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Dissertations / Theses on the topic 'Membrane technology'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Harper, Davnet. "Novel applications of membrane technology." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248220.

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2

Keuler, Johan Nico. "Optimising catalyst and membrane performance and performing a fundamental analysis on the dehydrogenation of ethanol and 2-butanol in a catalytic membrane reactor." Thesis, Link to the online version, 2000. http://hdl.handle.net/10019.1/1277.

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3

Bighane, Neha. "Novel silica membranes for high temeprature gas separations." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43732.

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Membrane materials for gas separations span a wide range including polymers, metals, ceramics and composites. Our aim is to create economical hydrothermally stable membranes that can provide high H₂-CO₂ separation at a temperature of 300 degree Celsius, for application in the water-gas shift reactor process. The present work describes the development of novel silica and silica-titania membranes from the controlled oxidative thermolysis of polydimethylsiloxane. The scope of this thesis is fabrication of membranes, material characterization and preliminary gas permeation tests (35-80 degree Cels

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4

Patil, Charudatta Subhash. "Membrane reactor technology for ultrapure hydrogen production." Enschede : University of Twente [Host], 2005. http://doc.utwente.nl/50860.

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5

Jong, Jorrit de. "Application of membrane technology in microfluidic devices." Enschede : University of Twente [Host], 2008. http://doc.utwente.nl/58919.

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6

Raffin, Marie. "Optimisation of membrane technology for water reuse." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/9238.

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Increasing freshwater scarcity is making reclamation of wastewater effluent more economically attractive as a means of preserving freshwater resources. The use of an integrated membrane system (IMS), the combination of micro/ultra-filtration (MF/UF) followed by reverse osmosis (RO) membranes, represents a key process for municipal wastewater reuse. A major drawback of such systems is the fouling of both the MF/UF and RO membranes. The water to be treated by the IMS system varies from one wastewater treatment plant (WWTP) to another, and its fouling propensity changes correspondingly. It is thu

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7

Poletto, Patrícia. "Caracterização de membranas de poliamida 66 preparadas pelo método de inversão de fases." reponame:Repositório Institucional da UCS, 2010. https://repositorio.ucs.br/handle/11338/573.

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Neste trabalho foram preparadas membranas de poliamida 66 (PA 66) pelo método de inversão de fases (IF) e caracterizadas com o objetivo de verificar sua possível aplicação em processos de separação. As membranas de PA 66 foram preparadas utilizando dois solventes diferentes, ácido fórmico (AF) e ácido clorídrico (HCl) e água como não-solvente. As membranas preparadas na forma de filmes (não suportadas) foram caracterizadas por Espectroscopia de Infravermelho com Transformada de Fourier (FT-IR) e calorimetria exploratória diferencial (DSC), onde os resultados mostraram que a estrutura química e

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8

Sejour, Hensley. "Investigation of Dithiolenes for Propylene/Propane Membrane Separations." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19697.

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Polyimide membranes containing nickel dithiolenes were investigated for the separation of propylene and propane. Permeation and sorption experiments were conducted as well thermal property analyses. Results indicate that the dithiolene has an antiplasticizing effect on the polymers studied. Upon addition of the dithiolene there is a subsequent reduction in the permeability coefficient and the permeability selectivity remains relatively unchanged. There is some evidence of increases in solubility selectivity, but a larger decrease in diffusivity selectivity results in a decrease in the perm

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9

Sorensen, E. Todd. "Cross-linkable polyimide blends for stable membranes." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/10086.

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10

Chen, Cheng. "Membrane degradation studies in PEMFCs." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29712.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Fuller, Thomas; Committee Member: Beckham, Haskell; Committee Member: Hess, Dennis; Committee Member: Koros, William; Committee Member: Meredith, Carson. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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11

Mortimore, William A. "Microblock ionomers and their applications in membrane technology." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518222.

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12

Trzcinski, Antoine Prandota. "Anaerobic membrane bioreactor technology for solid waste stabilization." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/4358.

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In this study, a simulated Organic Fraction of Municipal Solid Waste (OFMSW) was treated inan anaerobic two-stage membrane process. The OFMSW feedstock was fed to a ten litre hydrolyticreactor (HR) where solid and liquid fractions were separated by a coarse mesh, whilethe leachate was fed to a three litre submerged anaerobic membrane bioreactor (SAMBR) within-situ membrane cleaning by biogas sparging beneath a flat sheet Kubota membrane. Theaim was to develop and optimize this two-stage process where the use of a membrane in bothreactors to uncouple the Solid and Liquid Retention Times (SRT an

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13

Costello, Michael John School of Chemical Engineering &amp Industrial Chemistry UNSW. "SHELL-SIDE FLUID DYNAMICS AND MASS TRANSFER THROUGH HOLLOW FIBRE MEMBRANE MODULES." Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 1995. http://handle.unsw.edu.au/1959.4/17042.

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There is a considerable volume of work available in literature which suggests that the performance of axial-flow hollow fibre membrane modules is limited by poorly distributed flow through the shell-side. This study was commissioned to examine the distribution of shell-side flow and its effect on mass transfer and to compare the performance measured by the axial-flow configuration to that obtained by a commonly used alternative known as the helically-wound module design. Laminar flow and mass transfer models have been developed to examine performance through axial-flow hollow fibre modules.

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14

Svang-Ariyaskul, Apichit. "Chiral separation using hybrid of preferential crystallization moderated by a membrane barrier." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33909.

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The major innovation of this work is an establishment of a novel chiral separation process using preferential crystallization coupled with a membrane barrier. This hybrid process was proved to be promising from a significant increase in product yield and purity compared to existing chiral separation processes. This work sets up a process design platform to extend the use of this hybrid process to a separation of other mixtures. This novel process especially is a promising alternative for chiral separation of pharmaceutical compounds which include more than fifty percent of approved drugs wor

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15

Liu, Junqiang. "Development of next generation mixed matrix hollow fiber membranes for butane isomer separation." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42807.

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Mixed matrix hollow fiber membranes maintain the ease of processing polymers while enhancing the separation performance of the pure polymer due to inclusion of molecular sieve filler particles. This work shows the development process of high loading mixed matrix hollow fiber membranes for butane isomer separation, from material selection and engineering of polymer-sieve interfacial adhesion to mixed matrix hollow fiber spinning. The matching of gas transport properties in polymer and zeolite is critical for forming successful mixed matrix membranes. The nC4 permeability in glassy commercial p

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16

Keuler, Johan Nico. "Preparation and characterisation of palladium composite membranes." Thesis, Link to the online version, 1997. http://hdl.handle.net/10019/1431.

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17

Nel, A. M. "Removal of organic foulants from capillary ultrafiltration membranes by use of ultrasound." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/1997.

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18

Shi, Xinlong. "Membrane fouling of activated sludge." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B30731884.

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19

Abegglen, Christian Konrad. "Membrane bioreactor technology for decentralized wastewater treatment and reuse /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17998.

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20

Hatt, Juliette W. "Pretreatment options for municipal wastewater reuse using membrane technology." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/10200.

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Increasing freshwater scarcity across the world means that wastewater reclamation is being considered as a key method in which to meet the growing demand. Evolution of water reuse schemes where high quality product is required such as for indirect potable reuse has led to the adoption in recent years of the integrated membrane scheme using a combination of microfiltration or ultrafiltration with reverse osmosis membrane. However, despite technological advancements, these membranes are still prone to fouling resulting in increased costs through cleaning or replacement. This thesis aims to look

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21

Morelli, Valentina <1987&gt. "Pressure Driven Membrane Technology for Food and Biotechnology Industry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7577/1/Valentina_Morelli_Tesi_Dottorato_2016.pdf.

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The increase in energy costs and the demands for products with greater nutritional value and of processing procedures less toxic to the environment are attractive factors for transferring membrane processing to food industry and biotechnology applications. Sugar production is one of the most energy-intensive applications in the food industry, therefore membrane separation processes find many applications, nevertheless some limitation exist for application of membrane processes in the sugar industry. This study focused on Food applications of membrane processes. A critical summary of a wide e

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22

Morelli, Valentina <1987&gt. "Pressure Driven Membrane Technology for Food and Biotechnology Industry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7577/.

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The increase in energy costs and the demands for products with greater nutritional value and of processing procedures less toxic to the environment are attractive factors for transferring membrane processing to food industry and biotechnology applications. Sugar production is one of the most energy-intensive applications in the food industry, therefore membrane separation processes find many applications, nevertheless some limitation exist for application of membrane processes in the sugar industry. This study focused on Food applications of membrane processes. A critical summary of a wide e

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23

Pan, Xuemiao. "Membrane emulsification to produce perfume microcapsules." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4555/.

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Microencapsulation is an efficient technology to deliver perfume oils from consumer products onto the surface of fabrics. Microcapsules having uniform size/mechanical strength, may provide better release performance. Membrane emulsification in a dispersion cell followed by in-situ polymerization was used to prepare narrow size distribution melamine-formaldehyde (MF) microcapsules containing several types of oil-based fragrances or ingredients. Investigated in this study are the parameters impacting to the size and size distribution of the droplets and final MF microcapsules. A pilot plant-scal

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24

Meyer, Faiek. "Hydrogen selective properties of cesium-hydrogensulphate membranes." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5047_1233727545.

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<p>Over the past 40 years, research pertaining to membrane technology has lead to the development of a wide range of applications including beverage production, water purification and the separation of dairy products. For the separation of gases, membrane technology is not as widely applied since the production of suitable gas separation membranes is far more challenging than the production of membranes for eg. water purification. Hydrogen is currently produced by recovery technologies incorporated in various chemical processes. Hydrogen is mainly sourced from fossil fuels via steam reformatio

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25

Lau, Pui Sze. "Influence of membrane chemistry on transport property /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CENG%202002%20LAUP.

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26

Jack, U. "Fabrication of wet phase inversion capillary membrane, dimension and diffusion effects." Thesis, Cape Peninsula University of Technology, 2006. http://hdl.handle.net/20.500.11838/895.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2006<br>A protocol already exists for fabrication of a capillary membrane having an internal ultrafiltration skin supported by a finger-like pore structure in the external capillary wall (Jacobs and Leukes, 1996; Jacobs and Sanderson, 1997). These membranes have been produced at the Institute of Polymer Science, University of Stellenbosch, South Africa. Two major applications emerged from the development of these internally skinned membranes. One application was in the production of potable water by Ultra-filt

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27

Tuan, Chik Syed Mohd Saufi. "Mixed Matrix Membrane Chromatography for Bovine Whey Protein Fractionation." Thesis, University of Canterbury. Chemical and Process Engineering, 2010. http://hdl.handle.net/10092/3647.

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Whey protein fractionation is an important industrial process that requires effective large-scale processes. Although packed bed chromatography has been used extensively, it suffers from low processing rates due to high back-pressures generated at high flow rates. Batch chromatography has been applied but generally has a low efficiency. More recently, adsorptive membranes have shown great promise for large-scale protein purification, particularly from large-volume dilute feedstocks. A new method for producing versatile adsorptive membranes by combining membrane and chromatographic resin matric

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28

Govender, Selvakumaran. "Bioaffinity separation using ligand-modified pluronic and synthetic membranes." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/16516.

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Thesis (PhD)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: A new membrane based affinity separation system that is bio-specific, biocompatible, well characterised and capable of being regenerated or re-used is described. The amphiphilic non-ionic surfactant Pluronic® F108, was covalently derivatised to form two novel bioligands (Pluronic-Biotin and Pluronic-DMDDO) for the bio-specific immobilisation of avidin conjugated proteins and histidine tagged proteins respectively. Pluronic was also used to non-covalently functionalise nonporous membranes for ligand attachment and to sim

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29

Lau, Wai Ngar. "Zeolite membrane microreactor for fine chemical production /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CENG%202006%20LAUW.

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30

Farid, Osama. "Investigating membrane selectivity based on polymer swelling." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/11774/.

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Nanofiltration has many potential applications as a separation technology for processes that use mixtures of aqueous and organic solvents, for example alcohol/water mixtures. Membrane systems are well established for separations carried out in aqueous media, however they have seen a much slower rate of uptake in non-aqueous processes or with aqueous/organic mixtures. This is because the interaction between membrane and solvent(s) dictates both the permeability and selectivity, and there is currently limited criterion for identifying the theoretical performance of a membrane based on the proper

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31

Uzal, Nigmet. "Recovery And Reuse Of Indigo Dyeing Wastewater Using Membrane Technology." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12609000/index.pdf.

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The objective of this study is to develop a membrane-based generic treatment scheme for wastewaters of indigo dyeing process of denim industry, based on water reuse. For this purpose, firstly the performances of microfiltration (MF), coagulation, and ultrafiltration (UF) processes were evaluated as pretreatment alternatives and the best pretreatment alternatives appeared to be single stage 5 &micro<br>m MF and sequential 5 &micro<br>m MF followed by 100 kDa UF providing high permeation rate and high color retention. These two pretreatment alternatives were compared based on the performance of

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32

Robinson, John. "The selective removal of components from gasoline using membrane technology." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/14343.

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Membrane technology is a potential method for upgrading gasoline quality, with respect to its tendency to promote fouling of engine inlet-systems. This thesis investigates the transport and separation mechanisms of dense polydimethylsiloxane (PDMS) membranes in nanofiltration applications relating to the filtration of gasoline fuels. Simulated fuels were created which comprised representative organic solvents with organometallic and poly-nuclear aromatic solutes. The flux and separation behaviour of the solvent-solute systems were studied using several apparatus and a range of operating regime

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33

Goulas, Athanasios K. "Applications of membrane technology on enzymatic oligosaccharide manufacture and purification." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288728.

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34

Patel, Amil Ashok 1979. "Membrane technology for the fabrication of three-dimensional photonic crystals." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60175.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 157-163).<br>Three-dimensional photonic crystals hold tremendous promise toward the realization of truly integrated photonic circuits on a single substrate. Nanofabrication techniques currently limit the ability to create the multilayer structure of dielectric materials. Past investigators have approached the problem using the layer-by-layer fabrication method; this method leverages the planar pro

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35

Williams, Steffan Richard. "Recovery of small organics from natural sources using membrane technology." Thesis, Swansea University, 2015. https://cronfa.swan.ac.uk/Record/cronfa43185.

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36

Borin, Frida, and Melika Abedi. "Membrane Distillation When Rivers Run Dry." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232567.

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This thesis is a techno-economic analysis of five potential energy sources that can be used to drive a water purifying system called the WaterApp. The Product will be installed for a pilot project in Balasore in Odisha, India, which is the case which this study is based on. The prime focus of the techno-economic analysis is to get a broad look on the possible energy sources to provide a basis for further investigation on the implementation of the WaterApp. Today, the WaterApp is still under research and development at Scarab Development AB. The future goal is to commercialize the WaterApp and

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37

Delgado, Guillermo Guadalupe. "Treatment of RO concentrate using VSEP technology." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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38

Song, Qilei. "Polymer molecular sieve membranes." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/280264.

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Sustainable energy supply and environmental protection are the major global scientific challenges in the 21st century, such as greenhouse gas capture, natural gas production, desalination of seawater for clean water production. Membrane separation technology offers attractive energy-efficient and environmental-friendly solutions to these challenges. This PhD thesis is focused on design and fabrication of membranes from novel molecularly defined polymers and understanding their physical properties, particularly the transport properties of gas molecules in polymer membranes. First, we demonstrat

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39

Shi, Xinlong, and 史昕龍. "Membrane fouling of activated sludge." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30731884.

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40

Saussus, Denis. "Membrane contact patterns in triaxial sand specimens." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19518.

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41

Jee, Sang Eun. "The effect of pore dimension of zeolites on the separation of gas mixtures." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33893.

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We examined the effect of the pore dimension of zeolites on the separation of gas mixtures using atomistic simulation methods. We studied two categories of the zeolites with small pores: pore modified silicalite for H₂/CH₄separation and small pore silica zeolites for CO₂/CH₄separation. The effect of pore modification of silicalite on the H₂/CH₄separation was examined. Under some degrees of surface modification, the CH₄flux was reduced much more than the H₂flux, resulting in high ideal selectivities. The use of small pore zeolites for CO₂/CH₄separations was studied. In DDR, we showed that CO₂di

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42

Martula, David Stefan. "Coalescence-induced coalescence in polymeric membrane formation /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004333.

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43

Mouton, Duane Wilmot. "The development of a membrane reactor for the dehydrogenation of isopropanol." Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/16397.

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Thesis (MScIng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: Both porous and dense hydrogen selective membranes have recently been an active area of research. The combination of a reactor and a separator in the form of a membrane reactor is seen as a feasible application in which to perform dehydrogenation reactions. These reactions are equilibrium limited so that the removal of the product H2 by a selective membrane can improve the process effectiveness. Early Pd-based membranes were made of thin-walled tubes. In an attempt to increase permeation rates, thin supported Pd memb

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44

Al-Zubaidi, Hussein A. "The transport properties of cation exchange membranes in bi-ionic forms." Thesis, University of Glasgow, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236019.

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45

Aygun, Saniye Seylan. "Recovery Of Sericin Protein From Silk Processing Wastewaters By Membrane Technology." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609745/index.pdf.

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Cocoon cooking wastewaters (CW) and silk degumming wastewaters (SDW) of silk processing industry were treated by membrane processes for sericin recovery. CW contains only sericin while SDW contains both sericin and soap. Sericin in CW had four molecular weight (MW) fractions<br>175-200 kDa (Sericin-1), 70-90 kDa (Sericin-2), 30-40 kDa (Sericin-3) and 10-25 kDa (Sericin-4). Two alternative process trains were developed for CW<br>1. centrifugation + microfiltration + nanofiltration + precipitation, 2. centrifugation + microfiltration + nanofiltration + dialysis + precipitation. In the first proc

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46

Varol, Cihangir. "Caustic Recovery From Highly Alkaline Denim Mercerizing Wastewaters Using Membrane Technology." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609855/index.pdf.

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Recovery of caustic solution from mercerizing wastewaters of a denim producing textile mill was performed by using membrane technologies. A comprehensive characterization study was conducted to develop the treatment scheme. Highly alkaline and warm condition of wastewater has induced using membranes made of Polyethersulfone (PES). Conducted pretreatment applications such as microfiltration, flocculation and centrifuge have been found unsuccessful to improve further treatment capacities. Hence recovery studies which are UF, NF and pilot-system membrane applications have been implemented without

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47

Hlabano-Moyo, Bongibethu Msekeli. "Separation of SO2/O2 using membrane technology / Bongibethu Msekeli Hlabano-Moyo." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9447.

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The Hybrid Sulphur process is one technology out of a multitude of known technologies responsible for hydrogen production. Within the latter hydrogen production cycle, it is pivotal to recover O2 as a by-product from a sulphuric acid decomposition reaction that produces SO2, H2O and O2. It is assumed that a simple phase separation stage carried out on the reaction products would liberate SO2 and O2 as a gaseous mixture leaving behind H2O in the liquid state. Several separation technologies are available to effect SO2/O2 separation, but membrane technology has proved to be dearer due to simpli

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48

Borgsmiller, Karen McNeal. "Synthetic membranes for chiral separations." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/11824.

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49

Kosuri, Madhava Rao. "Polymeric membranes for super critical carbon dioxide (scCO2) separations." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28242.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: William J. Koros; Committee Member: Amyn Teja; Committee Member: Carson Meredith; Committee Member: Sankar Nair; Committee Member: Wallace W. Carr.

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50

Ma, Canghai. "Optimization of asymmetric hollow fiber membranes for natural gas separation." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43700.

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Compared to the conventional amine adsorption process to separate CO₂ from natural gas, the membrane separation technology has exhibited advantages in easy operation and lower capital cost. However, the high CO₂ partial pressure in natural gas can plasticize the membranes, which can lead to the loss of CH₄ and low CO₂/CH₄ separation efficiency. Crosslinking of polymer membranes have been proven effective to increase the CO₂ induced plasticization resistance by controlling the degree of swelling and segmental chain mobility in the polymer. This thesis focuses on extending the success of crossli

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