Relevant bibliographies by topics / Ion exchange processes

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Ion exchange processes'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 May 2022

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Journal articles on the topic "Ion exchange processes"

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Dyer, A. "Ion-exchange processes." TrAC Trends in Analytical Chemistry 10, no. 1 (January 1991): 7–8. http://dx.doi.org/10.1016/0165-9936(91)85037-r.

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Sengupta, Arup K., and Lois Lim. "Modeling chromate ion-exchange processes." AIChE Journal 34, no. 12 (December 1988): 2019–29. http://dx.doi.org/10.1002/aic.690341211.

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Pismenskaya, Natalia, and Victor Nikonenko. "Ion-Exchange Membranes and Processes." Membranes 11, no. 11 (October 26, 2021): 814. http://dx.doi.org/10.3390/membranes11110814.

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Kedem, O., and L. Bromberg. "Ion-exchange membranes in extraction processes." Journal of Membrane Science 78, no. 3 (April 1993): 255–64. http://dx.doi.org/10.1016/0376-7388(93)80005-i.

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Hajiev, S. N., S. V. Kertman, U. A. Leykin, and A. N. Amelin. "Thermochemical study of ion-exchange processes." Thermochimica Acta 139 (March 1989): 327–32. http://dx.doi.org/10.1016/0040-6031(89)87032-7.

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Sherry, Howard. "The design of ion-exchange processes." Zeolites 13, no. 5 (June 1993): 377–83. http://dx.doi.org/10.1016/0144-2449(93)90153-t.

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Fernández, A., M. Díaz, and A. Rodrigues. "Kinetic mechanisms in ion exchange processes." Chemical Engineering Journal and the Biochemical Engineering Journal 57, no. 1 (March 1995): 17–25. http://dx.doi.org/10.1016/0923-0467(94)02865-8.

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Pismenskaya, Natalia, and Semyon Mareev. "Ion-Exchange Membranes and Processes (Volume II)." Membranes 11, no. 11 (October 26, 2021): 816. http://dx.doi.org/10.3390/membranes11110816.

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Гомеля, М. Д., A. I. Петриченко, Г. Г. Трохименко, and Я. П. Мартинюк. "Research processes of ion exchange removal phosphates." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 21, no. 1 (May 10, 2017): 12–23. http://dx.doi.org/10.20535/2218-93002112017121427.

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Ramkumar, Jayshree, and Tulsi Mukherjee. "Role of Ion exchange in permeation processes." Talanta 71, no. 3 (February 28, 2007): 1054–60. http://dx.doi.org/10.1016/j.talanta.2006.05.082.

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Dissertations / Theses on the topic "Ion exchange processes"

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Dzyazko, 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.

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Two types of composite ion-exchangers, which are based on strongly acidic gellike cation-exchange resin and zirconium hydrophosphate, have been obtained. The first group contains both inorganic nanoparticles and their aggregates, the second one contains only aggregates. Analysis of differential porogrammes obtained with a method of standard contact porometry allowed us to estimate porous structure both of polymer matrix and inorganic constituent. Each stripe of the porogrammes has been related to structure element of polymer and ZrPh. Geometrical globular model has been applied to estimate a size of nanoparticles. A size of the nanoparticle size was shown to depend on their location: it reaches 16 nm, if the globules are placed in clusters of the polymer matrix, and 36 nm for aggregated nanoparticles in macropores. The results have been confirmed by data of scanning and transmission electron microscopy. Modification of ion-exchange resins causes transformation of porous structure of labile polymer matrix. The transformation occurs both at nano- and micro-levels. Recommendations regarding to structure of composite ion-exchangers for different applications are given. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/20577
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Van, Den Bosch Magali Marie. "Simulation of ion exchange processes using neuro-fuzzy reasoning." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/2161.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2009.
Neuro-fuzzy computing techniques have been approached and evaluated in areas of process control; researchers have recently begun to evaluate its potential in pattern recognition. Multi-component ion exchange is a non-linear process, which is difficult to model and simulate as there are many factors influencing the chemical process which are not well understood. In the past, empirical isotherm equations were used but there were definite shortcomings resulting in unreliable simulations. In this work, the use of artificial intelligence has therefore been researched to test the effectiveness in simulating ion exchange processes. The branch of artificial intelligence used was the adaptive neuro fuzzy inference system. The objective of this research was to develop a neuro-fuzzy software package to simulate ion exchange processes. The first step towards building this system was to collect data from laboratory scale ion exchange experiments. Different combinations of inputs (e.g. solution concentration, resin loading, impeller speed), were tested to determine whether it was necessary to monitor all available parameters. The software was developed in MSEXCEL where tools like SOLVER could be utilised whilst the code was written in Visual Basic. In order to compare the neuro-fuzzy simulations to previously used empirical methods, the Fritz and Schluender isotherm was used to model and simulate the same data. The results have shown that both methods were adequate but the neuro-fuzzyapproach was the more appropriate method. After completion of this study, it could be concluded that a neuro-fuzzy system does not always have the ability to describe ion exchange processes adequately.
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Hastie, Michele. "Energy and Water Conservation in Biodiesel Purification Processes." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20384.

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Biodiesel purification processes generate wastewater streams that require a large amount of energy when distillation is used as a treatment technology. Process simulation software was used to show that an alternative water treatment process involving ion exchange would require only 31% of the energy used by distillation. Experiments showed that multiple washing stages were required to meet the standard specification for sodium, an impurity present in crude biodiesel, when washing biodiesel made from used frying oil. A comparison was made between washing biodiesel in a cross-current washing configuration and a counter-current configuration. Both configurations met the specification for sodium within three washing stages; however, the counter-current configuration required less water, making it the more efficient process. Lastly, the removal of sodium from wastewater samples using an ion exchange resin was experimentally investigated. The results validated the use of ion exchange to reduce energy consumption in biodiesel purification.
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Steinwinder, Thomas Riemann Zhao Dongye. "Engineered treatment of As-laden regeneration brine from ion exchange processes." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/STEINWINDER_THOMAS_33.pdf.

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Yip, Ngai Yin. "Sustainable Production of Water and Energy with Osmotically-Driven Membrane Processes and Ion-Exchange Membrane Processes." Thesis, Yale University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3582181.

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The world population of the 21st century is facing an increasingly challenging energy landscape and declining water quality and availability, further compounded by a rapidly expanding global population against the backdrop of climate change. To meet the challenges of the water-energy nexus in a sustainable manner, existing methods need to be advanced and new technologies developed. Osmotically-driven and ion-exchange membrane processes are two classes of emerging technologies that can offer cost-effective and environmentally sensible solutions to alleviate the pressure on our water and energy demands. The objective of this thesis is to advance forward osmosis (FO), pressure retarded osmosis (PRO), and reverse electrodialysis (RED) for the sustainable production of water and energy.

A main hindrance restricting the progress of osmotically-driven membrane processes, FO and PRO, is the absence of adequate membranes. This work demonstrates the fabrication of thin-film composite polyamide FO membranes that can attain high water flux and PRO membranes capable of achieving power density of 10 W/m2, twice the benchmark of 5 W/m2 for PRO with natural salinity gradients to be cost-effective. A membrane fabrication platform based on mechanistic understanding of the influence of membrane transport and structural parameters on process performance was developed. The morphology and microstructure of the porous support layer, and hydraulic permeability and salt selectivity of the polyamide active layer were specifically tailored by thoughtful control of the fabrication and modification conditions.

The Gibbs free energy from the mixing of river water with seawater can potentially be harnessed for clean and renewable energy production. This work analyzed the thermodynamics of PRO power generation and determined that energy efficiencies of up to ∼91% can theoretically be attained. The intrinsic limitations and practical constraints in PRO were identified and discussed. Using a tenth of the annual global river water discharge of 37,000 km 3 for PRO could potentially produce electricity for over half a billion people, ascertaining natural salinity gradients to be a sizeable renewable source that can contribute to diversifying our energy portfolio.

However, fouling of the membrane support layer can diminish the PRO productivity by detrimentally increasing the hydraulic resistance. Analysis of the water flux behavior and methodical characterization of the membrane properties shed light on the fouling mechanism and revealed the active-support layer interface to play a crucial role during fouling. A brief osmotic backwash was shown to be effective in cleaning the membrane and achieving substantial performance recovery.

Reverse electrodialysis (RED) is an ion-exchange membrane process that can also extract useful work from salinity gradients. This dissertation research examined the energy efficiency and power density of RED and identified a tradeoff relation between the two performance parameters. Energy efficiency of ∼33-44% can be obtained with technologically-available membranes, but the low power densities of < 1 W/m2 is likely to be impede the realization of the process. To further advance RED as a salinity energy conversion method, ion-exchange membrane technology and stack design need to be advanced beyond their current limitations.

When analyzed with simulated existing state-of-the-art membranes, PRO exhibited greater energy efficiencies (54-56%) and significantly higher power densities (2.4-38 W/m2) than RED (18-38% and 0.77-1.2 W/m 2). The drawback of RED is especially pronounced at large salinity gradients, where the high solution concentrations overwhelm the Donnan exclusion effect and detrimentally diminish the ion exchange membrane permselectivity. Additionally, the inherent different in driving force utilization (osmotic pressure difference for PRO and Nernst potential for RED) restricts RED from exploiting larger salinity gradients to enhance performance. Overall, PRO is found to be the more favorable membrane-based technology for accessing salinity energy.

This work presents pioneering advances for forward osmosis and pressure retarded osmosis membrane development. The fundamental studies of the osmotically-driven membrane processes and ion-exchange membrane processes yielded significant findings that enhanced our mechanistic and thermodynamic understanding of the technologies. The important insights can serve to inform the realization of the emerging membrane-based technologies for the sustainable production of water and energy. The implications of the thesis are potentially far-reaching and are anticipated to shape the discussion on FO, PRO, and RED.

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Bhumgara, Zubin Godrej. "A study of the development of polyhipe foam materials for use in separation processes." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263147.

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Marinetti, Andrea. "Recovery of Carboxylic acids from anaerobic fermented broth through ionic exchange processes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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The recovery of Carboxylic acids were based on two particular objective: the study of the efficiency of a cation exchange resin, used in order to reduce the pH of the actual effluent, considering it is necessary to have a low pH for the anion exchange resin to be able to adsorb the acids from the effluent, and the preliminary studies perfomerd on the anion exchange resin, at various flow rates and both mode of operation, expanded and packed bed mode, using a simulated effluent, were the carboxylic acids were represented by just acetic acid, as the target molecule.
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Tervonen, Ari. "Optical waveguides by ion exchange in glass fabrication processes for integrated optics applications /." Helsinki : Finnish Society of Sciences and Letters, 1990. http://catalog.hathitrust.org/api/volumes/oclc/35476660.html.

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Naughton, Elise Michele. "Ru,Rh,Ru Supramolecular Photocatalysts within Nafion® Membranes: Ion-exchange, Photoelectrolysis and Electron Transfer Processes." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70865.

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Perfluorosulfonate ionomers, such as Nafion® have been shown to demonstrate a profound affinity for large cationic complexes, and the study of polymer-bound cations may provide insight regarding Nafion® morphology by contrasting molecular size with existing models. The trimetallic complex, [{(bpy)2Ru(dpp)}2RhBr2] 5+, is readily absorbed by ion exchange into Na+ -form Nafion® membranes under ambient conditions. The dimensions of three different isomers of the trimetallic complex are estimated to be: 23.6 Å × 13.3 Å × 10.8 Å, 18.9 Å × 18.0 Å × 13.7 Å, and 23.1 Å × 12.0 Å × 11.4 Å, yielding an average molecular volume of 1.2×103 Å3 . At equilibrium, the partition coefficient for the ion-exchange of the trimetallic complex into Nafion® from a DMF solution is 5.7 × 103 . Furthermore, the total cationic charge of the exchanged trimetallic complexes counterbalances 86 ± 2% of the anionic SO3 − sites in Nafion®. The characteristic dimensions of morphological models for the ionic domains in Nafion® are comparable to the molecular dimensions of the large mixedmetal complexes. Surprisingly, SAXS analysis indicates that the complexes absorb into the ionic domains of Nafion® without significantly changing the ionomer morphology. Given the profound affinity for absorption of these large cationic molecules, a more open-channel model for the morphology of perfluorosulfonate ionomers is more reasonable, in agreement with recent experimental findings. In contrast to smaller monometallic complexes, the time- v dependent uptake of the large trimetallic cations is biexponential. This behavior is attributed to a fast initial ion-exchange process on the surface of the membrane, accompanied by a slower, transport-limited ion-exchange for sites in the interior of the ionomer matrix. The development of Nafion®/[{(bpy)2Ru(dpp)}2RhBr2] 5+ modified electrodes is also described for both FTO electrodes and materials made from electrospun carbon mats. The [{(bpy)2Ru(dpp)}2RhBr2] 5+ complexes behave as photocatalytic hydrogen production catalysts in the Nafion® membrane. Furthermore, a second bulk photoelectrolysis experiment with the Nafion®/[{(bpy)2Ru(dpp)}2RhBr2] 5+/FTO electrodes shows an enhancement of catalytic activity compared to the first photoelectrolysis experiment. This enhancement is attributed to halide loss following the first reduction process. Lastly, electrospun carbon nanofiber mats behave as electron donor materials for [{(bpy)2Ru(dpp)}2RhBr2] 5+/Nafion® membranes.
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Payne, Karl A. "Mathematical and Numerical Modeling of Hybrid Adsorption and Biological Treatment Systems for Enhanced Nitrogen Removal." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7702.

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High nutrient loading into groundwater and surface water systems has deleterious impacts on the environment, such as eutrophication, decimation of fish populations, and oxygen depletion. Conventional onsite wastewater treatment systems (OWTS) and various waste streams with high ammonium (NH4+) concentrations present a challenge, due the inconsistent performance of environmental biotechnologies aimed at managing nutrients from these sources. Biological nitrogen removal (BNR) is commonly used in batch or packed-bed reactor configurations for nitrogen removal from various waste streams. In recognition of the need for resource recovery, algal photobioreactors are another type of environmental biotechnology with the potential for simultaneously treating wastewater while recovering energy. However, irrespective of the technology adopted, outstanding issues remain that affect the consistent performance of environmental biotechnologies for nitrogen removal and resource recovery. In OWTS, transient loading can lead to inconsistent nitrogen removal efficiency, while the presence of high free ammonia (FA) can exert inhibitory effects on microorganisms that mediate transformation of nitrogen species as well as microalgae that utilize nitrogen. Therefore, to overcome these challenges there have been experimental studies investigating the addition of adsorption and ion exchange (IX) media that can temporarily take up specific nitrogen ions. Bioreactors comprised of microorganisms and adsorption/IX media can attenuate transient loading as well as mitigate inhibitory effects on microorganisms and microalgae; however, the interplay between physicochemical and processes in these systems is not well understood. Therefore, the main objective of this dissertation was to develop theoretical and numerical models that elucidate the complex interactions that influence the fate of chemical species in the bioreactors. To achieve this objective and address the issues related to improving the understanding of the underlying mechanisms occurring within the environmental biotechnologies investigated, the following three research studies were done: (i) experimental and theoretical modeling studies of an IX-assisted nitrification process for treatment of high NH4+ strength wastewater (Chapter 3), (ii) theoretical and numerical modeling of a hybrid algal photosynthesis and ion exchange (HAPIX) process for NH4+ removal and resource recovery (Chapter 4), and (iii) mathematical and numerical modeling of a mixotrophic denitrification process for nitrate (NO3-) removal under transient inflow conditions (Chapter 5). The experimental results for the IX-assisted nitrification process showed that by amending the bioreactor with zeolite, there was a marked increase in the nitrification rate as evidenced by an increase in NO3– production from an initial concentration of 3.7 mg-N L-1 to 160 mg-N L-1. This increase is approximately an order of magnitude greater than the increase in the reactor without chabazite. Therefore, the experimental studies provided support for the hypothesis that IX enhances the nitrification process. To garner further support for the hypothesis and better understand the mechanisms in the bioreactor, a novel mathematical model was developed that mechanistically describes IX kinetics by surface diffusion coupled with a nitrification inhibition model described by the Andrews equation. The agreement between the model and data suggests that the mathematical model developed provides a theoretically sound conceptual understanding of IX-assisted nitrification. A model based on the physics of Fickian diffusion, IX chemistry, and algal growth with co-limiting factors including NH4+, light irradiance, and temperature was developed to describe a batch reactor comprised of microalgae and zeolite. The model can reproduce the temporal history of NH4+ in the reactor as well as the growth of microalgae biomass. The mathematical model developed for the HAPIX process balances between simplicity and accuracy to provide a sound theoretical framework for mechanisms involved. In OWTS, transient inflow conditions have an influence on the performance of environmental biotechnologies for nitrogen removal. Prior experiments have shown that for denitrification, a tire-sulfur hybrid adsorption and denitrification (T-SHAD) bioreactor consistently removes nitrogen under varying influent flow and concentration conditions. To enhance the understanding of the underlying mechanisms in the T-SHAD bioreactor, a mathematical model describing mass transport of NO3- and SO42- in the aqueous phase and mixotrophic denitrification was developed. Additionally, a numerical tool to solve the mathematical model was implemented and compared to previously conducted experiments. Results from the numerical simulations capture the trend of the experimental data showing approximately 90% NO3- -N removal under varying flow conditions. Moreover, the model describes the effluent characteristics of the process showing a transient response in correspondence the changes in fluid velocity. The new tools developed provide new insight into the underlying mechanisms of physical, chemical, and biological processes within these bioreactors. The tools developed in this dissertation have a potential broad impact in environmental biotechnology for wastewater treatment in on-site systems, for treatment of high strength wastewater, and can be extended easily for stormwater management systems aimed at mitigating high nutrient loading to the environment.
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Books on the topic "Ion exchange processes"

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Ion-exchange membrane separation processes. Amsterdam: Elsevier, 2004.

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SenGupta, Arup K. Ion Exchange in Environmental Processes. Hoboken, New Jersey: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119421252.

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1937-, Brouillard F., and North Atlantic Treaty Organization. Scientific Affairs Division., eds. Atomic processes in electron-ion and ion-ion collisions. New York: Plenum Press, 1986.

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Institute), Ion-Ex '93 Conference (1993 North East Wales. Ion exchange processes: Advances and applications : [the proceedings of the Ion-Ex '93 Conference held at the North East Wales Institute in Wrexham, UK, April 4th-7th, 1993]. Cambridge [England]: Royal Society of Chemistry, 1993.

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A, Brown Richard. Impact of anion exchange pre-treatment on downstream processes. Denver, CO: Water Research Foundation, 2011.

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Ion exchange treatment of water. Denver, CO: American Water Works Association, 2005.

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Łucjan, Pawłowski, ed. Wastewater treatment by ion-exchange. London: Spon, 1987.

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Wachinski, Anthony M. Ion exchange treatment of water. Denver, CO: American Water Works Association, 2006.

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Wachinski, Anthony M. Ion exchange treatment for water. Denver, CO: American Water Works Association, 2006.

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Tanaka, Yoshinobu. Ion exchange membrane electrodialysis fundamentals, desalination, separation. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Book chapters on the topic "Ion exchange processes"

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Chen, J. Paul, Lei Yang, Wun-Jern Ng, Lawrence K. Wang, and Sook-Leng Thong. "Ion Exchange." In Advanced Physicochemical Treatment Processes, 261–92. Totowa, NJ: Humana Press, 2006. http://dx.doi.org/10.1007/978-1-59745-029-4_8.

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Nasef, Mohamed Mahmoud, and Zaini Ujang. "Introduction to Ion Exchange Processes." In Ion Exchange Technology I, 1–39. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-1700-8_1.

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Kimizuka, H., Y. Nagata, and W. Yang. "Ion and Solvent Transports Through Amphoteric Ion Exchange Membrane." In Membranes and Membrane Processes, 85–92. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-2019-5_10.

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Carrà, Sergio. "Reaction Processes Involving Ion-Exchange Resins." In Ion Exchange: Science and Technology, 485–511. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4376-6_18.

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Scott, K. "Ion-exchange and charge driven processes." In Industrial Membrane Separation Technology, 181–257. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0627-6_7.

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Meares, Patrick. "Ion Exchange Membranes: Principles, Production and Processes." In Ion Exchange: Science and Technology, 529–58. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4376-6_20.

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Alberti, G., M. Casciola, U. Costantino, and D. Fabiani. "New Inorganic and Inorganic-Organic Ion-Exchange Membranes." In Membranes and Membrane Processes, 461–73. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-2019-5_46.

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Williams, Robert J. P. "The Importance of Ion Exchange Processes in Living Systems." In Recent Developments in Ion Exchange, 3–15. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0777-5_1.

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Tondeur, D., and G. Grevillot. "Parametric Ion-Exchange Processes (Parametric Pumping and Allied Techniques)." In Ion Exchange: Science and Technology, 369–99. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4376-6_14.

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Janev, R. K. "Theory of Charge Exchange and Ionization in Ion-Atom (Ion) Collisions." In Atomic Processes in Electron-Ion and Ion-Ion Collisions, 239–69. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-5224-2_9.

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Conference papers on the topic "Ion exchange processes"

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Trassl, R. "Ion-ion charge-exchange collisions and applications." In The 12th topical conference on atomic processes in plasmas. AIP, 2000. http://dx.doi.org/10.1063/1.1361787.

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Oya, Takumi, and Suguru Sassa. "Development of ion exchange purification for advanced materials contain siloxane polymer." In Advances in Patterning Materials and Processes XXXVII, edited by Roel Gronheid and Daniel P. Sanders. SPIE, 2020. http://dx.doi.org/10.1117/12.2553654.

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Tervonen, A., S. Honkanen, and M. Leppihalme. "Ion-Exchange Processes In Glass For Fabrication Of Waveguide Couplers." In 1987 Symposium on the Technologies for Optoelectronics, edited by Giancarlo C. Righini and Oliverio D. Soares. SPIE, 1988. http://dx.doi.org/10.1117/12.943465.

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Zelenskii, A. N., S. A. Kokhanovskii, V. G. Polushkin, and K. N. Vishnevskii. "Investigation of spin-exchange processes in the optically polarized ion source." In Production and neutralization of negative ions and beams. AIP, 1990. http://dx.doi.org/10.1063/1.39614.

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Prieto, Xesus, Jesus Linares, and Carlos Montero. "Perturbative method to modelize ion-exchange processes: application to surface waveguides." In Advanced Imaging and Network Technologies, edited by Giancarlo C. Righini. SPIE, 1996. http://dx.doi.org/10.1117/12.262449.

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Braehler, Georg, Ronald Rieck, V. A. Avramenko, V. I. Sergienko, and E. A. Antonov. "Nuclide Separation by Hydrothermal Treatment and Ion Exchange: A Highly Effective Method for Treatment of Liquid Effluents." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59217.

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Liquid low level radioactive effluents, when solidified in e. g. cement matrix, contribute to a significant extent to the waste amount to be disposed of in final repositories. Accordingly, since many years scientists and engineers investigate processes to remove the radioactive nuclides selectively from the effluents, to split the raw solution into two separate fractions: a large fraction with activity concentrations below the limits for free release; and a small fraction, containing the activity in concentrated form on e. g. ion exchanger materials (ion exchange has proven to be the most promising method for such “nuclide separation”). The challenge to be taken up is: When (and this is most often the case) the effluent contains organic materials and complexing agents, the formation of e. g. the 60-Co-EDTA complex prohibits its fixation to the ion exchangers. Accordingly the complexing agent needs to be removed or destroyed. The Institute for Chemistry of the Russian Academy of Sciences has applied the method of hydrothermal treatment (at elevated temperature and pressure, 200 °C, 200 bar), supported by Hydrogen Peroxide oxidation, to allow virtually complete removal of radioactive nuclides on inorganic ion exchangers. Pilot plants have been operated successfully in Russian power stations, and an operational plant has been designed. The method is being extended for an interesting and promising application: spent organic ion exchange resins, loaded up to the medium activity level, represent a serious disposal problem. With the hydrothermal process, in a process cycle, the activity can be stripped from the resins, the organic content is destroyed, and the activity is fixed on an inorganic absorber, well suited for final disposal.
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Shu-Yin Tsao and Chao-Yi Tai. "The development of nano-structured plasmonic composite by two-step ion-exchange processes." In 2012 IEEE 12th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2012. http://dx.doi.org/10.1109/nano.2012.6322190.

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Meychik, N. R., Yu I. Nikolaeva, and M. A. Kushunina. "Ion-exchange properties of root cell walls and their significance for some physiological processes." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-285.

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Marzuki, Ahmad, Seran Daton Gregorius, Ika Widhianingsih, Siti Lestari, and Joko Suryawan. "Planar optical waveguides fabricated by Ag+/K+-Na+ ion exchange in soda lime glass." In INTERNATIONAL CONFERENCE OF CHEMICAL AND MATERIAL ENGINEERING (ICCME) 2015: Green Technology for Sustainable Chemical Products and Processes. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938319.

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Miron, Alexandra Raluca. "USE OF ION EXCHANGE PROCESSES ON WEAK ACID RESINS FOR NICKEL REMOVAL FROM WASTE WATERS." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b51/s20.133.

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Reports on the topic "Ion exchange processes"

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Wallace, R. M. Ion Exchange Membrane Processes. Office of Scientific and Technical Information (OSTI), October 2002. http://dx.doi.org/10.2172/804675.

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McGrail, B. P., D. K. Shuh, J. G. Darab, and D. R. Baer. Ion-exchange processes and mechanisms in glasses. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/13687.

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McGrail, B. Peter, D. R. Baer, J. G. Darab, j. p. Icenhower, and D. K. Shuh. Ion Exchange Processes and Mechanisms in Glasses. Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/829972.

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McGrail, B. P., J. P. Icenhower, J. G. Darab, D. k. Shuh, D. R. Baer, V. Shutthanandan, S. Thevuthasan, et al. Ion-Exchange Processes and Mechanisms in Glasses. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/830030.

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McGrail, B. Peter, and David K. Shuh. Ion-Exchange Processes and Mechanisms in Glasses. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/829970.

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Espinoza, Jacob, Mary Barr, and Wayne Smith. Denitration of Rocky Flats Ion-Exchange Resins: Recommendation of Denitration Processes, October 19, 1995. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/2610.

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Dueker, Michael J. Compound Volatility Processes in EMS Exchange Rates. Federal Reserve Bank of St. Louis, 1994. http://dx.doi.org/10.20955/wp.1994.016.

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Yen, S. N., J. A. Pike, R. A. Jacobs, M. R. Poirier, B. M. Sahawneh, and R. K. Leugemors. Evaluation of Alternate Ion Exchange Designs for CST Non-Elutable Ion Exchange Process. Office of Scientific and Technical Information (OSTI), June 2001. http://dx.doi.org/10.2172/782667.

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Lutes, Christopher, Trent Henderson, Carl Singer, Daniel Garcia, Nicholas Pollack, C. Chiang, and Baohua Gu. Integrated Ion Exchange Regeneration Process for Drinking Water. Fort Belvoir, VA: Defense Technical Information Center, April 2010. http://dx.doi.org/10.21236/ada571600.

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Poirier, M., C. Ferguson, and D. Koopman. RHEOLOGY OF SETTLED SOLIDS IN THE SMALL COLUMN ION EXCHANGE PROCESS. Office of Scientific and Technical Information (OSTI), January 2011. http://dx.doi.org/10.2172/1013044.

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