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Relevant bibliographies by topics / Ion exchange resins – Effect of temperature on

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Academic literature on the topic 'Ion exchange resins – Effect of temperature on'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Ion exchange resins – Effect of temperature on"

1

Ren, Xin Lin, Ping Long, Jian Wu, Xiu Min Chen, and Bin Yang. "Removal of Sodium Ions from the Mother Liquor of Sodium Fluorosilicate by Ion Exchange Method." Advanced Materials Research 726-731 (August 2013): 2742–46. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2742.

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Ion exchange method was used to remove the sodium ions from the mother liquor of sodium fluorosilicate in this study. Some experiments were done at different conditions of the amount of 732 resin, reaction temperature and time. At the same time, the regeneration method of 732 resins and the effect of removing sodium ions of the regenerative resins were investigated either. The optimum conditions were obtained. The result indicated that ion exchange method was feasible. And the resins could be regenerated and reused for many times. Ion exchange method was pollution-free and low cost in the treatment process of mother liquor of sodium fluorosilicate.

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2

Shibukawa, Masami, Masaru Yanagisawa, Ryota Morinaga, et al. "Synergistic effect of temperature and background counterions on ion-exchange equilibria." RSC Advances 8, no. 47 (2018): 26849–56. http://dx.doi.org/10.1039/c8ra03309a.

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3

KANO, Naoki, Daisuke ARAI, and Hiroshi IMAIZUMI. "Effect of Temperature on HTO-Dissociation Determined by Ion Exchange Resins." Analytical Sciences 15, no. 11 (1999): 1071–76. http://dx.doi.org/10.2116/analsci.15.1071.

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4

Urbanowska, Agnieszka, and Małgorzata Kabsch-Korbutowicz. "Ion exchange with macroporous polystyrene resins for the removal of natural organic matter." Water Quality Research Journal 53, no. 4 (2018): 191–204. http://dx.doi.org/10.2166/wqrj.2018.002.

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Abstract Due to the regulations on drinking water quality becoming stricter, it is important to remove natural organic matter (NOM) from water. The ion exchange process that uses synthetic resins is among the many processes that allow it. The suitability of two macroporous polystyrene resins: A100 and BD400FD for the removal of NOM from water and also the integrated process combining ion exchange with ultrafiltration were evaluated. The impact of process set-up and selected water parameters on the treatment effectiveness was compared. XAD resin fractionation was used to characterize removed NOM. The results showed that tested resins can be effectively used to remove NOM from water. Performing the ion exchange in a flow set-up resulted in better purification effects when compared to a batch set-up. The A100 resin was more effective. An increase in pH resulted in a slight decrease in NOM removal efficiency, while an increase in temperature increased it. The use of the integrated process resulted in significant improvements in water quality due to the combined effect. Fractional analysis showed a change in the treated water composition when compared to raw samples. Preferential removal of higher molecular weight hydrophobic fractions and also poor hydrophilic fractions elimination were observed.

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5

Tschirner, Sarah, Eric Weingart, Linda Teevs, and Ulf Prüße. "Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural (HMF) in Low-Boiling Solvent Hexafluoroisopropanol (HFIP)." Molecules 23, no. 8 (2018): 1866. http://dx.doi.org/10.3390/molecules23081866.

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A mixture of hexafluoroisopropanol (HFIP) and water was used as a new and unknown monophasic reaction solvent for fructose dehydration in order to produce HMF. HFIP is a low-boiling fluorous alcohol (b.p. 58 °C). Hence, HFIP can be recovered cost efficiently by distillation. Different ion-exchange resins were screened for the HFIP/water system in batch experiments. The best results were obtained for acidic macroporous ion-exchange resins, and high HMF yields up to 70% were achieved. The effects of various reaction conditions like initial fructose concentration, catalyst concentration, water content in HFIP, temperature and influence of the catalyst particle size were evaluated. Up to 76% HMF yield was attained at optimized reaction conditions for high initial fructose concentration of 0.5 M (90 g/L). The ion-exchange resin can simply be recovered by filtration and reused several times. This reaction system with HFIP/water as solvent and the ion-exchange resin Lewatit K2420 as catalyst shows excellent performance for HMF synthesis.

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6

Severo Jr., João Batista, Roberto Rodrigues de Souza, José Carlos Curvelo Santana, and Elias Basile Tambourgi. "A study of ion-exchange chromatography in an expanded bed for bovine albumin recovery." Brazilian Archives of Biology and Technology 52, no. 2 (2009): 427–36. http://dx.doi.org/10.1590/s1516-89132009000200021.

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In the present work, the effect of bed expansion on BSA adsorption on Amberlite IRA 410 ion-exchange resin was studied. The hydrodynamic behavior of an expanded bed adsorption column on effects of the biomolecules and salt addition and temperature were studied to optimize the conditions for BSA recovery on ion-exchange resin. Residence time distribution showed that HEPT, axial dispersion and the Pecletl number increased with temperature and bed height, bed voidage and linear velocity. The binding capacity of the resin increased with bed height. The Amberlite IRA 410 ion-exchange showed an affinity for BSA with a recovery yield of 78.36 % of total protein.

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7

KRAUSE, H. H., and D. RAMLAL. "IN SITU NUTRIENT EXTRACTION BY RESIN FROM FORESTED, CLEAR-CUT AND SITE-PREPARED SOIL." Canadian Journal of Soil Science 67, no. 4 (1987): 943–52. http://dx.doi.org/10.4141/cjss87-089.

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Anion and cation resins were tested as sinks for nutrient ions under variable forest soil conditions. The resins, contained in nylon bags, were placed for periods of 4 wk below the forest floor of a softwood stand, and at approximately 7.5 cm depth on an adjacent clearcut with two different types of site preparation for tree planting. The soil was an Orthic Humo-ferric Podzol. Ion sorption below the forest floor, especially the sorption of ammonium, nitrate and phosphate, was strongly increased after clear-cutting of the forest. Sorption rates were generally lower in the mineral soil than immediately below the forest floor, except for nitrate and sulphate. Mixing of forest floor materials and fine logging debris into the mineral surface horizons generally increased resin sorption if compared to sorption in soil from which the forest floor had been removed. Resin sorption also revealed strong seasonal effects which may have been caused by changes in soil temperature and moisture. Key words: Ion exchange resin, forest soil fertility, seasonal nutrient fluctuation, site preparation

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8

Guilera, Jordi, Eliana Ramírez, Carles Fité, Montserrat Iborra, and Javier Tejero. "Thermal stability and water effect on ion-exchange resins in ethyl octyl ether production at high temperature." Applied Catalysis A: General 467 (October 2013): 301–9. http://dx.doi.org/10.1016/j.apcata.2013.07.024.

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9

Ekinci, Emine Kaya, Gamze Gündüz, and Nuray Oktar. "Activity Comparison of Acidic Resins in the Production of Valuable Glycerol Acetates." International Journal of Chemical Reactor Engineering 14, no. 1 (2016): 309–14. http://dx.doi.org/10.1515/ijcre-2015-0012.

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AbstractAcetates of glycerol have been produced in a heterogeneous reaction system using acidic ion-exchange resin catalysts; Amberlyst-15 (A-15), Amberlyst-16 (A-16), Amberlyst-36 (A-36), Amberlite-IR 120 (A-IR 120) and Relite-EXC8D (R-EXC8D). Effect of reaction temperature on glycerol conversion and product (mono, di and tri glycerol acetates) selectivities were investigated via reaction experiments conducted with glycerol to acetic acid initial molar ratio (G/Ac) of 1/6. Increase in glycerol conversion with an increase in temperature was observed for all catalysts. Among the catalysts investigated, R-EXC8D exhibited the highest activity in the temperature range of 95–150°C. Reaction was completed within a 25 minute short time period.

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10

Brodén, K., and S. Wingefors. "The effect of temperature on water uptake, swelling and void formation in a bitumen matrix with ion exchange resins." Waste Management 12, no. 1 (1992): 23–27. http://dx.doi.org/10.1016/0956-053x(92)90005-4.

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