subject:(Sorption)

Texas A&M University

1. Roberts, Kimberly Ann. The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2798

► The fate of actinides in the environment is of interest for a several reasons. In oceanic surface waters actinides such as thorium and protactinium, and… (more)

▼ The fate of actinides in the environment is of interest for a several reasons. In oceanic surface waters actinides such as thorium and protactinium, and in particular their ratio, are used as tracers of processes such as boundary scavenging and paleocirculation. Thorium is also used to estimate residence times and particle and colloid fluxes from the euphotic zone, which is useful in global carbon budgets used to assess effects of global warming. Terrestrially, contaminated areas in need of remediation, such as former nuclear weapons production facilities, remain as repositories for no longer needed actinide stockpiles or waste by-products such as plutonium. All three of these actinides: thorium, protactinium, and plutonium are known to be particle-reactive but the extent to which they sorb to immobile particles and mobile colloids can vary with environmental conditions. Understanding controls on adsorption is important in understanding uses and any limitations of these radioactive tracers caused by colloids. Often laboratory studies to understand actinide behavior are conducted at concentrations (micro- to millimolar), which are orders of magnitude higher than they are found in the environment (femto- to picomolar). Colloids, a size class of particles operationally defined as 1 nm to 1 ?m in size, are ubiquitous in aquatic systems. The effect colloids have on actinide particle association, i.e. competitive or enhancing, can have a profound influence on the ultimate behavior of the actinide. The overall aim of this study is to assess sorption of thorium, protactinium and plutonium onto silica particles as a proxy for inorganic particles found in surface or ocean waters. In addition to the binary system of actinide/silica, the ternary system actinide/ organic colloid/ silica were also carried out to determine the affect of the organic colloid has on particle association. In particular, extracellular polymeric substances (EPS) extracted from laboratory grown bacteria and phytoplankton cultures were utilized as they too are ubiquitous in aquatic systems and have shown to strongly complex actinide ions, with EPS involved in oceanic scavenging of Th, as well as immobilization/mobilization of Pu in contaminated areas on land. Advisors/Committee Members: Santschi, Peter H (advisor), Amon, Rainer (committee member), Cifuentes, Luis (committee member), Herbert, Bruce (committee member), Honeyman, Bruce D. (committee member).

Subjects/Keywords: actinide; sorption

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APA (6^th Edition):

Roberts, K. A. (2009). The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2798

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):

Roberts, Kimberly Ann. “The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase.” 2009. Thesis, Texas A&M University. Accessed February 24, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-2798.

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

MLA Handbook (7^th Edition):

Roberts, Kimberly Ann. “The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase.” 2009. Web. 24 Feb 2020.

Vancouver:

Roberts KA. The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2798.

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

Council of Science Editors:

Roberts KA. The sorption of thorium, protacintium and plutonium onto silica particles in the presence of a colloidal third phase. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2798

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

University of Waterloo

2. Lai, Shuixiu. Sorptive separation of phenolic compounds from wastewater.

Degree: 2017, University of Waterloo

URL: http://hdl.handle.net/10012/11813

► This study explores the potential of using PEBA as a sorbent for removing phenolic compounds from wastewater. The sorption isotherms of phenol, 4-chlorophenol (4-CP), 4-nitrophenol… (more)

▼ This study explores the potential of using PEBA as a sorbent for removing phenolic compounds from wastewater. The sorption isotherms of phenol, 4-chlorophenol (4-CP), 4-nitrophenol (4-NP), 4-methylphenol (4-MP) and catechol from their respective single solute solutions were studied based on the Linear, Langmuir and Freundlich models. The Freundlich model was shown to be suitable to represent the equilibrium sorption of all the phenolic compounds in the PEBA sorbent, and the sorption capacity of these phenolic compounds in PEBA is in the order: catechol<phenol<4-MP<4-NP<4-CP. Thermodynamic analysis revealed that phenol sorption in PEBA was a spontaneous exothermic process. The sorption kinetics was studied using PEBA sorbent in the form of a flat membrane with well-defined dimensions to help identify the mechanism and rate controlling step of the sorption process. The kinetic data were fitted with the pseudo-first and -second order models as well as the diffusion model. The pseudo-second order model was shown to fit the experimental data better than the pseudo-first order model, and an oversight in the model fitting with regard to equilibrium sorption capacity in prior work was discussed and corrected. Sorption of phenol, 4-CP, 4-NP, 4-MP and catechol in PEBA was represented by the pseudo-second order model, while mass diffusion inside the sorbent was not negligible for thick membranes. Multi-solute sorption isotherms and kinetics were determined for binary and quinary solute systems. The competitive Freundlich model and the IAST model were fitted to the equilibrium data. It was found that the competitive Freundlich model was adequate to represent isotherms for all binary solute systems studied; however, there was a considerable deviation between the model predictions and the experimental data in the quinary solute system. Strongly sorbed solutes tended to inhibit the sorption of weakly sorbed solutes. The sorption competition was shown to affect the sorption kinetics of individual solutes, and such effect was found to be related to the molecular size of the sorbate component and its affinity to the sorbent. Chemical elution, thermal regeneration and vacuum-assisted thermal regeneration were proposed and studied for regeneration of PEBA sorbent exhausted with the phenolic compounds. Ethanol, methanol and NaOH solution were all effective regenerants for the sorbent, and no significant change in the sorption characteristics was observed for a number of sorption-regeneration cycles. Thermal regeneration (90°C for 2 h) was also effective for regenerating PEBA exhausted with phenol and 4-MP. When exhausted with 4-MP, the PEBA sorbent could be regenerated using vacuum-assisted thermal regeneration (80°C for 3 h at a vacuum pressure of 5 kPa), and highly concentrated solutions (≈70,000 ppm) of 4-MP were collected. PEBA fibres were prepared and immobilized in a packed-bed for column sorption studies. The effects of inlet feed concentration, flow rate, fibre diameter and flow interruption on the breakthrough…

Subjects/Keywords: PEBA; phenolic compounds; sorption isotherms; sorption kinetics; packed-bed sorption; regeneration; multi-solute sorption

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APA (6^th Edition):

Lai, S. (2017). Sorptive separation of phenolic compounds from wastewater. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/11813

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):

Lai, Shuixiu. “Sorptive separation of phenolic compounds from wastewater.” 2017. Thesis, University of Waterloo. Accessed February 24, 2020. http://hdl.handle.net/10012/11813.

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

MLA Handbook (7^th Edition):

Lai, Shuixiu. “Sorptive separation of phenolic compounds from wastewater.” 2017. Web. 24 Feb 2020.

Vancouver:

Lai S. Sorptive separation of phenolic compounds from wastewater. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/10012/11813.

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

Council of Science Editors:

Lai S. Sorptive separation of phenolic compounds from wastewater. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/11813

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

Virginia Tech

3. Fahrenfeld, Nicole Leah. Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments.

Degree: PhD, Civil Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/37811

► The nitroaromatic explosive 2,4,6-trinitrotoluene is a widespread, toxic groundwater contaminant. The objective of this work was to describe TNT fate in contaminated aquifer sediments. A… (more)

▼ The nitroaromatic explosive 2,4,6-trinitrotoluene is a widespread, toxic groundwater contaminant. The objective of this work was to describe TNT fate in contaminated aquifer sediments. A series of bench scale experiments and model simulations were performed to evaluate the fate of TNT in historically contaminated aquifer sediments. A TNT contaminated site on the National Priorities List, Former Nansemond Ordnance Depot (FNOD), Suffolk, VA, served as the model site for this work. To describe desorption rate in contaminated sediments, two approaches for a first order single-site desorption were evaluated. In Model 1, the driving force for desorption is mathematically related to the sorbed phase concentrations, whereas in Model 2 the rate is based on aqueous phase concentrations. Two data sets were used to evaluate the models: (1) batch draw-and-fill experiments using FNOD sediment and (2) results from a previously published report from the Louisiana Army Ammunition Plant. Both models provided adequate fit, but Model 2 was better behaved and first order parameters fell within a smaller confidence interval. Draw-and-fill experiments were observed to yield first-order mass transfer coefficients well aligned with those derived from column experiments. The effect of organic amendments on anaerobic TNT degradation rate and microbial community structure in culture enriched from the FNOD site was studied in batch anaerobic microcosms. TNT readily degraded under all experimental conditions. A reductive pathway of TNT degradation was observed across all conditions, however, denaturing gradient gel electrophoresis (DGGE) analysis revealed distinct bacterial community compositions. In all microcosms, Gram-negative γ- or β-Proteobacteria and Gram-positive Negativicutes or Clostridia were observed. According to non-metric multidimensional scaling analysis of DGGE profiles, the microcosm communities were most similar to field site sediment corresponding to the highest TNT concentration, relative to moderately and uncontaminated sediments, suggesting that TNT contamination itself is a major driver of microbial community structure. Candidate degraders were identified and a Pseudomonas sp. was observed to be stimulated under all conditions, which was confirmed to rapidly degrade TNT in pure culture. Mathematical modeling of the batch microcosm results revealed that TNT degraded 1.7 times faster in lactate amended microcosms than in ethanol amended microcosms, which degraded 3.0 times faster than natural organic matter amended microcosms. Simulation of the TNT degradation pathway included determination of branching coefficients representing whether the first reduction of nitro group occurred in the ortho or para position or whether TNT was removed from the aqueous phase (i.e. bound to dissolved organic matter). Branching coefficients were greater for initial reduction of para (17-27% initial TNT concentration) over ortho (3-9% initial TNT concentration) for all test conditions. However, a greater degradate recovery and a different… Advisors/Committee Members: Schreiber, Madeline E. (committee member), Vikesland, Peter J. (committee member), Widdowson, Mark A. (committeecochair), Pruden-Bagchi, Amy Jill (committeecochair).

Subjects/Keywords: sorption; bioremediation; TNT

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APA (6^th Edition):

Fahrenfeld, N. L. (2012). Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/37811

Chicago Manual of Style (16^th Edition):

Fahrenfeld, Nicole Leah. “Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments.” 2012. Doctoral Dissertation, Virginia Tech. Accessed February 24, 2020. http://hdl.handle.net/10919/37811.

MLA Handbook (7^th Edition):

Fahrenfeld, Nicole Leah. “Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments.” 2012. Web. 24 Feb 2020.

Vancouver:

Fahrenfeld NL. Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/10919/37811.

Council of Science Editors:

Fahrenfeld NL. Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/37811

University of Auckland

4. Song, Yantao. Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system.

Degree: 2009, University of Auckland

URL: http://hdl.handle.net/2292/5229

► Trace metal speciation in aquatic environments is inherently complex due to the large number of possible interactions with dissolved and particulate components. Adsorption onto iron… (more)

▼ Trace metal speciation in aquatic environments is inherently complex due to the large number of possible interactions with dissolved and particulate components. Adsorption onto iron oxyhydroxide and bacterial surfaces, as well as the formation of metal-ligand complexes can play important roles in controlling the fate and transport of trace metals in natural environments. The objective of this study is to describe and understand metal speciation and distribution in a complex biogeochemical system by incrementally increasing the complexity from simple binary systems to a dynamic quaternary system containing a trace metal, iron oxide and bacteria that are active and metabolizing an organic ligand. Copper, cadmium, and phthalic acid (H2Lp) adsorption onto ferrihydrite in binary systems was well reproduced using the diffuse layer model (DLM). The adsorption of H2Lp adsorption was analogous to that of inorganic diprotic acids in terms of the relationship between the adsorption constants and acidity constants. In ternary systems H2Lp caused Cu2+ or Cd2+ adsorption to be either enhanced (due to surface ternary complex formation) or inhibited (due to solution complex formation) depending on the conditions. The DLM could only describe the effect of H2Lp on metal ion sorption by including ternary complexes of the form ???FeOHMLp (0), where ???FeOH is a surface site and M is Cu or Cd. The relationship between binary metal adsorption constants and the ternary complex adsorption constants from this and previous studies suggest several properties of ternary complexes. First, ternary complex structures on both ferrihydrite and goethite are either the same or similar. Second, those cations having large adsorption constants also have large equilibrium constants for ternary complex formation. Third, ligands forming stronger solution complexes with cations will also form stronger surface ternary complexes but because of the strong solution complexes these ligands will not necessarily enhance cation adsorption. The bacterial strain Comamonas spp. was isolated from the activated sludge of a wastewater treatment plant. Comamonas spp. could effectively degrade H2Lp in the presence of Cd2+ and ferrihydrite and was therefore chosen to study the effect of H2Lp degradation on Cd2+ speciation. Proton, cadmium and H2Lp adsorption onto Comamonas spp. were measured. The Comamonas spp. titration curve is flatter than that of ferrihydrite, indicating a higher degree of site heterogeneity at the bacterial surface. Adsorption edges of Cd2+ adsorption onto Comamonas spp. occurred over about 4~5 pH units compared to those of ferrihydrite which occurred over ??? 2 pH units on a dry weight basis. Comamonas spp. can accumulate a larger amount of Cd2+ than ferrihydrite especially under lower pH conditions. Proton and Cd2+ adsorption onto Comamonas spp. cells over a wide sorbent/sorbate and pH range was reasonably well described by a four site non-electrostatic model. The acid-base and Cd2+ adsorption behaviour of Comamonas… Advisors/Committee Members: Dr Naresh Singhal, Dr Peter James Swedlund, Dr Simon Swift.

Subjects/Keywords: Trace Metal; Bacteria; Ferrihydrite; Sorption

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APA (6^th Edition):

Song, Y. (2009). Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system. (Doctoral Dissertation). University of Auckland. Retrieved from http://hdl.handle.net/2292/5229

Chicago Manual of Style (16^th Edition):

Song, Yantao. “Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system.” 2009. Doctoral Dissertation, University of Auckland. Accessed February 24, 2020. http://hdl.handle.net/2292/5229.

MLA Handbook (7^th Edition):

Song, Yantao. “Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system.” 2009. Web. 24 Feb 2020.

Vancouver:

Song Y. Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system. [Internet] [Doctoral dissertation]. University of Auckland; 2009. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/2292/5229.

Council of Science Editors:

Song Y. Trace metal speciation in complex aquatic environments : the copper, cadmium, ferrihydrite, phthalic acid and bacterial system. [Doctoral Dissertation]. University of Auckland; 2009. Available from: http://hdl.handle.net/2292/5229

Texas A&M University

5. Song, Jin Kun. Arsenic removal and stabilization by synthesized pyrite.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-3141

► Arsenic is ubiquitous whether it is naturally occurring or produced by humans. It is found at sites on the National Priority List and at sites… (more)

▼ Arsenic is ubiquitous whether it is naturally occurring or produced by humans. It is found at sites on the National Priority List and at sites operated by DOE, where it is the second most commonly found contaminant. More wastes containing arsenic will be produced due to the lowering of the Maximum Contaminant Level (MCL) for arsenic in drinking water which will result in more treatment facilities for arsenic removal that will generate residuals. Furthermore, arsenic can be released from such wastes under the reduced conditions that are found in landfills. Pyrite (FeS2) is believed to be a compound that has a high affinity for arsenic and is stable under anoxic conditions. The first task of this research was to develop a method for making pyrite crystals of defined size with minimal reaction time and at high yield. Effects on the synthesis of pyrite particles of pH, the ratio of Fe/S, temperature and reaction time were investigated in batch reactor systems. Pyrite was synthesized within 24 hours at pH values ranging from pH 3.6 through pH 5.6, and at a ratio of Fe/S of 0.5. X-ray diffraction and scanning electron microscopy were used to size and characterize the pyrite particles. Experimental and analytical procedures developed for this work, included a hydride generation atomic absorption spectrometry method for measuring arsenic species (As(III), As(V)). The synthesized pyrite was applied to remove arsenic and its maximum capacity for arsenic removal was measured in batch adsorption experiments to be 3.23 ?mol/g for As(III) and 113 ?mol/g for As(V). Information obtained on the characteristics of chemical species before and after the reaction with arsenic showed that iron and sulfur were oxidized. Last, how strongly arsenic was bound to pyrite was investigated and it was determined that release of arsenic from As(III)-pyrite is not affected by pH, but release from As(V)-pyrite is affected by pH with minimum release in the range pH 5 to pH 8. Advisors/Committee Members: Batchelor, Bill (advisor), Autenrieth, Robin (committee member), Herbert, Bruce (committee member), Loeppert, Richard (committee member).

Subjects/Keywords: Arsenic Removal; Pyrite; Sorption; Stabilization

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APA (6^th Edition):

Song, J. K. (2009). Arsenic removal and stabilization by synthesized pyrite. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-3141

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):

Song, Jin Kun. “Arsenic removal and stabilization by synthesized pyrite.” 2009. Thesis, Texas A&M University. Accessed February 24, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-3141.

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

MLA Handbook (7^th Edition):

Song, Jin Kun. “Arsenic removal and stabilization by synthesized pyrite.” 2009. Web. 24 Feb 2020.

Vancouver:

Song JK. Arsenic removal and stabilization by synthesized pyrite. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3141.

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

Council of Science Editors:

Song JK. Arsenic removal and stabilization by synthesized pyrite. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3141

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

Stony Brook University

6. Lorenz, Emily Ann. Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study .

Degree: 2009, Stony Brook University

URL: http://hdl.handle.net/1951/52248

Subjects/Keywords: Tungstate sorption

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APA (6^th Edition):

Lorenz, E. A. (2009). Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study . (Thesis). Stony Brook University. Retrieved from http://hdl.handle.net/1951/52248

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):

Lorenz, Emily Ann. “Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study .” 2009. Thesis, Stony Brook University. Accessed February 24, 2020. http://hdl.handle.net/1951/52248.

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

MLA Handbook (7^th Edition):

Lorenz, Emily Ann. “Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study .” 2009. Web. 24 Feb 2020.

Vancouver:

Lorenz EA. Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study . [Internet] [Thesis]. Stony Brook University; 2009. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/1951/52248.

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

Council of Science Editors:

Lorenz EA. Role of Speciation in Tungstate Sorption on Iron Oxyhydroxides: A Spectroscopic Study . [Thesis]. Stony Brook University; 2009. Available from: http://hdl.handle.net/1951/52248

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

University of Minnesota

7. Chen, Dabing. Hygroscopicity of pharmaceutical crystals.

Degree: PhD, Pharmaceutics, 2009, University of Minnesota

URL: http://purl.umn.edu/47878

► The active pharmaceutical ingredients (APIs) as well as excipients in a solid dosage form can take up water vapor both during manufacture and subsequent storage… (more)

Subjects/Keywords: Hygroscopicity; Pharmaceutical; Sorption; Water; Pharmaceutics

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APA (6^th Edition):

Chen, D. (2009). Hygroscopicity of pharmaceutical crystals. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/47878

Chicago Manual of Style (16^th Edition):

Chen, Dabing. “Hygroscopicity of pharmaceutical crystals.” 2009. Doctoral Dissertation, University of Minnesota. Accessed February 24, 2020. http://purl.umn.edu/47878.

MLA Handbook (7^th Edition):

Chen, Dabing. “Hygroscopicity of pharmaceutical crystals.” 2009. Web. 24 Feb 2020.

Vancouver:

Chen D. Hygroscopicity of pharmaceutical crystals. [Internet] [Doctoral dissertation]. University of Minnesota; 2009. [cited 2020 Feb 24]. Available from: http://purl.umn.edu/47878.

Council of Science Editors:

Chen D. Hygroscopicity of pharmaceutical crystals. [Doctoral Dissertation]. University of Minnesota; 2009. Available from: http://purl.umn.edu/47878

Ruhr Universität Bochum

8. Tanner, Lukas. Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase.

Degree: 2011, Ruhr Universität Bochum

URL: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-34824

► Zur Erhöhung der Produktqualität von Leuchtmitteln ist es erforderlich, Schutzgas für Handschuh-Kästen, s.g. Gloveboxen, mit hoher Reinheit bereitzustellen. Da das Schutzgas wiederverwendet werden muss, wird… (more)

Subjects/Keywords: Sorption; Gasreinigung; Argon; Wasser; Sauerstoff

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APA (6^th Edition):

Tanner, L. (2011). Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase. (Thesis). Ruhr Universität Bochum. Retrieved from http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-34824

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):

Tanner, Lukas. “Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase.” 2011. Thesis, Ruhr Universität Bochum. Accessed February 24, 2020. http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-34824.

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

MLA Handbook (7^th Edition):

Tanner, Lukas. “Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase.” 2011. Web. 24 Feb 2020.

Vancouver:

Tanner L. Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase. [Internet] [Thesis]. Ruhr Universität Bochum; 2011. [cited 2020 Feb 24]. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-34824.

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

Council of Science Editors:

Tanner L. Optimierung von Sorptionsvorgängen bei Feinreinigung inerter Schutzgase. [Thesis]. Ruhr Universität Bochum; 2011. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-34824

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

Ruhr Universität Bochum

9. Rother, Jens. Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase.

Degree: 2012, Ruhr Universität Bochum

URL: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-36671

► Ziel dieser Arbeit war die systematische Untersuchung diverser Sorbentien für die Beurteilung der Reinigung wasserstoffhaltiger und biogener Gase. Zu diesem Zweck wurde eine volumetrische Multiprobenapparatur… (more)

Subjects/Keywords: Sorption; Biogas; Magnetschwebewaage; Aktivkohle; Gasgemisch

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APA (6^th Edition):

Rother, J. (2012). Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase. (Thesis). Ruhr Universität Bochum. Retrieved from http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-36671

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):

Rother, Jens. “Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase.” 2012. Thesis, Ruhr Universität Bochum. Accessed February 24, 2020. http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-36671.

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

MLA Handbook (7^th Edition):

Rother, Jens. “Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase.” 2012. Web. 24 Feb 2020.

Vancouver:

Rother J. Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase. [Internet] [Thesis]. Ruhr Universität Bochum; 2012. [cited 2020 Feb 24]. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-36671.

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

Council of Science Editors:

Rother J. Systematische Untersuchung von festen und flüssigen Sorbentien für die Reinigung wasserstoffhaltiger und biogener Gase. [Thesis]. Ruhr Universität Bochum; 2012. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-36671

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

Penn State University

10. Rausch, Justin Lee. STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS.

Degree: MS, Chemical Engineering, 2009, Penn State University

URL: https://etda.libraries.psu.edu/catalog/9609

► Crystallinity is an important factor in the diffusivity and solubility of a polymer-solvent system. The melt temperature acts as the transition point between a semi-crystalline… (more)

Subjects/Keywords: Diffusivity; Gravimetric Sorption; Solubility

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

APA (6^th Edition):

Rausch, J. L. (2009). STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/9609

Chicago Manual of Style (16^th Edition):

Rausch, Justin Lee. “STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS.” 2009. Masters Thesis, Penn State University. Accessed February 24, 2020. https://etda.libraries.psu.edu/catalog/9609.

MLA Handbook (7^th Edition):

Rausch, Justin Lee. “STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS.” 2009. Web. 24 Feb 2020.

Vancouver:

Rausch JL. STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS. [Internet] [Masters thesis]. Penn State University; 2009. [cited 2020 Feb 24]. Available from: https://etda.libraries.psu.edu/catalog/9609.

Council of Science Editors:

Rausch JL. STUDY OF THE DIFFUSION AND SOLUBILITY FOR A POLYETHYLENE-CYCLOHEXANE SYSTEM USING GRAVIMETRIC SORPTION ANALYSIS. [Masters Thesis]. Penn State University; 2009. Available from: https://etda.libraries.psu.edu/catalog/9609

Louisiana State University

11. Conkle, Jeremy Landon. Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes.

Degree: PhD, Oceanography and Atmospheric Sciences and Meteorology, 2010, Louisiana State University

URL: etd-03252010-094110 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3671

► active compounds (PhACs) have been detected in the aquatic environment as a result of loading from various sources. In Louisiana, USA, many municipalities treat wastewater… (more)

▼ active compounds (PhACs) have been detected in the aquatic environment as a result of loading from various sources. In Louisiana, USA, many municipalities treat wastewater using natural systems, such as lagoons and wetlands, rather than using conventional wastewater treatment technologies and may discharge PhACs into the environment. These treatment systems are not designed to remove PhACs from wastewater, nor is it currently a regulatory requirement. Research on the fate of PhACs in the environment is needed to understand impacts on Louisiana’s important coastal system. Wastewater sampling for PhACs at the Mandeville, LA wastewater treatment plant (WWTP) determined that this system significantly reduces the concentrations of PhACs prior to discharge into the environment. Most of the concentration reduction occurred in the first phase of treatment, where research suggests sorption may have been the major removal pathway. A wetland soil similar to the forested wetland at the Mandeville WWTP was tested for sorption and desorption of ciprofloxacin, ofloxacin and norfloxacin. Two HPLC methods were developed for compound analyses in this experiment. It was determined that sorption to wetland soil is a major and potentially long-term removal pathway for these pharmaceutical compounds from wastewater. The presence of antibiotics in the environment may have the ability to alter the microbial community in soils. We observed the greatest effect of antibiotics on soil microbial respiration followed this trend: sulfamethoxazole>ciprofloxacin>tetracycline. Most antibiotic effects were seen in the mineral, not the peat soil. Suppression of microbial respiration was observed, at low or high concentrations, depending on the antibiotic and soil examined. This result indicates that antibiotics can have negative impacts on microbial functions in treatment wetlands at “environmentally relevant” concentrations. Based on the findings of these studies, WWTPs systems similar to the Mandeville plant are effective at reducing the concentrations of many PhACs discharged into surface waters. Furthermore, sorption appears to be a major pathway for this concentration reduction. However, antibiotics showed the potential to exhibit a negative influence on microbial activity in wetland soil. These natural treatment systems appear to be ideal for effectively treating PhACs in surface waters.

Subjects/Keywords: microbial respiration; antibiotics; wastewater; sorption

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

APA (6^th Edition):

Conkle, J. L. (2010). Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-03252010-094110 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3671

Chicago Manual of Style (16^th Edition):

Conkle, Jeremy Landon. “Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes.” 2010. Doctoral Dissertation, Louisiana State University. Accessed February 24, 2020. etd-03252010-094110 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3671.

MLA Handbook (7^th Edition):

Conkle, Jeremy Landon. “Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes.” 2010. Web. 24 Feb 2020.

Vancouver:

Conkle JL. Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes. [Internet] [Doctoral dissertation]. Louisiana State University; 2010. [cited 2020 Feb 24]. Available from: etd-03252010-094110 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3671.

Council of Science Editors:

Conkle JL. Pharmaceutical compounds in treatment wetlands: potential removal and effects on microbial processes. [Doctoral Dissertation]. Louisiana State University; 2010. Available from: etd-03252010-094110 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3671

University of Saskatchewan

12. Karoyo, Abdalla. Structural studies of supramolecular host-guest systems.

Degree: 2015, University of Saskatchewan

URL: http://hdl.handle.net/10388/ETD-2015-05-1835

► Abstract This research work details a systematic study of the structure and function of supramolecular host-guest systems. Host-guest inclusion complexes were formed between β-Cyclodextrin (β-CD)… (more)

▼ Abstract This research work details a systematic study of the structure and function of supramolecular host-guest systems. Host-guest inclusion complexes were formed between β-Cyclodextrin (β-CD) and its copolymers (as hosts), with several types of guest molecules both in aqueous solution and the solid state. The research is divided into two themes; (1) structural characterization and dynamic properties of the inclusion compounds of β-CD with various guest systems in aqueous solution and the solid phase, and (2) heterogeneous adsorption and structural studies of β-CD based copolymers with various guest systems in aqueous solutions. The guest systems include alkyl and perfluoroalkyl carboxylates, perfluoroalkyl sulfonate, and p-nitrophenol (PNP) at variable experimental conditions. In the first theme (chapter 2-5), host-guest complexes in the solid state were prepared using dissolution and slow cool methods at variable host/guest mole ratios (i.e., 1:1 and 2:1). The complexes were further characterized using 19F/13C DP/MAS and CP/MAS solid-state NMR spectroscopy. The solution state complexes were prepared in D2O for structural characterization using 1H/19F NMR spectroscopy. The NMR studies were complemented using FT-IR, thermal analyses (DSC, and TGA), and powder X-ray diffraction (PXRD). Evidence for the formation of host-guest inclusion compounds (ICs) was provided using CP/MAS solids NMR spectroscopy and complexation-induced chemical shift (CIS) values of 1H/19F nuclei in aqueous solution. The β-CD/PFC ICs displayed variable guest geometry and hydration states as determined by the host-guest stoichiometry and the conformation of the guest. PFOA and SPFO form 1:1 and 2:1 ICs with β-CD, wherein the guest adopts a range of gauche and trans conformations, respectively. 1:1 host-guest complexes were concluded for short perfluorocarbon chains (i.e., PFBA) where the gauche conformation of the PFC guest in the bound state was favoured. In the second theme (chapters 6–8), β-CD based copolymers were used as host materials. The structural characterization of a soluble poly-CD material (known as HDI-1) revealed that the solution behaviour of such polymeric hosts are sensitive to the presence of guest compounds such as p-nitrophenol (PNP) (i.e. chemo-responsive), as well as temperature variations (i.e. thermo-responsive). The host-guest chemistry of the soluble poly-CD material, as studied by 2-D solution NMR and induced circular dichroism (ICD) spectroscopy, indicates that PNP was bound within the cavity sites of β-CD and the interstitial domains of the copolymer (cf. Scheme 1.6 and chapter 6). The observed responsive nature of such polymeric host materials to temperature variation and chemical potential resembles behaviour characteristic of ‘smart materials’. Herein, ‘smart materials’ refer to systems which are responsive to external stimuli (e.g. temperature and chemical). The adsorption properties of the soluble (HDI-1) and insoluble (HDI-3 and -6) poly-CD adsorbents with octyl and perfluorooctyl carboxylate and… Advisors/Committee Members: Wilson, Lee D., Hazendonk, Paul, Reid, Steven, Bowles, Richard, Dmitriev, Oleig.

Subjects/Keywords: Cyclodextrin; host-guest complex; sorption

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

APA (6^th Edition):

Karoyo, A. (2015). Structural studies of supramolecular host-guest systems. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2015-05-1835

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):

Karoyo, Abdalla. “Structural studies of supramolecular host-guest systems.” 2015. Thesis, University of Saskatchewan. Accessed February 24, 2020. http://hdl.handle.net/10388/ETD-2015-05-1835.

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

MLA Handbook (7^th Edition):

Karoyo, Abdalla. “Structural studies of supramolecular host-guest systems.” 2015. Web. 24 Feb 2020.

Vancouver:

Karoyo A. Structural studies of supramolecular host-guest systems. [Internet] [Thesis]. University of Saskatchewan; 2015. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/10388/ETD-2015-05-1835.

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

Council of Science Editors:

Karoyo A. Structural studies of supramolecular host-guest systems. [Thesis]. University of Saskatchewan; 2015. Available from: http://hdl.handle.net/10388/ETD-2015-05-1835

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

University of the Western Cape

13. Engelbrecht, Magdalena Aletta. Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer .

Degree: 2010, University of the Western Cape

URL: http://hdl.handle.net/11394/3437

► Objectives:Substances leaching from denture- base polymers have been associated with cytotoxicity and allergic reactions. This study examined the effect of polishing,mixing ratios, water immersion temperatures… (more)

▼ Objectives:Substances leaching from denture- base polymers have been associated with cytotoxicity and allergic reactions. This study examined the effect of polishing,mixing ratios, water immersion temperatures and different thicknesses on the sorption and solubility of a heat-polymerized, denture-base polymer. The effect of different water immersion temperatures on the flexural strength of the denture base, was tested as well. The next component of this study, is the testing of the most significant sorption and solubility findings on in vitro cell viability. Materials and Methods:Disc shaped specimens from a heat-polymerized, denture-base polymer (Vertex®) were prepared, based on ISO 1567 specifications for sorption and solubility testing, following the manufacturers’ instructions. The following tests were performed: 1) Sorption and solubility of two groups (n = 12 each) of polished and unpolished discs were established and compared by means of the Mixed procedure; 2) Sorption and solubility of three groups (n = 12 each) with different mixing ratios were compared by means of the Mixed procedure; 3) Four groups (n = 14 each) were immersed in water at different temperatures, sorption and solubility were compared by means of pairwise comparison and the Median test; 4) Specimens with different thicknesses (n = 36) were compared, again, by means of pairwise comparison and the Median test; 5) To test the influence of different water-soaking temperatures on the flexural strength of the disc, strips were prepared from the disc used in test no. 3. The flexural strength was compared, by means of the Median test; 6) To test the influence of no postpolymerization treatment, polishing and water immersion on the cytotoxicity of mouse fibroblast cells, (n = 9) for each test group, were prepared. A preliminary test was performed beforehand, over a period of 24 hours, up to a maximum period of four weeks. The Balb/c 3T3 mouse fibroblast cells were cultured and incubated for 24 hours in Eagles medium. Eluates prepared from the disc and medium without any disc (control) replaced the medium. Cytotoxicity was assessed by MTT-assay. Optical density values were obtained at 24 and 48 hour intervals. The data was analyzed by means of the Means procedure.Results:In the entire thesis, the data was analyzed using SAS on a 0.01 probability level.Between polished and unpolished groups, no significant difference in water sorption (p> 0.01) was found, but there was a difference in solubility (p<0.01).Different mixing ratios did not alter sorption (p = 0.34) or solubility (p = 0.68).However, a difference (p<0.01) in sorption and solubility was found among the different temperature and thickness groups. Soaking the denture base in water at different temperatures did not alter its flexural strength (p = 0.48). Cell viability levels were noted in all the experimental groups in the MTT assay test. The analysis was a two-factor study, with one factor being the group, and the other, being time. The interaction between these factors was found to be… Advisors/Committee Members: Geerts, G.A.V.M (advisor).

Subjects/Keywords: Sorption; solubility; cytotoxicity; denture base

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APA (6^th Edition):

Engelbrecht, M. A. (2010). Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/3437

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):

Engelbrecht, Magdalena Aletta. “Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer .” 2010. Thesis, University of the Western Cape. Accessed February 24, 2020. http://hdl.handle.net/11394/3437.

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

MLA Handbook (7^th Edition):

Engelbrecht, Magdalena Aletta. “Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer .” 2010. Web. 24 Feb 2020.

Vancouver:

Engelbrecht MA. Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer . [Internet] [Thesis]. University of the Western Cape; 2010. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/11394/3437.

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

Council of Science Editors:

Engelbrecht MA. Factors influencing sorption, solubility and cytotoxicity of a heat cured denture base polymer . [Thesis]. University of the Western Cape; 2010. Available from: http://hdl.handle.net/11394/3437

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

INP Toulouse

14. Charrière, Delphine. Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams.

Degree: Docteur es, Science des Agroressources, 2009, INP Toulouse

URL: http://www.theses.fr/2009INPT026G

►

La sorption de CO2 et de CH4 dans des charbons a été caractérisée au laboratoire afin d'étudier la faisabilité du stockage géologique de CO2 dans… (more)

▼

La sorption de CO2 et de CH4 dans des charbons a été caractérisée au laboratoire afin d'étudier la faisabilité du stockage géologique de CO2 dans les veines de charbon. La diffusion et la sorption de CO2 et de CH4 sur des charbons du bassin de Lorraine et du bassin de Gardanne ont été étudiées par une méthode gravimétrique jusqu'à une pression de 5 MPa et pour des températures variant de 283 à 333 K. La cinétique de sorption dépend du gaz utilisé, de la granulométrie, de la pression en gaz et de la température. Elle peut être représentée par un modèle unipore basé sur la loi de Fick. Le coefficient de diffusion de CO2 dans le charbon est supérieur à celui du CH4 et est d'environ 10–12 m2 s–1, valeur de diffusion assez faible. A l'équilibre, la température, la pression, le gaz utilisé, la composition des charbons et la teneur en eau sont des paramètres qui influencent la capacité de sorption sur les charbons. Le charbon du bassin de Lorraine possède une plus grande capacité de sorption de CO2 (1,6 mmol g–1, soit ~ 36 m3 t–1) que celle du charbon du bassin de Gardanne. Le modèle de Dubinin-Astakhov basé sur un remplissage volumique des pores, rend mieux compte de la sorption de CO2 et CH4 que les modèles de Dubinin-Radushkevich et de Langmuir. Par ailleurs, les mécanismes de sorption de l'eau sur le charbon ont été mis en évidence, permettant de mieux interpréter l'influence de l'eau sur la capacité de sorption des gaz. A partir de l'ensemble des résultats, une évaluation des possibilités de stockage est discutée. Il en ressort la nécessité d'études complémentaires dans le but d'améliorer la perméabilité de la veine à l'échelle du site de stockage pour permettre une meilleure injectivité du gaz

The CO2 and CH4 sorption onto coals has been characterized in laboratory in order to study the feasibility of CO2 geological storage in coal seams. The diffusion and sorption of CO2 and CH4 on coals of Lorraine and Gardanne basins have been performed from a gravimetric method until a pressure of 5 MPa and for temperatures from 283 to 333 K. The kinetics of sorption depends on the nature of gas, the grain size of coal, the gas pressure and the temperature. It can be represented by a unipore model based on Fick's law. The CO2 diffusion coefficient on coal is higher than that of CH4 and is about 10–12 m2 s–1. At equilibrium, the temperature, pressure, nature of gas, composition of coal and water content are parameters that influence the sorption capacity of coals. The coal of Lorraine basin has a greater capacity for sorption of CO2 (1.6 mmol g–1, ~ 36 m3 t–1) than that of coal of Gardanne basin. The model of Dubinin-Astakhov based on a pore volume filling, has a best fit of sorption data that Dubinin-Radushkevich and Langmuir models. Finally, the different mechanisms of water sorption on coal have been identified and can better interpret the influence of moisture on the gas sorption capacity. From all results, an assessment of capacity storage is discussed. This indicates the need for further studies in order to improve the…

Advisors/Committee Members: Behra, Philippe (thesis director).

Subjects/Keywords: Charbon; Stockage; Géologique; CO2; Diffusion; Sorption; Porosité; Langmuir; Sorption de l’eau; Coal; Geological storage; CO2; Diffusion; Sorption; Porosity; Langmuir; Water sorption

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

APA (6^th Edition):

Charrière, D. (2009). Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams. (Doctoral Dissertation). INP Toulouse. Retrieved from http://www.theses.fr/2009INPT026G

Chicago Manual of Style (16^th Edition):

Charrière, Delphine. “Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams.” 2009. Doctoral Dissertation, INP Toulouse. Accessed February 24, 2020. http://www.theses.fr/2009INPT026G.

MLA Handbook (7^th Edition):

Charrière, Delphine. “Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams.” 2009. Web. 24 Feb 2020.

Vancouver:

Charrière D. Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams. [Internet] [Doctoral dissertation]. INP Toulouse; 2009. [cited 2020 Feb 24]. Available from: http://www.theses.fr/2009INPT026G.

Council of Science Editors:

Charrière D. Caractérisation de la sorption de gaz sur les charbons. Application au stockage géologique du dioxyde de carbone dans les veines de charbon : Characterisation of gas sorption on coals. Application of geological storage of CO2 on coal seams. [Doctoral Dissertation]. INP Toulouse; 2009. Available from: http://www.theses.fr/2009INPT026G

Virginia Tech

15. Bierlein, Kevin Andrew. Modeling Manganese Sorption and Surface Oxidation During Filtration.

Degree: MS, Environmental Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/32164

► Soluble manganese (Mn) is a common contaminant in drinking water sources. High levels of Mn can lead to aesthetic water quality problems, necessitating removal of… (more)

▼ Soluble manganese (Mn) is a common contaminant in drinking water sources. High levels of Mn can lead to aesthetic water quality problems, necessitating removal of Mn during treatment to minimize consumer complaints. Mn may be removed during granular media filtration by the â natural greensand effect,â in which soluble Mn adsorbs to manganese oxide-coated (MnOx(s)) media and is then oxidized by chlorine, forming more manganese oxide. This research builds on a previous model developed by Merkle et al. (1997) by either neglecting the empirically determined available fraction of sorption sites (referred to as the â simpleâ model), which took into account the fact that some adsorption sites in the porous media were inaccessible, or by explicitly accounting for the transport and reaction processes within the porous structure of the MnOx(s) coating (referred to as the â mechanisticâ model). Both models were applied to experimental data and used to evaluate the oxidation rate constant, which was the only unknown parameter. An inverse relationship between the fitted reaction rate constant and chlorine concentration was observed, showing that the oxidation reaction does not depend on chlorine concentration for the experimental conditions considered. In a sensitivity analysis, the adsorption isotherm and reaction rate were found to have the greatest impact on predicted Mn removal. The simple model should prove useful for designing contactor units for manganese removal, provided its limitations are clearly understood, while the mechanistic model should be able to resolve differences in the various types of oxide coating (internal porosity, surface area and coating thickness) and will allow a more fundamental and mechanistically-consistent evaluation of the appropriate form of the oxidation rate expression. However, further research is needed to more completely characterize the adsorption and reaction mechanisms over the range of conditions commonly encountered in water treatment plants. Advisors/Committee Members: Little, John C. (committeechair), Knocke, William R. (committee member), Tobiason, John E. (committee member).

Subjects/Keywords: manganese; filtration; oxidation; sorption

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

APA (6^th Edition):

Bierlein, K. A. (2012). Modeling Manganese Sorption and Surface Oxidation During Filtration. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/32164

Chicago Manual of Style (16^th Edition):

Bierlein, Kevin Andrew. “Modeling Manganese Sorption and Surface Oxidation During Filtration.” 2012. Masters Thesis, Virginia Tech. Accessed February 24, 2020. http://hdl.handle.net/10919/32164.

MLA Handbook (7^th Edition):

Bierlein, Kevin Andrew. “Modeling Manganese Sorption and Surface Oxidation During Filtration.” 2012. Web. 24 Feb 2020.

Vancouver:

Bierlein KA. Modeling Manganese Sorption and Surface Oxidation During Filtration. [Internet] [Masters thesis]. Virginia Tech; 2012. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/10919/32164.

Council of Science Editors:

Bierlein KA. Modeling Manganese Sorption and Surface Oxidation During Filtration. [Masters Thesis]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/32164

University of Ottawa

16. Zhu, Ying. Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added .

Degree: 2014, University of Ottawa

URL: http://hdl.handle.net/10393/31377

► Microconstituents (MCs) have become an emerging concern to scientists and researchers. Due to the development of analytical technology, it is now possible to study MCs… (more)

▼ Microconstituents (MCs) have become an emerging concern to scientists and researchers. Due to the development of analytical technology, it is now possible to study MCs at ηg/L to μg/L levels. Wastewater treatment plants (WWTPs) are the major point source for MCs entering the environment based on the literature. WWTPs are known to be unable to remove many MCs to a safe level. In order to fully understand the fate of MCs in WWTPs and to further improve the design of WWTPs in terms of MC removal, it is necessary to examine removal mechanisms such as sorption and biodegradation in WWTPs. Three MCs, bisphenol A (BPA), 17-α-ethinylestradiol (EE2) and triclosan (TCS), were chosen for this study. They are chemicals reported to be hydrophobic and have low vapor pressure, which makes sorption a highly potential removal mechanism. Primary sludge and activated sludge (AS) were used to perform sorption kinetics and isotherm experiments for BPA, EE2 and TCS. Primary sludge was collected from local WWTPs, and AS was generated from a lab-scale continuous flow bioreactor system maintained at solids retention times of 15, 10 and 5 d and hydraulic retention time (HRT) of 6 h. Alum was added to synthetic wastewater influent at concentrations typically used for phosphorus removal at some plants. Alum has the potential to change sludge structure and influence the sorption process. A comparison was made with AS as the adsorbent with and without alum addition to the AS to study the influence of alum on the sorption processes. The selected MCs were found to reach sorption equilibrium with primary sludge within 7 h. A pseudo second-order kinetic model was an excellent fit to describe the sorption processes of selected MCs. The solids-liquid partitioning coefficient (Kd) was determined for the three chosen MCs. The Kd values found for primary sludge and AS are very close. The Kd for MCs sorbed to AS in this study were compared with the Kd for AS without alum addition. Although alum addition showed no influence on effluent soluble chemical oxygen demand, it decreases the Kd for BPA and EE2 sorbed to AS. In contrast, a much higher Kd for TCS was observed for AS with alum addition. Judging from the R2 values, the linear sorption model is not suitable for some of the isotherms. Langmuir and Freundlich sorption isotherms were further used to fit the experimental data by applying linear regression and nonlinear regression approaches. The Freundlich isotherm was found to be the most suitable model to describe the experiment data.

Subjects/Keywords: microconstituents; alum; sorption; wastewater treatment

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APA (6^th Edition):

Zhu, Y. (2014). Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/31377

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):

Zhu, Ying. “Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added .” 2014. Thesis, University of Ottawa. Accessed February 24, 2020. http://hdl.handle.net/10393/31377.

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

MLA Handbook (7^th Edition):

Zhu, Ying. “Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added .” 2014. Web. 24 Feb 2020.

Vancouver:

Zhu Y. Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added . [Internet] [Thesis]. University of Ottawa; 2014. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/10393/31377.

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

Council of Science Editors:

Zhu Y. Sorption of Microconstituents onto Primary and Activated Sludge to which Alum Has Been Added . [Thesis]. University of Ottawa; 2014. Available from: http://hdl.handle.net/10393/31377

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

Colorado School of Mines

17. Dangelmayr, Martin A. Biogeochemical controls of uranium remediation and transport.

Degree: PhD, Civil and Environmental Engineering, 2018, Colorado School of Mines

URL: http://hdl.handle.net/11124/172151

► In the U.S. almost 140 sites have been contaminated by uranium mining and milling operations or by the storage of radioactive materials. In-situ recovery (ISR)… (more)

▼ In the U.S. almost 140 sites have been contaminated by uranium mining and milling operations or by the storage of radioactive materials. In-situ recovery (ISR) facilities still face challenges restoring water to pre-mining conditions and leave behind elevated uranium concentrations. Bioremediation and reactive transport modeling are potential tools to mitigate the impact of uranium contamination on human and environmental health, through their ability to immobilize uranium and assess the effectiveness of natural uranium attenuation. This project investigated biogeochemical aspects of both active and natural remediation of uranium contaminated subsurface for two field sites: The Smith Ranch Highland (SRH) site in WY, and the Rifle, Integrated Field Research Challenge (IFRC) site in CO. Our project objectives were to study the transformation of organic substrate during biostimulation and assess uranium retardation due to sorption with sediments taken from an ISR site. This thesis presents two research projects that address the remediation and risk assessment of uranium contaminated sites. The first project evaluated the impact of added organic carbon on the long-term biogeochemical attenuation of uranium in the subsurface of a former mill tailings site. Fluorescence and specific ultraviolet absorption (SUVA) analyses were used together with dissolved organic carbon (DOC) measurements to track organic carbon dynamics during and post-biostimulation of the 2011 Rifle IFRC experiment. An electron mass balance was performed on well CD01 to determine if any carbon sinks were unaccounted for. DOC values increased to 1.76 mM-C during biostimulation, and 3.18 mM-C post-biostimulation over background DOC values of 0.3-0.4 mM-C. Elevated DOC levels persisted 90 days after acetate injections ceased. The electron mass balance revealed that assumed electron acceptors would not account for the total amount of acetate consumed. Fluorescence spectra showed an increase in signals associated with soluble microbial products (SMP), during biostimulation, which disappeared post-biostimulation despite an increase in DOC. SUVA analyses, indicated that DOC present post-biostimulation is less aromatic in nature, compared to background DOC. Our results suggest that microbes convert injected acetate into a carbon sink that may be available to sustain iron reduction post-stimulation The second project consisted of two sets of column experiments and attempted to evaluate the impact of alkalinity and pH on the sorption of uranium in sediments from an ISR site. The ability of thermodynamic models to predict uranium behavior under conditions relevant to ISR restoration sites was also tested. Sediments at three different depths from a monitoring well at the SRH site were used in nine column studies and six batch experiments to study the sorption capacity of SRH sediments and estimate uncertainties associated with fitted parameters. Sediments were characterized by X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) for dominant mineralogy and… Advisors/Committee Members: Figueroa, Linda A. (advisor), Stone, James J. (advisor), Sharp, Jonathan O. (committee member), Ranville, James F. (committee member), Bellona, Christopher (committee member).

Subjects/Keywords: Groundwater; Uranium; Sorption; Bioremediation

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APA (6^th Edition):

Dangelmayr, M. A. (2018). Biogeochemical controls of uranium remediation and transport. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/172151

Chicago Manual of Style (16^th Edition):

Dangelmayr, Martin A. “Biogeochemical controls of uranium remediation and transport.” 2018. Doctoral Dissertation, Colorado School of Mines. Accessed February 24, 2020. http://hdl.handle.net/11124/172151.

MLA Handbook (7^th Edition):

Dangelmayr, Martin A. “Biogeochemical controls of uranium remediation and transport.” 2018. Web. 24 Feb 2020.

Vancouver:

Dangelmayr MA. Biogeochemical controls of uranium remediation and transport. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2018. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/11124/172151.

Council of Science Editors:

Dangelmayr MA. Biogeochemical controls of uranium remediation and transport. [Doctoral Dissertation]. Colorado School of Mines; 2018. Available from: http://hdl.handle.net/11124/172151

University of Manitoba

18. Caron, Emmanuelle. Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection.

Degree: Soil Science, 2011, University of Manitoba

URL: http://hdl.handle.net/1993/4730

► Estrogens produced by livestock can be released into soils when their manure is spread onto agricultural land. This is the first study to determine the… (more)

Subjects/Keywords: estrogen; immunoassay; sorption; mineralization

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APA (6^th Edition):

Caron, E. (2011). Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/4730

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):

Caron, Emmanuelle. “Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection.” 2011. Thesis, University of Manitoba. Accessed February 24, 2020. http://hdl.handle.net/1993/4730.

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

MLA Handbook (7^th Edition):

Caron, Emmanuelle. “Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection.” 2011. Web. 24 Feb 2020.

Vancouver:

Caron E. Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection. [Internet] [Thesis]. University of Manitoba; 2011. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/1993/4730.

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

Council of Science Editors:

Caron E. Fate of estrogenic compounds in agricultural soils and development of an immunoassay for their environmental detection. [Thesis]. University of Manitoba; 2011. Available from: http://hdl.handle.net/1993/4730

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

University of Guelph

19. Safieh, Peter. Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters .

Degree: 2019, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16924

► Natural sorbents for the removal of free toluene, hexane, and toluene/hexane mixtures from surface water were made using lecithin, food grade oils (canola, sunflower, safflower… (more)

Subjects/Keywords: Emulsion; Lecithin; Sorption; Sorbents; Natural

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APA (6^th Edition):

Safieh, P. (2019). Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16924

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):

Safieh, Peter. “Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters .” 2019. Thesis, University of Guelph. Accessed February 24, 2020. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16924.

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

MLA Handbook (7^th Edition):

Safieh, Peter. “Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters .” 2019. Web. 24 Feb 2020.

Vancouver:

Safieh P. Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters . [Internet] [Thesis]. University of Guelph; 2019. [cited 2020 Feb 24]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16924.

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

Council of Science Editors:

Safieh P. Use of Lecithin-Based Emulsion Gels to Absorb Toluene and Hexane Spills from Surface Waters . [Thesis]. University of Guelph; 2019. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16924

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

KTH

20. Hadialhejazi, Golshid. Assessment of vanadium sorption by different soils.

Degree: Land and Water Resources Engineering (moved 20130630), 2012, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171798

► Vanadium is a white bright metal that belongs to group 5 in the periodic table of elements. It can exist in different oxidation states… (more)

▼ Vanadium is a white bright metal that belongs to group 5 in the periodic table of elements. It can exist in different oxidation states from -2 to +5 although the forms can be found naturally in the environment are (III), (IV) and (V). As vanadium is toxic at high concentrations, and as vanadium is a common contaminant from e.g., steel slags, more detailed knowledge on the environmental behavior of this metal is required. One important property is its sorption to soils, as this will determine the bioavailability and the risk of leaching from soils. In surface soils vanadium(V) is commonly the predominating redox species. Therefore the purpose of this study was to determine vanadium(V) sorption in 7 different soils in order to investigate the factors determining vanadium(V) sorption and to estimate the capacity of the soils to bind vanadium. From laboratory adsorption experiments, vanadium sorption has been studied as a function of pH, vanadium(V) concentration, and phosphorus status. The adsorbed vanadium(V) of investigated soils was compared on the basis of the Freundlich parameters m and log <em>K_f</em>. The clay content of the soil and the content of oxalate soluble iron and aluminum were two important factors for the vanadium(V) sorption behavior. The higher the values of these soil properties, the stronger was vanadium(V) sorption. Among the soils investigated here the sorption strength was highest for the Kungängen A₃ soil and then decreased in the following order Säby, Kungsängen D₃, Pustnäs, Termunck, Guadalajara and Zwijnaarde. It is notable that the three soils with the strongest vanadium(V) sorption were clay soils, whereas the other four were sandy or silty soils. The pH dependence of vanadium sorption was also determined. The results show that the percentage sorbed vanadium(V) increases with decreasing pH. This is due probably to the anion properties of vanadium(V) (i.e. vanadate) in combination with increased positive surface charge on the soil colloids at lower pH. Moreover there is a competition between phosphate and vanadium(V) for sorption sites, which will cause less vanadium(V) sorption in soils. Therefore both the pH value and the phosphorus status are two additional factors that influence the vanadium sorption properties of soils.

Subjects/Keywords: Vanadium; soil; Freundlich model; sorption

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APA (6^th Edition):

Hadialhejazi, G. (2012). Assessment of vanadium sorption by different soils. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171798

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):

Hadialhejazi, Golshid. “Assessment of vanadium sorption by different soils.” 2012. Thesis, KTH. Accessed February 24, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171798.

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

MLA Handbook (7^th Edition):

Hadialhejazi, Golshid. “Assessment of vanadium sorption by different soils.” 2012. Web. 24 Feb 2020.

Vancouver:

Hadialhejazi G. Assessment of vanadium sorption by different soils. [Internet] [Thesis]. KTH; 2012. [cited 2020 Feb 24]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171798.

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

Council of Science Editors:

Hadialhejazi G. Assessment of vanadium sorption by different soils. [Thesis]. KTH; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171798

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

Loughborough University

21. Sameh, Ebong F. Sorption of Ni and Eu to granitic rocks and minerals.

Degree: 2011, Loughborough University

URL: https://dspace.lboro.ac.uk/2134/9324 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566497

► The work presented in this thesis is divided into two parts. The first part is the sorption of Ni and Eu to granitic materials, and… (more)

Subjects/Keywords: CAM modelling; Hysteresis; Sorption kinetics; Autoradiography; Competitive sorption; Exchange capacity

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APA (6^th Edition):

Sameh, E. F. (2011). Sorption of Ni and Eu to granitic rocks and minerals. (Doctoral Dissertation). Loughborough University. Retrieved from https://dspace.lboro.ac.uk/2134/9324 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566497

Chicago Manual of Style (16^th Edition):

Sameh, Ebong F. “Sorption of Ni and Eu to granitic rocks and minerals.” 2011. Doctoral Dissertation, Loughborough University. Accessed February 24, 2020. https://dspace.lboro.ac.uk/2134/9324 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566497.

MLA Handbook (7^th Edition):

Sameh, Ebong F. “Sorption of Ni and Eu to granitic rocks and minerals.” 2011. Web. 24 Feb 2020.

Vancouver:

Sameh EF. Sorption of Ni and Eu to granitic rocks and minerals. [Internet] [Doctoral dissertation]. Loughborough University; 2011. [cited 2020 Feb 24]. Available from: https://dspace.lboro.ac.uk/2134/9324 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566497.

Council of Science Editors:

Sameh EF. Sorption of Ni and Eu to granitic rocks and minerals. [Doctoral Dissertation]. Loughborough University; 2011. Available from: https://dspace.lboro.ac.uk/2134/9324 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566497

22. Duchateau, Maxime. Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode.

Degree: Docteur es, Chimie et Physicochimie des matériaux, 2014, Montpellier, Ecole nationale supérieure de chimie

URL: http://www.theses.fr/2014ENCM0019

►

L'industrie nucléaire publique et militaire génère une quantité importante d'effluents liquides radioactifs qu'il faut traiter avant leur rejet dans l'environnement. Des procédés de décontamination alternatifs… (more)

▼

L'industrie nucléaire publique et militaire génère une quantité importante d'effluents liquides radioactifs qu'il faut traiter avant leur rejet dans l'environnement. Des procédés de décontamination alternatifs aux techniques industrielles (évaporation, traitement chimique) sont en cours de développement, comme par exemple le traitement en colonne ou le couplage filtration/sorption. Une partie des recherches associées à ces techniques de décontamination porte sur l'élaboration et la mise en forme de sorbants spécifiques. Dans ce contexte, les objectifs de cette thèse étaient d'une part d'étudier la synthèse en milieu CO2 supercritique (SC) de films de TiO2 déposés sur des supports macroporeux et d'autre part d'évaluer leur potentiel d'extraction dans ces procédés alternatifs. Une méthode de synthèse reproductible a été mise au point, basée sur la décomposition thermique de l'isopropoxyde de titane en milieu CO2 SC entre 150°C et 350°C. Dès 150°C, cette méthode permet la réalisation de films de TiO2 nanostructurés et adhérents sur des supports macroporeux en céramique (mousses, supports tubulaires en alumine α). L'effet de la température de synthèse de ces matériaux sur leurs caractéristiques physico-chimiques et leurs propriétés de sorption a été étudié sur des poudres de TiO2 élaborées dans les mêmes conditions que les films supportés. Les meilleures performances de sorption ont été observées pour la poudre obtenue à 150°C, du fait de sa plus grande densité de sites de surface par rapport aux poudres élaborée à 250°C et 350°C. Cette température de synthèse (150°C) a donc été sélectionnée pour l'étude détaillée des sorbants composites (TiO2/supports) afin d'évaluer leurs performances de sorption dans les procédés de traitement en continu. Les essais de sorption en colonne ont montré qu'une mousse en alumine macroporeuse (Φpore=400µm) revêtue de TiO2 est adaptée pour traiter des effluents en mode dynamique à fort débit. La taille des macropores et la hauteur de colonne sont des paramètres importants à maitriser. Pour le traitement par filtration/sorption, les membranes de TiO2 présentent une bonne résistance mécanique et sont capables d'extraire le strontium en mode dynamique. D'autre part dans le cas du strontium, les sorbants composites (TiO2/mousse ou TiO2/support tubulaire) sont régénérables à 100% à l'aide d'une solution aqueuse acidifiée (pH=3).

Public and military nuclear industry generates a significant amount of radioactive liquid waste which must be treated before being released into the environment. Decontamination methods alternative to the industrial techniques (evaporation, chemical treatment) are being developed, such as column treatments or coupled filtration/sorption processes. Current researches mainly focus on the development and shaping of specific sorbents. In this context, the objectives of this thesis were first to study the synthesis of TiO2 layers on macroporous ceramic supports in supercritical (SC) CO2 and then to evaluate their potential for radionuclide extraction in these alternative…

Advisors/Committee Members: Julbe, Anne (thesis director).

Subjects/Keywords: CO2 supercritique; TiO2; Couches; Sorption; Supercritical CO2; TiO2; Layers; Sorption; 540

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

APA (6^th Edition):

Duchateau, M. (2014). Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode. (Doctoral Dissertation). Montpellier, Ecole nationale supérieure de chimie. Retrieved from http://www.theses.fr/2014ENCM0019

Chicago Manual of Style (16^th Edition):

Duchateau, Maxime. “Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode.” 2014. Doctoral Dissertation, Montpellier, Ecole nationale supérieure de chimie. Accessed February 24, 2020. http://www.theses.fr/2014ENCM0019.

MLA Handbook (7^th Edition):

Duchateau, Maxime. “Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode.” 2014. Web. 24 Feb 2020.

Vancouver:

Duchateau M. Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode. [Internet] [Doctoral dissertation]. Montpellier, Ecole nationale supérieure de chimie; 2014. [cited 2020 Feb 24]. Available from: http://www.theses.fr/2014ENCM0019.

Council of Science Editors:

Duchateau M. Étude de l’élaboration en milieu CO2 supercritique de films de TiO2 supportés pour le traitement en mode dynamique d'effluents aqueux radioactifs. : Preparation of TiO2 supported layers in supercritical CO2 media for the treatment of radioactive aqueous effluents in dynamic mode. [Doctoral Dissertation]. Montpellier, Ecole nationale supérieure de chimie; 2014. Available from: http://www.theses.fr/2014ENCM0019

23. Bhouri, Naoufel. Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations.

Degree: Docteur es, Sciences du bois et des fibres, 2009, Université Henri Poincaré – Nancy I

URL: http://www.theses.fr/2009NAN10120

►

Ce travail constitue une contribution à l'étude de l'influence de la déformation libre des fibres textiles sous l'effet des contraintes hydriques sur la structure globale… (more)

▼

Ce travail constitue une contribution à l'étude de l'influence de la déformation libre des fibres textiles sous l'effet des contraintes hydriques sur la structure globale d'un tricot Jersey et d'un tissu Toile en coton, ayant subi les mêmes traitements de finition. Une comparaison entre les capacités de sorption du Jersey et des fils défilés de leur structure montre que le serrage géométrique limite les capacités de sorption du Jersey. Les coefficients du tenseur déformation plane du Jersey sous l'effet d'un cycle d'adsorption/désorption montre un gonflement croissant en fonction de l'humidité au moment de l'adsorption et un rétrécissement presque linéaire au moment de la désorption pour reprendre ses valeurs initiales marquant ainsi l'effet mémoire de l'état relaxé de la structure. L'influence du repassage sur le comportement de la Toile en coton sous l'effet de deux cycles continus successifs d'adsorption/désorption est étudiée. Les résultats montrent que l'aplatissement des fils dans la structure génère une amplification de la déformation plane résultante. Un deuxième cycle d'adsorption successif montre l'annulation complète de l'effet de repassage. Une comparaison entre les isothermes d'adsorption et de désorption d'un tissu Toile repassé et non repassé montre que les isothermes de sorption de la Toile repassée et non repassée se collent dés la troisième zone de l'isotherme du premier cycle d'adsorption, ce qui explique que l'encombrement stérique des molécules d'eau dans la structure de la Toile repassée génère un réarrangement stéréochimique de la structure supramoléculaire pour reprendre une forme similaire à la Toile non repassée.

The 2D deformation of bleached plain weave and Jersey cotton ready to wear clothing was measured during adsorption and desorption cycles. The strain along warp and weft directions and the shear deformation were evaluated by image correlation process. The dimensional variations are explained by geometrical consideration of the structure at microscopic (fibers scale) and macroscopic levels (yarns scale). Indeed, the reaction between water vapor molecules and material enlightens two steps. At first, the swelling fibers fill the micro pores inside the yarns. Then, the yarns swell and push on their neighbors to fill up the macro pores and cause the macroscopic swelling of the overall structure. During the desorption phase, the fibers shrink to create a free space inside the plain weave structure that will be relaxed to find its initial state. The shear deformation is related to the cohesion by twist between cotton fibers. The ironing generates flattened yarns and increases their friction which amplifies the deformation during the first adsorption cycle. However, this effect is cancelled at the end of the first adsorption / desorption cycle with no memory effect of the ironing process. These results are confirmed by comparison between sorption isotherms of ironed and not ironed plain weave samples. A comparison between the sorption capacity of Jersey and yarn made of the same structure…

Advisors/Committee Members: Perré, Patrick (thesis director), Ben Nasrallah, Sassi (thesis director).

Subjects/Keywords: Coton; Adsorption / Désorption; Isothermes de sorption; Hystérésis de sorption; Fibres textiles

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

APA (6^th Edition):

Bhouri, N. (2009). Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations. (Doctoral Dissertation). Université Henri Poincaré – Nancy I. Retrieved from http://www.theses.fr/2009NAN10120

Chicago Manual of Style (16^th Edition):

Bhouri, Naoufel. “Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations.” 2009. Doctoral Dissertation, Université Henri Poincaré – Nancy I. Accessed February 24, 2020. http://www.theses.fr/2009NAN10120.

MLA Handbook (7^th Edition):

Bhouri, Naoufel. “Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations.” 2009. Web. 24 Feb 2020.

Vancouver:

Bhouri N. Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations. [Internet] [Doctoral dissertation]. Université Henri Poincaré – Nancy I; 2009. [cited 2020 Feb 24]. Available from: http://www.theses.fr/2009NAN10120.

Council of Science Editors:

Bhouri N. Comportement thermodynamique et dimensionnel des matériaux textiles soumis à des variations des conditions climatiques : Thermodynamic and dimensional behavior of textile materials under climatic variations. [Doctoral Dissertation]. Université Henri Poincaré – Nancy I; 2009. Available from: http://www.theses.fr/2009NAN10120

University of Vienna

24. Schönhofer, Manuel. Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien.

Degree: 2018, University of Vienna

URL: http://othes.univie.ac.at/52715/

► Die vielfältige Verwendungsweise von Plastik, sei es als Gehäuseteile oder als Mikroplastik in Scheuermitteln führte seit den 1950er Jahren zu einem rasanten Anstieg im globalen… (more)

▼ Die vielfältige Verwendungsweise von Plastik, sei es als Gehäuseteile oder als Mikroplastik in Scheuermitteln führte seit den 1950er Jahren zu einem rasanten Anstieg im globalen Bedarf. (Mikro-) Plastik kann durch seine hohen Sorptionskapazitäten organische Substanzen aufnehmen und könnte dadurch zu einem toxikologischen Risiko werden. Zusätzlich führen die hohen Produktionszahlen und der unvorsichtige Einsatz von Plastik zu einem starken Eintrag in die Umwelt. Besonders Reifengranulat (TCR) erfreut sich als günstige Alternative zu elektrochemischen und photochemischen Methoden zur Entfernung von Schadstoffen sowie Aktivkohle als Passivsammler größter Beliebtheit und wird oft auch bewusst in der Bauindustrie als Zement-Verbundstoff und Füllmaterial für Sportplätze in die Umwelt eingetragen. Da TCR als Elastomer in vielen Statistiken nicht als Plastik geführt wird, wird dieses bisher als potentielles Risiko ignoriert und deshalb nur wenig untersucht. Die seltenen Studien zu diesem Thema belegen jedoch große Sorptionskapazitäten. Als Grund wird der hohe Anteil an Kohlenstoff vermutet. Welche molekularen Eigenschaften das Sorptionsverhalten beeinflussen ist weitgehend unerforscht, doch scheinen Hydrophobizität und Polarität der organischen Materialien den größten Einfluss auf die hohen Sorbatkonzentrationen am TCR zu haben. Ziel dieser Arbeit ist es deshalb, einige dieser Wissenslücken um das TCR und dessen häufigsten Bestandteile Styrol-Butadien-Kautschuk (SBR) und Industrieruß (CB) zu untersuchen, die molekularen Wechselwirkungen zu identifizieren und diese mittels Sorptionsisothermen zu beschreiben. Zusätzlich wird mit verschiedenen wissenschaftlichen Methoden versucht, einige der Materialeigenschaften von CB, SBR und TCR zu definieren. Erwartet wird, aufbauend auf der vorhandenen Literatur, dass CB der Hauptträger der Sorptionseigenschaften von TCR ist und dass sich SBR stark davon unterscheidet. Zusätzlich wird Hydrophobizität und Polarität als maßgebliche Wechselwirkungen der Sorption angenommen, die jedoch von weiteren Eigenschaften, wenn auch in einem geringeren Ausmaß, verstärkt werden. Die Ergebnisse dieser Arbeit bestätigen, dass CB, SBR und TCR eine große Sorptionsaffinität gegenüber den gewählten Sorbaten besitzen, diese jedoch nicht ausschließlich durch die Hydrophobizität und Polarität der organischen Moleküle gesteuert werden. Als sekundäre Sorptionseigenschaften wurden die Molekülstruktur, Dipol-Dipol-Wechselwirkungen, Van-der-Waals-Kräfte und Aromatizität identifiziert. Nicht bestätigt werden konnte die Hypothese, dass der CB-Anteil im TCR die Sorption dominiert. Die Sorptionsisothermen lassen auf ein ähnliches Sorptionsverhalten zwischen SBR und TCR schließen, welches von CB verschieden ist. SBR kann somit als Hauptverursacher der Sorption im TCR identifiziert werden. CB hat auf die Sorption nur einen geringen Einfluss, möglicherweise dadurch bedingt, dass die Poren des CB mit Polymer verfüllt sind. Die Sorptionsisothermen belegen bei allen verwendeten Sorbaten nichtlineare Adsorption durch…

Subjects/Keywords: 38.99 Geowissenschaften: Sonstiges; Sorption / Mikroplastik; sorption / micro plastics

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

APA (6^th Edition):

Schönhofer, M. (2018). Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/52715/

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):

Schönhofer, Manuel. “Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien.” 2018. Thesis, University of Vienna. Accessed February 24, 2020. http://othes.univie.ac.at/52715/.

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

MLA Handbook (7^th Edition):

Schönhofer, Manuel. “Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien.” 2018. Web. 24 Feb 2020.

Vancouver:

Schönhofer M. Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien. [Internet] [Thesis]. University of Vienna; 2018. [cited 2020 Feb 24]. Available from: http://othes.univie.ac.at/52715/.

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

Council of Science Editors:

Schönhofer M. Sorption ausgewählter organischer Modellsubstanzen an Reifenmaterialien. [Thesis]. University of Vienna; 2018. Available from: http://othes.univie.ac.at/52715/

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

Loughborough University

25. Sameh, Ebong F. Sorption of Ni and Eu to granitic rocks and minerals.

Degree: PhD, 2011, Loughborough University

URL: http://hdl.handle.net/2134/9324

► The work presented in this thesis is divided into two parts. The first part is the sorption of Ni and Eu to granitic materials, and… (more)

Subjects/Keywords: 551.9; CAM modelling; Hysteresis; Sorption kinetics; Autoradiography; Competitive sorption; Exchange capacity

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

APA (6^th Edition):

Sameh, E. F. (2011). Sorption of Ni and Eu to granitic rocks and minerals. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/9324

Chicago Manual of Style (16^th Edition):

Sameh, Ebong F. “Sorption of Ni and Eu to granitic rocks and minerals.” 2011. Doctoral Dissertation, Loughborough University. Accessed February 24, 2020. http://hdl.handle.net/2134/9324.

MLA Handbook (7^th Edition):

Sameh, Ebong F. “Sorption of Ni and Eu to granitic rocks and minerals.” 2011. Web. 24 Feb 2020.

Vancouver:

Sameh EF. Sorption of Ni and Eu to granitic rocks and minerals. [Internet] [Doctoral dissertation]. Loughborough University; 2011. [cited 2020 Feb 24]. Available from: http://hdl.handle.net/2134/9324.

Council of Science Editors:

Sameh EF. Sorption of Ni and Eu to granitic rocks and minerals. [Doctoral Dissertation]. Loughborough University; 2011. Available from: http://hdl.handle.net/2134/9324

26. Wlodarczyk, Damien. Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment.

Degree: Docteur es, Génie des procédés, 2015, Montpellier

URL: http://www.theses.fr/2015MONTS271

►

Le travail de thèse présenté dans ce manuscrit a pour objectif de mettre en place un nouveau procédé d’élaboration de membranes à base de chitosane… (more)

▼

Le travail de thèse présenté dans ce manuscrit a pour objectif de mettre en place un nouveau procédé d’élaboration de membranes à base de chitosane pour le traitement d’effluents acides contenants des ions métallique. Soluble en milieu aqueux acide, le chitosane présente la propriété de gélifier lorsque le pH devient basique, ce qui permet d’envisager l’élaboration de membrane sans solvant organique contrairement aux polymères synthétiques classiques. Par ailleurs, ce travail de thèse s’est intéressé à un procédé original de gélification par voie enzymatique, dans lequel la gélification in-situ de la solution de chitosane permet une structuration contrôlée de la membrane contrairement aux procédés classiques qui donnent lieu à un front de gélification. Une étude des cinétiques de gélification en fonction des paramètres d’élaboration (température et concentration en urée) a mis en évidence que seule la température est significativement influente sur le temps de gélification dès lors que la concentration en urée n’est pas limitante. Un modèle a été mis en place pour décrire la gélification enzymatique du chitosane afin de comprendre les mécanismes des cinétiques réactionnelles et de transferts lors de la formation du gel. Des membranes de chitosane ont ainsi été élaborées par le procédé par voie enzymatique, la porosité de ces membranes ayant été générée avec un agent porogène (PEG 6000) et une réaction d’acétylation du chitosane ayant permis d’obtenir des membranes insolubles en milieu acide. Les membranes obtenues ont été caractérisées en termes de morphologie et de propriétés fonctionnelles (filtration, sorption du Cu(II) comme élément métallique modèle).

The Ph-D work presented in this manuscript aims to develop a new process for elaborate chitosan membranes for treatment of acidic media containing metal ions. Soluble In acidic aqueous media, gelation occurs when the pH becomes basic, allowing elaboration of membrane without the use of organic solvents unlike classical synthetic polymers. Moreover, this Ph-D work has focused on an original process enzymatic gelation which the in-situ gelation of chitosan solution allows a controlled structuration of the membrane unlike conventional processes which leads to a front gelling.A study of gelation time as a function of the elaboration parameters (temperature and urea concentration) highlighted that only the temperature is a main parameter on gelation time since the urea concentration is not limiting. A model was developed to describe the chitosan enzymatic gelation in order to understand mechanisms of reaction kinetics and transfers during the gel formation.Chitosan membranes have been prepared by enzymatic process, the porosity of such membranes have been generated with a blowing agent (PEG 6000) and an acetylation of chitosan having yielded insoluble membranes in acid medium. The resulting membranes were characterized by their morphology and functional properties (filtration, sorption of Cu (II) as model metal element).

Advisors/Committee Members: Faur, Catherine (thesis director).

Subjects/Keywords: GélificatIon enzymatique; Ultrafiltration; Sorption; Enzymatic gelation; Ultrafiltration; Sorption

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

APA (6^th Edition):

Wlodarczyk, D. (2015). Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment. (Doctoral Dissertation). Montpellier. Retrieved from http://www.theses.fr/2015MONTS271

Chicago Manual of Style (16^th Edition):

Wlodarczyk, Damien. “Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment.” 2015. Doctoral Dissertation, Montpellier. Accessed February 24, 2020. http://www.theses.fr/2015MONTS271.

MLA Handbook (7^th Edition):

Wlodarczyk, Damien. “Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment.” 2015. Web. 24 Feb 2020.

Vancouver:

Wlodarczyk D. Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment. [Internet] [Doctoral dissertation]. Montpellier; 2015. [cited 2020 Feb 24]. Available from: http://www.theses.fr/2015MONTS271.

Council of Science Editors:

Wlodarczyk D. Elaboration contrôlée de membranes à base de chitosane pour le traitement de l'eau : Elaboration of chitosane membrane for water treatment. [Doctoral Dissertation]. Montpellier; 2015. Available from: http://www.theses.fr/2015MONTS271

27. Li, Zhi. Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation.

Degree: Docteur es, Hydrogéologie UM1, 2012, Université Montpellier I

URL: http://www.theses.fr/2012MON13523

►

L'irrigation par les eaux usées est une pratique intéressante dans les régions arides et semi-arides où la ressource en eau subit une pression accrue. Cependant,… (more)

▼

L'irrigation par les eaux usées est une pratique intéressante dans les régions arides et semi-arides où la ressource en eau subit une pression accrue. Cependant, cette pratique risque de contaminer les sols par des contaminants chimiques tels que les polluants organiques émergents comme les médicaments. Les mécanismes de transfert et de transformation de ces molécules sont encore peu connus. L'objectif de cette thèse a été d'étudier les processus de biodégradation et de sorption des médicaments en conditions contrôlées, avec une réflexion dans le contexte de la réutilisation des eaux usées pour l'irrigation. Nous avons exploité la signature chirale de l'antidépresseur venlafaxine (VEN) et de son métabolite humain majeur O-desméthyl venlafaxine (ODV) afin de discriminer le processus biologique et les processus abiotiques. Les résultats au laboratoire ont montré une corrélation entre le taux de biodégradation et le changement de fraction énantiomérique. La fraction énantiomérique de la VEN a été ensuite suivie à la sortie d'une STEP et dans une rivière recevant ce rejet, où un changement de la fraction énantiomérique a été observé, montrant l'intérêt de mieux développer cette approche pour des études de biodégradation in situ. Le processus de sorption des molécules cationiques VEN et ODV a été étudié avec deux approches, statique en batch et dynamique en colonne de lixiviation, avec une comparaison avec les molécules neutres carbamazépine et son métabolite trans-10,11-dihydro-10,11-dihydroxy carbamazepine. L'étude en batch a montré que pH et force ionique a influencé la sorption des molécules cationiques mais pas celle des molécules neutres. L'échange cationique pourrait ainsi jouer un rôle important dans la sorption des molécules cationiques. L'étude de la lixiviation a montré que les molécules neutres ont été plus mobiles que les molécules cationiques et elles sont susceptibles de contaminer l'eau souterraine dans le cas de l'irrigation par des eaux usées.

Wastewater irrigation represents great interest in arid and semi-arid regions where water demand is important. However, wastewater irrigation results in, for example, soil contamination by emerging organic pollutants such as pharmaceuticals. Transport and transformation mechanisms of these substances are still poorly understood. The objective of this thesis was to study the processes of biodegradation and sorption of pharmaceutical products in laboratory experiments, with a special reflection in the context of wastewater irrigation. Firstly, we exploited the chiral signature of the antidepressant venlafaxine (VEN) and its major human metabolite O-desmethyl venlafaxine (ODV) in order to discriminate the biological processes from other processes. Laboratory experiment showed a correlation between the biodegradation rate and the change in enantiomer fraction. The VEN was then monitored at the outlet of a WWTP and in the river receiving the discharge. A change in enantiomer fraction showed the interest for a better development of this application to investigate in…

Advisors/Committee Members: Fenet, Hélène (thesis director), Gomez Hernandez, Maria Elena (thesis director).

Subjects/Keywords: Résidus de médicaments; Biodégradation; Sorption; Pharmaceutical products; Biodegradation; Sorption; 614

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

APA (6^th Edition):

Li, Z. (2012). Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation. (Doctoral Dissertation). Université Montpellier I. Retrieved from http://www.theses.fr/2012MON13523

Chicago Manual of Style (16^th Edition):

Li, Zhi. “Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation.” 2012. Doctoral Dissertation, Université Montpellier I. Accessed February 24, 2020. http://www.theses.fr/2012MON13523.

MLA Handbook (7^th Edition):

Li, Zhi. “Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation.” 2012. Web. 24 Feb 2020.

Vancouver:

Li Z. Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation. [Internet] [Doctoral dissertation]. Université Montpellier I; 2012. [cited 2020 Feb 24]. Available from: http://www.theses.fr/2012MON13523.

Council of Science Editors:

Li Z. Devenir des résidus de médicaments dans les sols, biodégradation-sorption : discussion dans un contexte de réutilisation des eaux usées : Fate of pharmaceutical residus in the soil, biodegradation and sorption : discussion in the case of wastewater irrigation. [Doctoral Dissertation]. Université Montpellier I; 2012. Available from: http://www.theses.fr/2012MON13523

Univerzitet u Beogradu

28. Lopičić, Zorica R. 1977-. Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L.

Degree: Tehnološko-metalurški fakultet, 2017, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:16540/bdef:Content/get

►

Tehnološko inženjerstvo / Inženjerstvo zaštite životne sredine - Technological engineering / Environmental engineering

Rastuća industrijalizacija i smanjivanje energetskih rezervi uslovilo je istraživanja u pravcu razvoja… (more)

Subjects/Keywords: Lignocellulosic biomass; waste valorization; Prunus persica L.; sorption; copper; sorption kinetic; equilibrium; sorption thermodynamic; thermal degradation

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

APA (6^th Edition):

Lopičić, Z. R. 1. (2017). Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:16540/bdef:Content/get

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):

Lopičić, Zorica R 1977-. “Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L.” 2017. Thesis, Univerzitet u Beogradu. Accessed February 24, 2020. https://fedorabg.bg.ac.rs/fedora/get/o:16540/bdef:Content/get.

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

MLA Handbook (7^th Edition):

Lopičić, Zorica R 1977-. “Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L.” 2017. Web. 24 Feb 2020.

Vancouver:

Lopičić ZR1. Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L. [Internet] [Thesis]. Univerzitet u Beogradu; 2017. [cited 2020 Feb 24]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:16540/bdef:Content/get.

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

Council of Science Editors:

Lopičić ZR1. Proučavanje sorpcionog i energetskog potencijala otpadne biomase Prunus persica L. [Thesis]. Univerzitet u Beogradu; 2017. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:16540/bdef:Content/get

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

University of Lund

29. Saeidpour, Mahsa. Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials.

Degree: 2015, University of Lund

URL: https://lup.lub.lu.se/record/7791514 ; https://portal.research.lu.se/ws/files/4026457/7793782.pdf

► Most deterioration processes in cement based materials are closely related to moisture sorption and moisture transport properties. Therefore, it is important to study these properties,… (more)

▼ Most deterioration processes in cement based materials are closely related to moisture sorption and moisture transport properties. Therefore, it is important to study these properties, both theoretically and practically. This work is an experimental investigation in this field. Nowadays, the cement industry produces cements with increasing amounts of supplementary cementitious materials (SCMs) to limit CO2 emissions from concrete production. Knowledge about the moisture properties of concrete made from these blended cements is limited. This project has therefore been an attempt to further develop our understanding of the moisture properties of cement based materials, such as sorption isotherms and sorption transport properties in the presence of SCMs. This has been done by studying sorption isotherms mainly using the sorption balance method, and moisture transport coefficients using both the cup method and a sorption dynamic method. The experimental investigations were made on three types of hydrated cement pastes and mortars (OPC, OPC + 70% slag and OPC + 10% silica fume) with three different w/b –ratios (w/b) for cement paste (0.6, 0.5, 0.4) and two different w/b for cement mortar (0.5, 0.4). Sorption isotherms were determined for cement pastes and mortars in both hygroscopic and the super-hygroscopic relative humidity ranges using the sorption balance method, and the pressure plate method. The conclusion from this part of the study was that the desorption isotherms at low RH (0-30%) for different binders and different w/b-ratios are similar. At higher RHs the samples with silica fume and slag have higher moisture content than OPC samples. This is explained by that they have a higher amount of gel pores and a lower amount of capillary pores than OPC samples. The sorption isotherm at high RHs is difficult to validate experimentally, due to the critical RH of pore solutions. Steady-state and transient measurements of transport coefficients were also made. The dynamic sorption method was used to evaluate the diffusivity in small paste samples. The results show that Fick's law cannot completely describe the transport process in such small samples and sorption behavior is therefore anomalous with two processes with different time scales. One of these is macro-diffusion into the sample, which takes place on a shorter timescale in the small samples used. The second process takes place on longer timescales and it is possibly related to the sorption in nanometer-structure of materials. To better understand the transport properties in sorption cycles, steady-state diffusion coefficients of mortar samples were measured with a newly developed cup method set-up. The measurements were done on both the absorption and desorption limbs of sorption isotherms. For OPC samples the results show a clear difference between the diffusion coefficients in absorption and desorption with vapor content as potential (Dv) and presented as a function of relative humidity (RH). The Dv in desorption is higher than absorption especially at high RHs.…

Subjects/Keywords: Materials Engineering; Cement; Concrete; Moisture transport; Hysteresis; Supplementary cementitious materials; Water vapor sorption; Sorption isotherms; Anomalous sorption

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

APA (6^th Edition):

Saeidpour, M. (2015). Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/7791514 ; https://portal.research.lu.se/ws/files/4026457/7793782.pdf

Chicago Manual of Style (16^th Edition):

Saeidpour, Mahsa. “Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials.” 2015. Doctoral Dissertation, University of Lund. Accessed February 24, 2020. https://lup.lub.lu.se/record/7791514 ; https://portal.research.lu.se/ws/files/4026457/7793782.pdf.

MLA Handbook (7^th Edition):

Saeidpour, Mahsa. “Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials.” 2015. Web. 24 Feb 2020.

Vancouver:

Saeidpour M. Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials. [Internet] [Doctoral dissertation]. University of Lund; 2015. [cited 2020 Feb 24]. Available from: https://lup.lub.lu.se/record/7791514 ; https://portal.research.lu.se/ws/files/4026457/7793782.pdf.

Council of Science Editors:

Saeidpour M. Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials. [Doctoral Dissertation]. University of Lund; 2015. Available from: https://lup.lub.lu.se/record/7791514 ; https://portal.research.lu.se/ws/files/4026457/7793782.pdf

University of Alberta

30. Vagi, Lisa. Sorption of Cyclohexane on Oil Sands Tailings.

Degree: MS, Department of Chemical and Materials Engineering, 2012, University of Alberta

URL: https://era.library.ualberta.ca/files/1831cm25h

► The use of solvents for extraction of bitumen is attractive because no wet tailings are produced. Studies have already shown that hydrocarbon solvents can achieve… (more)

Subjects/Keywords: non aqueous extraction; oil sands; sorption

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

APA (6^th Edition):

Vagi, L. (2012). Sorption of Cyclohexane on Oil Sands Tailings. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/1831cm25h

Chicago Manual of Style (16^th Edition):

Vagi, Lisa. “Sorption of Cyclohexane on Oil Sands Tailings.” 2012. Masters Thesis, University of Alberta. Accessed February 24, 2020. https://era.library.ualberta.ca/files/1831cm25h.

MLA Handbook (7^th Edition):

Vagi, Lisa. “Sorption of Cyclohexane on Oil Sands Tailings.” 2012. Web. 24 Feb 2020.

Vancouver:

Vagi L. Sorption of Cyclohexane on Oil Sands Tailings. [Internet] [Masters thesis]. University of Alberta; 2012. [cited 2020 Feb 24]. Available from: https://era.library.ualberta.ca/files/1831cm25h.

Council of Science Editors:

Vagi L. Sorption of Cyclohexane on Oil Sands Tailings. [Masters Thesis]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/1831cm25h

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Open Access Theses and Dissertations