouri – Columbia

15. Hendry, Doug. Investigation of supercritical fluids for use in biomass processing & carbon recycling.

Degree: 2012, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/14997

► An apparatus was built in the Mizzou Carbon Recycling Center to explore the continuous thermochemical conversion of biomass and model compounds in supercritical water. The… (more)

▼ An apparatus was built in the Mizzou Carbon Recycling Center to explore the continuous thermochemical conversion of biomass and model compounds in supercritical water. The apparatus was used to investigate gasification or biomass and other organics in supercritical water to produce fuel gases. It proved to be superior to other designs in that the apparatus was capable of achieving both high gasification efficiencies and high gasification rates. The apparatus is also amenable other thermochemical conversion processes including SCW oxidation (combustion), hydrolysis in super and subcritical water, or combinations thereof. The continuous supercritical water gasification apparatus is used to investigate glucose gasification in supercritical water at high temperatures and low residence times. A 23 full factorial experiment was performed to determine the effects of feed concentration, temperature, and residence time on glucose gasification. Glucose is a good representative of cellulosic biomass. Additionally, supercritical water gasification of ethanol and butanol as biomass model compounds was explored over a range of residence times from 0.7 to 34 s. Residence time was decreased until turbulence was achieved (τ ≤ 1.2 s). As fluid transitioned from laminar to turbulent flow, gasification rate was maximized while gasification efficiency was reduced. Gasification rates up to 107 g/L-s were observed; this is nearly an order of magnitude higher than previously reported. Arrhenius parameters were estimated to model the intrinsic kinetics of gasification of model compounds in supercritical water operating in plug flow without any transport limitations in the radial direction; this technique has never before been applied to supercritical water gasification. Separations relevant to operation the continuous supercritical water gasification apparatus, and thus a biorefinery, are explored with the motivation to increase purity and energy density of gasification products. The separation of a supercritical mixture of nitrogen and carbon dioxide is investigated at pressures from 10 to 31 MPa and temperatures of -5° and 23°C. Nitrogen is used as a model compound for valuable fuel gases (H2, CH4) produced during SCWG. Nitrogen mole fraction increases in the positive vertical direction near the top of the pressure vessel leading to an effective separation. The separation effectiveness is increased with increased pressure and decreased temperature. Preliminary experiments were also performed with additional binary systems: CO2/H2, CO2/CH4, and CO2/Air, all of which behave similarly to the CO2/N2 system. This kind of high pressure separation has applications in continuous processing of pressurized gasification products, other biomass refinery operations, and in the natural gas industry. Solid feeding is an important issue during biorefinery operation. One of the largest delays with the implementation of SCWG technology on a large scale is the lack a reliable feeding mechanism for a variety of biomass and waste feeds. A novel feeder was… Advisors/Committee Members: Jacoby, William A. (advisor).

Subjects/Keywords: supercritical fluids; carbon capture; gasification; fuel gases; separation effectiveness

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APA (6^th Edition):

Hendry, D. (2012). Investigation of supercritical fluids for use in biomass processing & carbon recycling. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/14997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hendry, Doug. “Investigation of supercritical fluids for use in biomass processing & carbon recycling.” 2012. Thesis, University of Missouri – Columbia. Accessed September 15, 2019. http://hdl.handle.net/10355/14997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hendry, Doug. “Investigation of supercritical fluids for use in biomass processing & carbon recycling.” 2012. Web. 15 Sep 2019.

Vancouver:

Hendry D. Investigation of supercritical fluids for use in biomass processing & carbon recycling. [Internet] [Thesis]. University of Missouri – Columbia; 2012. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/10355/14997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hendry D. Investigation of supercritical fluids for use in biomass processing & carbon recycling. [Thesis]. University of Missouri – Columbia; 2012. Available from: http://hdl.handle.net/10355/14997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

16. 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 (6^th 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 (16^th Edition):

Liu, Junqiang. “Development of next generation mixed matrix hollow fiber membranes for butane isomer separation.” 2010. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/42807.

MLA Handbook (7^th Edition):

Liu, Junqiang. “Development of next generation mixed matrix hollow fiber membranes for butane isomer separation.” 2010. Web. 15 Sep 2019.

Vancouver:

Liu J. Development of next generation mixed matrix hollow fiber membranes for butane isomer separation. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2019 Sep 15]. 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

Universidade do Rio Grande do Sul

17. Lopez, Diego Ruben Schmeda. Separação de CO2 em gases de combustão : aplicação de membranas e criogenia.

Degree: 2010, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/24150

►

Este trabalho tem por objetivo avaliar a viabilidade técnica de processos de separação de gás carbônico em correntes de gases de combustão. Neste sentido, a… (more)

▼

Este trabalho tem por objetivo avaliar a viabilidade técnica de processos de separação de gás carbônico em correntes de gases de combustão. Neste sentido, a separação por meio de membranas e por criogenia são avaliadas por meio de simulação de sistemas. As propostas envolvendo membranas avaliam arranjos de membranas em série, os quais são otimizados para condições de maior fluxo permeado e maior beneficio econômico. A corrente de alimentação é de 5 kmol/s e as respectivas frações molares de CO2 e N2 que compõem esta corrente são 0,15 e 0,85. Os resultados obtidos da otimização, para um arranjo de três membranas em série de polyimida de 9000 m² de área superficial, foram uma corrente de permeado de 443,1 mol/s de CO2 a 41,6%, correspondendo a aproximadamente 59% do CO2 da corrente de alimentação. Já com um arranjo de 6 membranas de 9000 m², onde a função objetivo é o maior lucro, foi selecionado o material kapton e a quantidade de CO2 separada é 161,12 mol/s, cuja concentração na mistura é de 79%, e a função objetivo tem um valor de 24.405,30 €/ano. Na outra parte do trabalho, propõe-se e avalia-se um ciclo para o aproveitamento da disponibilidade térmica na regasificação do gás natural líquido, para liquefação de CO2. Obtém-se como resultando em CO2 líquido com fração molar igual a 94%. Este processo consta de uma corrente proveniente da combustão completa de 1 mol/s de metano, contendo 1 mol/s de CO2 e 7,52 mol/s de N2. Esta corrente é comprimida e resfriada até atingir a pressão de 4000 kPa e 25 °C, posteriormente uma membrana enriquece a corrente de gases de combustão, que novamente é comprimida e resfriada até se obter a condensação e separação do CO2. Realiza-se o cálculo de equilíbrio líquido-vapor da mistura utilizando as equações de Peng-Robinson e a regra de mistura de Van der Waals no software VRTherm. A vazão molar do CO2 líquido obtida é de 0,3207 mol/s na concentração declarada. A intensidade energética do processo é de 1,135 kWh/kg de CO2 liquefeito.

The objective of this work is to evaluate the technical feasibility of carbon dioxide separation processes of flue gases streams. In this way, separation processes due membrane and cryogenics are evaluated by system simulation. The systems using membranes evaluates setup of those membranes in series, these setups are optimized for the largest permeate molar flow and the largest economic profit. The feed stream is a 5 kmol/s CO2 – N2 mixture, with molar fraction of 0.15 and 0.85 respectively. The result obtained from the optimization for a setup of three polyimide membranes of 9000 m² is a permeate stream of 443.1 mol/s with CO2 at 41.6%, corresponding to aproximadely 59% of the CO2 contained in the feed stream. When a setup of six 9000 m² membranes is analyzed using an objective function that results in the largest profit, kapton was selected as the material for the membranes. The quantity of CO2 captured is 161.12 mol/s, at 79% of concentration in the mixture, and the objective function has a value of 24,405.30 €/year. The second part of this work,…

Advisors/Committee Members: Schneider, Paulo Smith.

Subjects/Keywords: Separação por membranas; CO2 capture; Membranes; Criogenia; Greenhouse gases; Combustão; Gas separation; Gás; Mixture of gases; Cryogenics; Liquid natural gas

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APA (6^th Edition):

Lopez, D. R. S. (2010). Separação de CO2 em gases de combustão : aplicação de membranas e criogenia. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/24150

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lopez, Diego Ruben Schmeda. “Separação de CO2 em gases de combustão : aplicação de membranas e criogenia.” 2010. Thesis, Universidade do Rio Grande do Sul. Accessed September 15, 2019. http://hdl.handle.net/10183/24150.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lopez, Diego Ruben Schmeda. “Separação de CO2 em gases de combustão : aplicação de membranas e criogenia.” 2010. Web. 15 Sep 2019.

Vancouver:

Lopez DRS. Separação de CO2 em gases de combustão : aplicação de membranas e criogenia. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2010. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/10183/24150.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lopez DRS. Separação de CO2 em gases de combustão : aplicação de membranas e criogenia. [Thesis]. Universidade do Rio Grande do Sul; 2010. Available from: http://hdl.handle.net/10183/24150

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Wu, Haohan, 1984-. Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs).

Degree: Chemistry and Chemical Biology, 2013, Rutgers University

URL: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000069006

Subjects/Keywords: Gases – Absorption and adsorption; Gases – Separation

…on small gases adsorption and separation work, hydrocarbon adsorption and separation became… …4 Table 2. Single-component separation ratios of CO2/N2 at 25 °C. Reproduced with… …9 Table 3. Single-component gas uptake in 1′ and separation ratios of CO2/Gas at 25 °C… …10 Table 4. Single-component gas uptake in 2’ and separation ratios at 25 °C. Reproduced… …26 Figure 27. Comparison of CO2 (black) and selected gases (CH4, red; CO…

10 more images…

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APA (6^th Edition):

Wu, Haohan, 1. (2013). Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs). (Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000069006

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wu, Haohan, 1984-. “Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs).” 2013. Thesis, Rutgers University. Accessed September 15, 2019. http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000069006.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wu, Haohan, 1984-. “Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs).” 2013. Web. 15 Sep 2019.

Vancouver:

Wu, Haohan 1. Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs). [Internet] [Thesis]. Rutgers University; 2013. [cited 2019 Sep 15]. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000069006.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wu, Haohan 1. Small gases and hydrocarbon adsorption and separation in microporous metal organic frameworks (MMOFs). [Thesis]. Rutgers University; 2013. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000069006

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

19. Mus, Mark David. The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes.

Degree: College of Engineering, 1985, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/5787

Subjects/Keywords: Membranes (Technology); Separation (Technology); Gases Separation.; Oxygen.

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APA (6^th Edition):

Mus, M. D. (1985). The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/5787

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mus, Mark David. “The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes.” 1985. Thesis, Montana State University. Accessed September 15, 2019. https://scholarworks.montana.edu/xmlui/handle/1/5787.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mus, Mark David. “The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes.” 1985. Web. 15 Sep 2019.

Vancouver:

Mus MD. The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes. [Internet] [Thesis]. Montana State University; 1985. [cited 2019 Sep 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/5787.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mus MD. The separation of oxygen from air using commercial, plasticized, and nonplasticized polymeric membranes. [Thesis]. Montana State University; 1985. Available from: https://scholarworks.montana.edu/xmlui/handle/1/5787

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales

20. Crimmins, T. S. The use of ceramic membranes for gas filtration.

Degree: Chemical Engineering & Industrial Chemistry, Faculty of Applied Science, 1990, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/57756 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:44845/SOURCE02?view=true

Subjects/Keywords: Membrane separation; Gases; Separation; Thesis Digitisation Program

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APA (6^th Edition):

Crimmins, T. S. (1990). The use of ceramic membranes for gas filtration. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/57756 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:44845/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Crimmins, T S. “The use of ceramic membranes for gas filtration.” 1990. Masters Thesis, University of New South Wales. Accessed September 15, 2019. http://handle.unsw.edu.au/1959.4/57756 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:44845/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Crimmins, T S. “The use of ceramic membranes for gas filtration.” 1990. Web. 15 Sep 2019.

Vancouver:

Crimmins TS. The use of ceramic membranes for gas filtration. [Internet] [Masters thesis]. University of New South Wales; 1990. [cited 2019 Sep 15]. Available from: http://handle.unsw.edu.au/1959.4/57756 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:44845/SOURCE02?view=true.

Council of Science Editors:

Crimmins TS. The use of ceramic membranes for gas filtration. [Masters Thesis]. University of New South Wales; 1990. Available from: http://handle.unsw.edu.au/1959.4/57756 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:44845/SOURCE02?view=true

Georgia Tech

21. Pacheco Rodriguez, Diana Marisol. Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption.

Degree: MS, Chemical Engineering, 2010, Georgia Tech

URL: http://hdl.handle.net/1853/42722

► Improvement of the efficiency of carbon dioxide (CO2) separation from flue gases has been identified as a high-priority research area to reduce the total energy… (more)

Subjects/Keywords: Cellulose acetate; CO2 sorption; Aminosilanes; Grafting; Separation (Technology); Adsorption; Flue gases; Sorbents; Carbon dioxide

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APA (6^th Edition):

Pacheco Rodriguez, D. M. (2010). Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42722

Chicago Manual of Style (16^th Edition):

Pacheco Rodriguez, Diana Marisol. “Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption.” 2010. Masters Thesis, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/42722.

MLA Handbook (7^th Edition):

Pacheco Rodriguez, Diana Marisol. “Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption.” 2010. Web. 15 Sep 2019.

Vancouver:

Pacheco Rodriguez DM. Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption. [Internet] [Masters thesis]. Georgia Tech; 2010. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/42722.

Council of Science Editors:

Pacheco Rodriguez DM. Aminosilane-functionalized cellulosic polymers for increased carbon dioxide sorption. [Masters Thesis]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/42722

University of Southern California

22. Bagheri-Tar, Faezeh. Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes.

Degree: PhD, Chemical Engineering, 2009, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/487347/rec/5196

► The goal of the first part of the Thesis is to prepare carbon molecular-sieve (CMS) particles to be utilized in the preparation of mixed-matrix (MM)… (more)

▼ The goal of the first part of the Thesis is to prepare carbon molecular-sieve (CMS) particles to be utilized in the preparation of mixed-matrix (MM) membranes. Thus an experimental investigation was carried out using electrospray of polyetherimide (Ultem-1000 PEI) solutions in dichloroethane to produce fairly monodisperse, fine PEI particles. The effect of three key experimental parameters was investigated, namely, the applied voltage, the liquid flow rate, and the polymer concentration. The liquid flow rate was found to have the most important effect in determining the particle size. An optimal range of flow rates often exists. Particles obtained within the optimal range of the flow rate have a narrower size distribution, and a dense and spherical morphology, compared with those produced with other liquid flow rates. The CMS particles, prepared ex-situ by the pyrolysis of the electrospray PEI particles, are compared in their properties with the CMS particles that were generated by conventional grinding of pyrolyzed PEI pellets. They were found to, generally, have similar structural properties.; In the second part of the Thesis, the technical feasibility of utilizing the MMCMS membranes in the separation of H2 and CO2 from gas mixtures of relevance to power generation was studied. The MM membranes were fabricated by incorporating the CMS nanoparticles into a polymer matrix. The CMS nanoparticles were prepared by wet-grinding of pyrolyzed pellets of PEI. Flat-sheet MM polymer-base (MMP) membranes, and supported MM-CMS membranes were both prepared. For the MMP membranes, both the CO2 and CH4 permeabilities increased with increasing the CMS content, while the CO2/CH4 selectivity remained either unchanged or was slightly reduced. This may be due to the poor adhesion between the polymer and the CMS nanoparticles. In the case of the MM-CMS membranes, the incorporation of the CMS nanoparticles greatly enhanced the permeability and selectivity. An ideal CO2/CH4 separation factor of 120 was obtained with a CO2 permeance around 9.0 × 10-8 mol/m2.s.Pa for membranes with a CMS particle loadings of 10 wt.%. The corresponding H2 separation factor was 130 and with a H2 permeance of 9.7 × 10-8 mol/m2.s.Pa. Also investigated was the influence of the total solid fraction on the permeation properties of the MM-CMS and CMS membranes. Advisors/Committee Members: Tsotsis, Theodore T. (Committee Chair), Sahimi, Muhammad (Committee Member), Williams, Travis J. (Committee Member).

Subjects/Keywords: mixed-matrix membrane; carbon molecular-sieve (CMS); plyetherimide (PEI); electrospray; nanoparticles; separation of gases

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APA (6^th Edition):

Bagheri-Tar, F. (2009). Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/487347/rec/5196

Chicago Manual of Style (16^th Edition):

Bagheri-Tar, Faezeh. “Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes.” 2009. Doctoral Dissertation, University of Southern California. Accessed September 15, 2019. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/487347/rec/5196.

MLA Handbook (7^th Edition):

Bagheri-Tar, Faezeh. “Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes.” 2009. Web. 15 Sep 2019.

Vancouver:

Bagheri-Tar F. Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes. [Internet] [Doctoral dissertation]. University of Southern California; 2009. [cited 2019 Sep 15]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/487347/rec/5196.

Council of Science Editors:

Bagheri-Tar F. Preparation of polyetherimide nanoparticles by electrospray drying, and their use in the preparation of mixed-matrix carbon molecular-sieve (CMS) membranes. [Doctoral Dissertation]. University of Southern California; 2009. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/487347/rec/5196

Georgia Tech

23. Kratochvil, Adam Michal. Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification.

Degree: PhD, Chemical Engineering, 2008, Georgia Tech

URL: http://hdl.handle.net/1853/29678

► Membrane separations are rapidly growing alternatives to traditionally expensive gas separation processes. For natural gas purification, membranes are used to remove carbon dioxide to prevent… (more)

▼ Membrane separations are rapidly growing alternatives to traditionally expensive gas separation processes. For natural gas purification, membranes are used to remove carbon dioxide to prevent pipeline corrosion and increase the heating value of the natural gas. The robust chemical and physical properties of polyimide membranes make them ideal for the numerous components and high pressures associated with natural gas production. Typically, the performance of membranes changes over time as a result of physical aging of the polymer. Previous work shows that the thin selective layer of an asymmetric hollow fiber membrane, the morphology of choice for gas separations, ages differently than a thick dense film of the same material. Also, carbon dioxide, which is highly soluble in most polymers, can actively swell and plasticize polymer membranes at higher pressures. In this work, free acid groups present in the model polyimide are covalently crosslinked to stabilize the matrix against plasticization. Physical aging of two different crosslinked derivatives are compared to the free acid polyimide through gas permeation, gas sorption, and refractive index measurements. Thick (~50 m) and thin (~650 nm) films are examined to determine the effects of sample dimension on physical aging. The crosslinking mechanism employs diol substituents to form ester linkages through the free acid group. However, the annealing treatment, above the glass transition temperature, used to "reset" the thermal history of the films is found to form a new crosslinked polymer. Characterization of this new crosslinking mechanism reveals a high-temperature decarboxylation of the free acid creates free-radical phenyl groups which form covalent crosslinks through other portions of the polymer structure. Since ester crosslinks may be vulnerable to hydrolysis in aggressive gas feed streams, this new mechanism of crosslinking may create a more robust membrane for aggressive separations. In addition to the physical aging study, supercritical carbon dioxide conditioning of the two glycol crosslinked polyimides is compared to the free acid polymer. In this case, the free acid polymer is not crosslinked since the esterification crosslinking reaction occurs at much lower temperature than the decarboxylation mechanism. The free acid polymer displays an atypical permeation response under supercritical carbon dioxide conditions which suggests a structural reorganization of the polymer occurs. The crosslinked polymers do not exhibit this type of response. Mixed gas permeation confirms a substantial decrease in the productivity of the free acid polyimide and reveals the enhanced stability of the crosslinked polyimides following the supercritical carbon dioxide conditioning. Finally, examination of structurally similar fluorine-containing polyimides following approximately 18 years of aging allows the study of polymer structure on physical aging. A 6FDA-based polyimide is compared to a BPDA-based polyimide to understand the effects of bulky, CF3… Advisors/Committee Members: Koros, William (Committee Chair), Beckham, Haskell (Committee Member), Eckert, Charles (Committee Member), Henderson, Cliff (Committee Member), Meredith, Carson (Committee Member).

Subjects/Keywords: Supercritical carbon dioxide; Physical aging; Natural gas; Membrane; Polyimide; Gases Purification; Gases Separation; Gas separation membranes; Polyimides; Membrane separation

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APA (6^th Edition):

Kratochvil, A. M. (2008). Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/29678

Chicago Manual of Style (16^th Edition):

Kratochvil, Adam Michal. “Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification.” 2008. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/29678.

MLA Handbook (7^th Edition):

Kratochvil, Adam Michal. “Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification.” 2008. Web. 15 Sep 2019.

Vancouver:

Kratochvil AM. Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification. [Internet] [Doctoral dissertation]. Georgia Tech; 2008. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/29678.

Council of Science Editors:

Kratochvil AM. Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification. [Doctoral Dissertation]. Georgia Tech; 2008. Available from: http://hdl.handle.net/1853/29678

Universiteit Utrecht

24. Gubbels, K.B. Exotic Superfluidity in Imbalanced Fermi Mixtures.

Degree: 2010, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/37504

► We consider ultracold imbalanced Fermi gases with strong attractive interactions, for which Cooper-pair formation plays an important role. The two-component mixtures consist either of identical… (more)

▼ We consider ultracold imbalanced Fermi gases with strong attractive interactions, for which Cooper-pair formation plays an important role. The two-component mixtures consist either of identical fermionic atoms in two different hyperfine states, or of two different atomic species. In both cases, the number of atoms for each component is allowed to be different, leading to a spin imbalance or a polarization. In the second case, the two different species also give rise to a mass imbalance for the particles. Imbalanced Fermi mixtures play a fundamental role in condensed-matter, nuclear and astroparticle physics. Experimentally, the atomic mixtures are made strongly interacting with the use of two-channel Feshbach resonances. We start out by treating these in more detail. We review the relevant scattering theory, and apply it to the well-studied case of resonant s-wave collisions with zero angular momentum. Furthermore, we discuss the less-studied case of p-wave collisions with nonzero angular momentum, and the inhomogeneous case due to a trapping potential. Having discussed the two-body physics, we turn to the many-body physics. The pioneering experimental studies of Cooper pairing in lithium-6 mixtures with a spin imbalance were performed by Zwierlein et al. [Science 311, 492 (2006)] and Partridge et al. [Science 311, 503 (2006)]. We study the mean-field theory for the polarized Fermi mixture to obtain a qualitative understanding of these experiments. In the unitarity limit, where the scattering length of the interatomic interaction diverges, the theory gives rise to two exotic superfluid phases that are absent in the balanced mixture. These are the gapless superfluid Sarma phase and the phase-separated phase. By using renormalization group techniques to account for the effects of strong interactions, we obtain also quantitative agreement with Monte-Carlo calculations and experiments. We then generalize our knowledge of the solely spin-imbalanced mixture to the mass-imbalanced case, where in particular the mixture consisting of lithium-6 and potassium-40 is experimentally promising. We study the mean-field phase diagram for this mixture in the unitarity limit, where we not only find phase separation and Sarma superfluidity, but also a Lifshitz point. The latter signals an instability towards a supersolid phase. We also include the effects of fluctuations, which do not alter the topology of the phase diagram. However, fluctuation effects lower the critical temperatures with an experimentally relevant factor of three. Finally, we study superfluidity in a fully polarized gas of potassium-40 atoms near a p-wave Feshbach resonance. In particular, we consider coherent Josephson oscillations between the superfluid components in the two channels of the resonance, whose frequencies contain a clear signature of the quantum phase transition that occurs as a function of applied magnetic field.

Subjects/Keywords: Natuur- en Sterrenkunde; Superfluidity; Superconductivity; Bose-Einstein condensation; Supersolidity; Feshbach resonances; Fermi mixtures; Quantum gases; Phase separation; Josephson oscillations

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APA (6^th Edition):

Gubbels, K. B. (2010). Exotic Superfluidity in Imbalanced Fermi Mixtures. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/37504

Chicago Manual of Style (16^th Edition):

Gubbels, K B. “Exotic Superfluidity in Imbalanced Fermi Mixtures.” 2010. Doctoral Dissertation, Universiteit Utrecht. Accessed September 15, 2019. http://dspace.library.uu.nl:8080/handle/1874/37504.

MLA Handbook (7^th Edition):

Gubbels, K B. “Exotic Superfluidity in Imbalanced Fermi Mixtures.” 2010. Web. 15 Sep 2019.

Vancouver:

Gubbels KB. Exotic Superfluidity in Imbalanced Fermi Mixtures. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2010. [cited 2019 Sep 15]. Available from: http://dspace.library.uu.nl:8080/handle/1874/37504.

Council of Science Editors:

Gubbels KB. Exotic Superfluidity in Imbalanced Fermi Mixtures. [Doctoral Dissertation]. Universiteit Utrecht; 2010. Available from: http://dspace.library.uu.nl:8080/handle/1874/37504

University of Southern California

25. Naserifar, Saber. A process-based molecular model of nano-porous silicon carbide membranes.

Degree: PhD, Chemical Engineering, 2013, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/283510/rec/311

► A broad class of important materials, such as silicon carbide (SiC), are fabricated by temperature-controlled pyrolysis of pre-ceramic polymers. In particular, fabrication of SiC membranes… (more)

▼ A broad class of important materials, such as silicon carbide (SiC), are fabricated by temperature-controlled pyrolysis of pre-ceramic polymers. In particular, fabrication of SiC membranes by pyrolysis of a polymer precursor that contains Si is quite attractive for separation of hydrogen from other gases. It has been quite difficult to extract atomistic-scale information about such SiC membranes, since they are amorphous. The research presented in this dissertation extends the ReaxFF reactive force field to describe the processes involved in the thermal decomposition of hydridopolycarbosilane (HPCS) to form SiC nanoporous membranes. ❧ First, we carry out quantum mechanical calculations on models meant to capture the important reaction steps and structures. Then, we develop a model of the HPCS polymer and utilize ReaxFF to describe the thermal degradation and decomposition of the polymer as the system is heated by molecular dynamics (MD) simulations. In the next step, we use ReaxFF for reactive dynamics of HPCS over a wide range of temperature. We then simulate pyrolysis of the HPCS under conditions that closely mimic the conditions of the fabrication of nanoporous SiC membranes to produce amorphous SiC material. The pyrolysis results and the computed properties of the SiC ceramic are shown to be in good agreement with the experimental data. ❧ To further test the validity of the model and to provide insight into improving the performance of the membrane, extensive MD simulations were carried out to compute the self-diffusivities of H₂, CO₂ and CH₄ in the molecular model of SiC. The results indicate higher values of the diffusivity for H₂. The morphology of the amorphous SiC layer is characterized by computing its accessible free volumes and the cavity distributions. ❧ Finally, we use the molecular model of SiC and non-equilibrium MD simulations in order to study transport and separation in the membrane of two binary gaseous mixtures, namely, H₂/CO₂ and H₂/CH₄ at various temperatures and pressure drops, applied externally to the membrane. When compared with our own experimental data, the model is demonstrated to provide accurate predictions for various properties of interest and, in particular, for the separation factors of the mixtures. The model can be used to determine the optimal membrane's thickness. Advisors/Committee Members: Sahimi, Muhammad (Committee Chair), Haas, Stephan W. (Committee Member), Tsotsis, Theodore T. (Committee Member).

Subjects/Keywords: silicon-carbide membranes; ReaxFF force filed development; pyrolysis simulation of HPCS; amorphous SiC model; diffusion of gases; separation of gaseous mixtures

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APA (6^th Edition):

Naserifar, S. (2013). A process-based molecular model of nano-porous silicon carbide membranes. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/283510/rec/311

Chicago Manual of Style (16^th Edition):

Naserifar, Saber. “A process-based molecular model of nano-porous silicon carbide membranes.” 2013. Doctoral Dissertation, University of Southern California. Accessed September 15, 2019. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/283510/rec/311.

MLA Handbook (7^th Edition):

Naserifar, Saber. “A process-based molecular model of nano-porous silicon carbide membranes.” 2013. Web. 15 Sep 2019.

Vancouver:

Naserifar S. A process-based molecular model of nano-porous silicon carbide membranes. [Internet] [Doctoral dissertation]. University of Southern California; 2013. [cited 2019 Sep 15]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/283510/rec/311.

Council of Science Editors:

Naserifar S. A process-based molecular model of nano-porous silicon carbide membranes. [Doctoral Dissertation]. University of Southern California; 2013. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/283510/rec/311

Kansas State University

26. Chu, I-cheng. Interphase mass transfer in various types of column.

Degree: MS, 1957, Kansas State University

URL: http://hdl.handle.net/2097/25126

Subjects/Keywords: Gases – Absorption and adsorption.; Separation (Technology); Masters theses

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APA (6^th Edition):

Chu, I. (1957). Interphase mass transfer in various types of column. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/25126

Chicago Manual of Style (16^th Edition):

Chu, I-cheng. “Interphase mass transfer in various types of column.” 1957. Masters Thesis, Kansas State University. Accessed September 15, 2019. http://hdl.handle.net/2097/25126.

MLA Handbook (7^th Edition):

Chu, I-cheng. “Interphase mass transfer in various types of column.” 1957. Web. 15 Sep 2019.

Vancouver:

Chu I. Interphase mass transfer in various types of column. [Internet] [Masters thesis]. Kansas State University; 1957. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/2097/25126.

Council of Science Editors:

Chu I. Interphase mass transfer in various types of column. [Masters Thesis]. Kansas State University; 1957. Available from: http://hdl.handle.net/2097/25126

Kansas State University

27. Blaha, John Joseph. The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks.

Degree: 1976, Kansas State University

URL: http://hdl.handle.net/2097/11308

Subjects/Keywords: Separation (Technology); Carbonated beverages – Analysis.; Gases – Separation.; Ultrasonic waves – Industrial applications.; Chelates

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APA (6^th Edition):

Blaha, J. J. (1976). The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks. (Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/11308

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Blaha, John Joseph. “The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks.” 1976. Thesis, Kansas State University. Accessed September 15, 2019. http://hdl.handle.net/2097/11308.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Blaha, John Joseph. “The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks.” 1976. Web. 15 Sep 2019.

Vancouver:

Blaha JJ. The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks. [Internet] [Thesis]. Kansas State University; 1976. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/2097/11308.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blaha JJ. The use of a Coulter counter to quantitatively determine mold in cabonated soft drinks ; The investigation of dimeric halogen addition to piaselenole ; Ultrasonic attenuation of metal chelates: Use of a Coulter counter to quantitatively determine mold in carbonated soft drinks. [Thesis]. Kansas State University; 1976. Available from: http://hdl.handle.net/2097/11308

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Ma, Canghai. Optimization of asymmetric hollow fiber membranes for natural gas separation.

Degree: MS, Chemical Engineering, 2011, Georgia Tech

URL: http://hdl.handle.net/1853/43700

► Compared to the conventional amine adsorption process to separate CO₂ from natural gas, the membrane separation technology has exhibited advantages in easy operation and lower… (more)

Subjects/Keywords: Optimization; Crosslinking; Plasticization; Hollow fibers; Membrane separation; Gas separation membranes; Membranes (Technology); Gases Separation; Separation (Technology)

…the intrinsic membrane material separation efficiency. For a given pair of pure gases, if… …conditions for xlp2 �� ..52 Table 4.3: Pure gas separation properties of uncrosslinked… …separation properties of uncrosslinked CM5 fibers �� 66 Table 4.7: Hollow fiber spinning dope… …68 Table 4.9: Pure gas separation properties of uncrosslinked CM8 fibers �� 69 Table… …separation properties of uncrosslinked CM9 fibers �� …..70 Table 4.12: Hollow fiber spinning…

10 more images…

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APA (6^th Edition):

Ma, C. (2011). Optimization of asymmetric hollow fiber membranes for natural gas separation. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/43700

Chicago Manual of Style (16^th Edition):

Ma, Canghai. “Optimization of asymmetric hollow fiber membranes for natural gas separation.” 2011. Masters Thesis, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/43700.

MLA Handbook (7^th Edition):

Ma, Canghai. “Optimization of asymmetric hollow fiber membranes for natural gas separation.” 2011. Web. 15 Sep 2019.

Vancouver:

Ma C. Optimization of asymmetric hollow fiber membranes for natural gas separation. [Internet] [Masters thesis]. Georgia Tech; 2011. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/43700.

Council of Science Editors:

Ma C. Optimization of asymmetric hollow fiber membranes for natural gas separation. [Masters Thesis]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/43700

Virginia Tech

29. Wright, George Todd. Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases.

Degree: PhD, Mechanical Engineering, 1979, Virginia Tech

URL: http://hdl.handle.net/10919/54764

Subjects/Keywords: LD5655.V856 1979.W74; Combustion gases; Gases – Separation; Molecular sieves; Zeolites; Coal – Sulfur content; Sulfur dioxide; Separation (Technology)

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APA (6^th Edition):

Wright, G. T. (1979). Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/54764

Chicago Manual of Style (16^th Edition):

Wright, George Todd. “Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases.” 1979. Doctoral Dissertation, Virginia Tech. Accessed September 15, 2019. http://hdl.handle.net/10919/54764.

MLA Handbook (7^th Edition):

Wright, George Todd. “Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases.” 1979. Web. 15 Sep 2019.

Vancouver:

Wright GT. Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases. [Internet] [Doctoral dissertation]. Virginia Tech; 1979. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/10919/54764.

Council of Science Editors:

Wright GT. Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases. [Doctoral Dissertation]. Virginia Tech; 1979. Available from: http://hdl.handle.net/10919/54764

30. Chen, Chien-Chiang. Thermally crosslinked polyimide hollow fiber membranes for natural gas purification.

Degree: PhD, Chemical Engineering, 2011, Georgia Tech

URL: http://hdl.handle.net/1853/45848

► Robust industrially relevant membranes for CO₂ removal from aggressive natural gas feed streams were developed and characterized. Asymmetric hollow fiber membranes with defect-free selective skin… (more)

Subjects/Keywords: Membrane; Gas separation; Polyimide; Crosslinked polymer; Natural gas; Hollow fiber; Gases Purification; Gases Separation; Separation (Technology); Membranes (Technology)

…7 Table 2.1: Kinetic diameters and critical temperatures for gases used in this work… …Figure 1.3: Schematics of major types of modules used for gas separation applications and… …the largest industrial membrane gas separation applications. High energy efficiency, low… …maintain attractive separation performance under realistic operating conditions and durability… …xv CHAPTER 1 INTRODUCTION 1.1 Membrane technology Separation processes can represent 40…

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APA (6^th Edition):

Chen, C. (2011). Thermally crosslinked polyimide hollow fiber membranes for natural gas purification. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/45848

Chicago Manual of Style (16^th Edition):

Chen, Chien-Chiang. “Thermally crosslinked polyimide hollow fiber membranes for natural gas purification.” 2011. Doctoral Dissertation, Georgia Tech. Accessed September 15, 2019. http://hdl.handle.net/1853/45848.

MLA Handbook (7^th Edition):

Chen, Chien-Chiang. “Thermally crosslinked polyimide hollow fiber membranes for natural gas purification.” 2011. Web. 15 Sep 2019.

Vancouver:

Chen C. Thermally crosslinked polyimide hollow fiber membranes for natural gas purification. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2019 Sep 15]. Available from: http://hdl.handle.net/1853/45848.

Council of Science Editors:

Chen C. Thermally crosslinked polyimide hollow fiber membranes for natural gas purification. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/45848

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