Dissertations / Theses on the topic 'Ion exchange'
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Pan, L. C. "Ion exchange of proteins." Thesis, Swansea University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638406.
Full textZubair, M. "Ion exchange in chabazite." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239984.
Full textPribyl, Ondrej. "Modelling of electrochemical ion exchange." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325234.
Full textBayraktaroglu, Kerem. "Multicomponent Ion Exchange On Clinoptilolite." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607580/index.pdf.
Full textrdes type clinoptilolite for ammonium,cadmium and sodium ions. For this purpose, NH4 +-Na+,Cd2+-Na+ binary systems and NH4 +-Cd2+-Na+ multicomponent system were investigated both in batch and column systems at 0.1 and 0.01 constant total normality respectively and at 250C constant temperature. As a result of binary and ternary experiments, clinoptilolite&rsquo
s affinity for both ions but greater affinity to NH4+ ion than Cd2+ ion was observed and the selectivity sequence of Gö
rdes clinoptilolite was determined as NH4+>
Cd2+>
Na+ in binary and multicomponent batch and column operations. Additionally, total ion exchange capacities and maximum exchange levels of Gö
rdes clinoptilolite for both ions were determined in batch systems whereas breakthrough capacities and column efficiencies (for three different flow rates) were determined in column systems. Finally, it was concluded that the increase of the flow rate reduced the breakthrough capacities and column efficiencies of Gö
rdes clinoptilolite for ammonium and cadmium ions in multicomponent column systems involving more than one cation.
Ichsan, E. A. W. "Ion exchange on chelating fibres." Thesis, University of Salford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353980.
Full textPolite, Lee Nicholas. "Studies in ion exchange chromatography." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/54338.
Full textPh. D.
McVeigh, Ryan. "Biologically enhanced ion exchange of ammonium ion using clinoptilolite." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247390.
Full textRejaldien, Moegamat Zain. "Base metal equilibrium prediction on ion exchange resin." Thesis, Cape Technikon, 2002. http://hdl.handle.net/20.500.11838/875.
Full textThis study is the first phase of an investigation into an alternative process to recover base metals from solution, namely ion exchange. An identified ion exchange resin was employed to study the recovery of copper, nickel and cobalt from electrolytic solutions. The main focus of the investigation was the prediction of equilibrium conditions in this multi-component system using a batch configuration. In order to predict equilibrium conditions. existing multi-component isotherms such as Fritz and Schleunder were tested. It has been shown that traditional isothem15 did not accurately predict equilibrium conditions. hence the need for development of new isotherms. Essentially two approaches were followed in the development of new isotherms namely. an effective concentration approach as well as a heat transfer approach. Both yielded positive outcomes with the effective concentration approach proving to be the most accurate. In addition to these two approaches a thermodynamical approach was also tested which also showed favourable predictions for Cu loading
Maketon, Supachai. "Methods Development for Ion Chromatography." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc330927/.
Full textPearson, C. H. G. "New ion exchange resins for ion chromatography applied to anions." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372771.
Full textForrer, Nicola. "Antibody purification with ion-exchange chromatography." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17784.
Full textWatkins, E. James. "Foulant adsorption onto ion exchange membranes." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/7062.
Full textKadaifci, Bijen. "Multicomponent Ion Exchange On Zeolite 4a." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613916/index.pdf.
Full textAg+>
Cd2+>
Na+. Langmuir and Freundlich isotherms were drawn to describe experimental data. As compared the R2 of isotherms, it is clearly seen that Freundlich isotherm provides better fit for Cd2+-Na+ binary ion exchange and Ag+-Na+ binary ion exchange. The ternary ion exchange isotherms were plotted using equivalent fraction of three ions (Ag+,Na+,Cd2+) which participated in ion exchange experiments to determine selectivity of zeolite 4A for cadmium and silver. Selectivity sequence was determined as Ag+ >
Cd2+ >
Na+ for ternary ion exchange.
Schiewer, Silke. "Multi-metal ion exchange in biosorption." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ30375.pdf.
Full textDanielsson, Carl-Ola. "Continuous electropermutation using ion-exchange textile /." Stockholm : Department of Mechanics, Royal Institute of Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-359.
Full textSchiewer, Silke. "Multi-metal ion exchange in biosorption." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34443.
Full textThe mechanism of metal binding was confirmed to be ion exchange. A novel multi-component sorption isotherm model for cation binding was derived to aid in predicting the biosorption performance of the new biosorbent. This model considers chemical binding to free sites on the biomass and ion exchange (1:2 stoichiometry for divalent ions). It is based on chemical equilibrium constants and assumes competition of all cations for the same binding sites. Two main binding sites (carboxyl and sulfate) were characterized in terms of their respective quantities and pK$ rm sb{a}.$ Only two model parameters had to be determined for each metal cation (binding constants) and one additional parameter for each binding site (site quantity).
The two-site model successfully described metal and proton binding at different pH in mono- and di-metal systems. It was possible to predict the complete equilibrium sorption state, residual metal concentration in solution and metal uptake by the biosorbent, from the known initial state for varying amounts of biomass and different initial pH values. In order to account for the effect of ionic strength and electrostatic attraction, the above mentioned biosorption model was expanded by incorporating a version of the Donnan model and/or a Gouy-Chapman double layer model. The charge density of the biomass was characterized and intrinsic binding constants were derived. Correlations to account for biosorbent particle swelling were established. For the specific case of linear increase of swelling with the number of free sites, an explicit sorption isotherm equation was derived that includes the Donnan model in an easy-to use-way.
Using the parameters obtained from pH titrations at different ionic strength, it was possible to predict the effect of ionic strength on Cd binding. The influence of Ca on Cd binding was predicted from experiments with Cd and Ca, respectively, in mono-metal systems.
Chandrapalan, P. "Surface modification of ion exchange membrane." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249383.
Full textObermoller, H. D. "Uranium Isotope Separation by Ion Exchange." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518938.
Full textAddison, Paul A. "A study of ion exchange equilibrium." Thesis, University of Canterbury. Chemical and Process Engineering, 1990. http://hdl.handle.net/10092/7508.
Full textKier, D. "Ion-exchange for radioactive waste treatment." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376870.
Full textHerbas, Mélodie. "Ion exchange to cope with decommissioning." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/ion-exchange-to-cope-with-decommissioning(fd150782-5021-4243-8d30-f3dcfec9abec).html.
Full textCoker, Eric Nicholas. "Ion exchange studies of microporous solids." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47815.
Full textMa, Yiu Wa. "Fixed bed removal of heavy metal ions by chelating ion exchange." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491880.
Full textAdams, Robert Jonathan Watt. "The extraction of caesium and cobalt(II) from solution using inorganic ion exchangers in electrochemical ion exchange." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385171.
Full textHoughton, Mark Phillip. "Polymer-supported reactions using ion-exchange resins." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255343.
Full textAbonijim, M. N. "Ion exchange properties of poly(vinylimidazoline) resins." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381642.
Full textHarsa, Sebnem. "Studies on the ion-exchange of pectinase." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303734.
Full textWillett, Thomas Clifford. "Magnetic adsorbents displaying switchable ion-exchange behaviour." Thesis, University of Birmingham, 2009. http://etheses.bham.ac.uk//id/eprint/507/.
Full textHarries, Richard R. "Water purification by ion exchange mixed beds." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/18591.
Full textAhmed, Manzoor. "Modelling the ion exchange equilibria of proteins." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242335.
Full textCoetzee, Johannes Wilhelm. "The ion exchange phenomenon of acetylene black." Thesis, Cape Technikon, 1996. http://hdl.handle.net/20.500.11838/909.
Full textAcetylene Black IACB) IS a pure form of carbon which is used in the battery, plastics, printing and rubber industries. It is extensively used in the battery industry to absorb electrolyte and to lower the electrical resistance of dry cell batteries. It is the attempt of this thesis, to investigate the surface characteristics '---------._-- -,- ...• -...•--- .. ------.. _.. --- "'- and structure of ACB by using it as an adsorbent for cyanide complexes, in particular gold cyanide. The thesis is predominantly aimed at identifying the mechanism of metal cyanide adsorption onto ACB, viz. ion exchange and/or physical adsorption. In order to quantify the mechanism of adsorption, comparative studies with other adsorbents currently used in the mining industry, such as activated carbon, were conducted. These studies revealed various similarities in the metal adsorption process between ACB and activated carbon, thus indicating physical adsorption rather than ion exchange to be the dominant mechanism for metal adsorption from solution. The rate of metal adsorption onto acetylene black was relatively fast compared to activated carbon. Furthermore, adsorption profiles revealed that intraparticle diffusion was negligible when a metal was adsorbed onto ACB from solution. This indicates that acetylene black has a predominantly amorphous structure, although X-ray diffractrometry indicates a certain degree of graphitisation associated with ACB. The small surface area of ACB, together with the lack of intraparticle diffusion, resulted in the rapid attainment of the equilibrium metal loading on ACB. Moreover, this equilibrium metal loading was far less than that of activated carbon and ionexchange resin. While pH, temperature and strong oxidizing agents had a marked effect on the adsorption profile of metal cyanides onto ACB, the effect of oxygen enrichment and organic solvents was negligible. Furthermore, the adsorption of gold onto ACB is best explained by a Freundlich-type isotherm. As is the case with activated carbon and ion exchange resin, gold is eluted from ACB by a NaOH solution. It was also found that the elution efficiency is influenced by a change in temperature. Changes in operating variables in the production of ACB had an effect on the absorption stiffness of the product. Both an increase in acetylene feed rate and operating temperature reduced the absorption stiffness of the product.
Tailony, Ra'uf. "Ion exchange glass strengthening using microwave processing." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1449764292.
Full textCan, Özge Ülkü Semra. "Ion exchange in natural zeolite packed column/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/kimya/T000607.pdf.
Full textCao, Liming. "Protein Separation with Ion-exchange Membrane Chromatography." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-050405-174109/.
Full textMcKevitt, Bethan Ruth. "Removal of iron by ion exchange from copper electrowinning electrolyte solutions containing antimony and bismuth." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/427.
Full textHuang, Julie Shiong-Jiun. "Ion Chromatography of Soluble Cr(III) and Cr(VI)." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc500410/.
Full textEl-Masri, Nasrein. "Ion-association complexes of thallium and mercury with rhodamine 6G in aqueous solution." Scholarly Commons, 1988. https://scholarlycommons.pacific.edu/uop_etds/2170.
Full textCHARBEL, MARIA Y. "Estudo para a remocao de fluoreto em aguas e efluentes." reponame:Repositório Institucional do IPEN, 1990. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10235.
Full textMade available in DSpace on 2014-10-09T13:59:29Z (GMT). No. of bitstreams: 1 03871.pdf: 2892098 bytes, checksum: 5369857479c6fb9952c9855c38d0ee35 (MD5)
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Borghi, Andrea. "Cellulose hollow fibers membranes for ion-exchange chromatography." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20289/.
Full textKarlsson, Stefan. "Modification of Float Glass Surfaces by Ion Exchange." Doctoral thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-18447.
Full textNoutsios, Peter C. "Optical vertical couplers by ion exchange in glass." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40415.
Full textThe results of the characterization were used in the design and fabrication of a novel vertically integrated optical directional coupler. This device, composed of single-mode surface and buried ion-exchanged waveguides, allows for the optical fiber coupling to the buried guide and efficient power transfer to the surface guide, where the light can be detected by a modelled $GaAs$ photodetector. An improved version of the device using a sputtered $Al sb2O sb3$ surface guide allows for edge coupling to the detector. Calculations of the $GaAs$ absorption coefficient show an optimum behavior for a given thickness of $Al sb2O sb3$.
An implicit finite-difference vector beam propagation method (FD-VBPM), that was improved to account for graded-index profiles, has been developed and used in the design of both directional-coupler structures. Finally, a three-dimensional FD-VBPM algorithm was implemented for the channel-guide version of the improved coupler.
Leonard, Danièle. "Adsorption of bile acids by ion-exchange resins." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74309.
Full textIon-exchange resins were prepared by solid phase peptide synthesis with active sites chosen to resemble those of cholestyramine. They were produced by coupling 4-(aminomethyl)benzoic acid, 4-aminophenylacetic acid or 4-(aminomethyl)phenylacetic acid to the backbone. The ion-exchange resins were prepared both as primary amines and in the quaternized form. The cholestyramine-like sorbents were synthesized with systematic changes in the structure, to determine which structural parts of cholestyramine are involved in the adsorption process. As compared to cholestyramine, both sets of resins were remarkably ineffective in adsorbing bile acids in vitro. It was found that the nature of the backbone determines the accessibility to the active site; that the resins with the methylene group positioned between the phenyl group and the amino group have higher adsorption capacity for glycocholic acid; and that quaternization increases the adsorption capacity. The two latter observations indicate the importance of the basicity of the active site. Therefore, in cholestyramine, the backbone is such that it permits the transfer of ionic species and the quaternary ammonium group is involved in the interaction with bile acids.
Computer modelling showed that the cholestyramine pendants are close to one another and are separated by benzene rings, thus leaving too little space between them to allow a bile acid molecule to interact with the benzene rings. Therefore, the bile acids must interact with the quaternary ammonium group, leaving the bile acid molecule inside the cavity where they interact with one another to form micelles. The possible modes of interactions of bile acids with the synthesized resins are more numerous since the pendants are not as close together. (Abstract shortened by UMI.)
Forster, Christine. "Aspects of charge exchange in ion-atom collisions." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/6189/.
Full textParker, Karen Elizabeth. "Calculating ion exchange parameters from pure clay assemblages." Thesis, University of Birmingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422780.
Full textEmms, Tony. "Ion exchange and separations in high silica zeolites." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244886.
Full textPrice, S. G. "Kinetics of ion exchange in a chelating resin." Thesis, Open University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234132.
Full textAddo, Martin Adomako. "Developments in ion exchange media for protein separation." Thesis, University of Bath, 1988. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760580.
Full textNtemi, Pascal Vitalis. "Taste masking of clarithromycin with ion exchange resins." Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/65178.
Full textDzyazko, Yu S., L. N. Ponomareva, Yu M. Volfkovich, V. N. Belyakov, V. E. Sosenkin, N. F. Nikolskaya, N. N. Scherbatyuk, and Yu A. Litvinenko. "Hybrid organic-inorganic nanocomposites for ion-exchange processes." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20577.
Full textAmini, Adib. "The Sustainability of Ion Exchange Water Treatment Technology." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6640.
Full text