Removal of lead, cadmium and copper ions from aqueous solutions by using ion exchange resin C 160

Abstract Industrial waste solutions may contain toxic Pb, Cu, Cd and other metal ions. These ions may also be components of leachates in landfills of ores. The toxicity of the ionic forms of these metals is high. For this reason the paper presents the results of studies on one of the methods to reduce their concentration in aqueous solutions. The article presents the results of studies on the removal of Pb2+, Cd2+ and Cu2+ ions from model aqueous solutions with synthetic ion exchange resin C 160 produced by Purolite. The investigated ion exchanger contains sulfonic acid groups (-SO3H) in its structure and is a strongly acidic cation-exchange resin. The range of the studied initial concentrations of the Pb2+, Cd2+ and Cu2+ ions in the solutions was from 6.25 mg/L to 109.39 mg/L. The results confirmed that the used ion exchange resin C160 efficiently removes the above-mentioned ions from the studied solutions. The highest degree of purification was achieved in lead solutions for the assumed range of concentrations and conditions of the ion exchange process. It reached 99.9%. In the case of other solutions, the ion exchange process occurs with lower efficiency, however it remains high and amounts to over 90% for all the ions. The results of research were interpreted on the basis of the Langmuir adsorption model. For each studied ion, sorption capacity of the ion exchange resin increases until the saturation and equilibrium state is reached. Based on the interpretation of the Langmuir equation coefficients, an indication can be made that the studied ion exchange resin has a major sorption capacity towards the copper ions. In their case, the highest value of constant qmax was obtained in the Langmuir isotherm. For Cu2+ ions it was 468.42 mg/g. For Pb2+ and Cd2+ ions, this parameter reached the values of 112.17 mg/g and 31.76 mg/g, respectively. Ion exchange resin C 160 shows the highest affinity for the Pb2+ ions. In this case, the achieved value of coefficient b is highest and equals 1.437 L/mg.

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Amberlite IRC-718 ion chelating resin extraction of hazardous metal Cr (VI) from aqueous solutions: equilibrium and theoretical modeling

Water Science & Technology ◽

10.2166/wst.2021.309 ◽

2021 ◽

Author(s):

Abdelhamid Addala ◽

Moussa Boudiaf ◽

Maria Elektorowicz ◽

Embarek Bentouhami ◽

Yacine Bengeurba

Keyword(s):

Ion Exchange ◽

Aqueous Solutions ◽

Exchange Process ◽

Ion Exchange Resin ◽

Exchange Capacity ◽

Chelating Resin ◽

Exchange Potential ◽

Chromium Vi ◽

Ion Exchange Process ◽

Hazardous Metal

Abstract Under varied conditions, the IRC 718 ion-exchange resin is used to extract chromium (VI) ions from aqueous solutions. On chromium (VI) removal effectiveness, the effects of adsorption dosage, contact time, beginning metal concentration, and pH were examined. The batch ion exchange process reached equilibrium after around 90 minutes of interaction. With an initial chromium (VI) concentration of 0.5 mg/dm3, the pH-dependent ion-exchange mechanism revealed maximal removal in the pH 2.0–10 range . The adsorption mechanism occurs between Cr(VI) determined as the electron acceptor, and IRC 718 determined as the electron donor. The equilibrium ion-exchange potential and ion transfer quantities for Amberlite IRC 718 were calculated using the Langmuir adsorption isotherm model. The overall ion exchange capacity of the resin was determined to be 187.72 mg of chromium (VI)/g of resin at an ideal pH of 6.0.

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Method for the Recovery of Indium from Diluted Bioleaching Solutions

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.262.265 ◽

2017 ◽

Vol 262 ◽

pp. 265-268 ◽

Cited By ~ 2

Author(s):

Radek Vostal ◽

Ute Šingliar ◽

Martin Bertau

Keyword(s):

Solvent Extraction ◽

Ion Exchange ◽

Indium Oxide ◽

Exchange Resin ◽

Exchange Process ◽

Extraction Procedure ◽

Ion Exchange Resin ◽

Ion Exchange Process ◽

Impregnated Resin ◽

Iron And Zinc

Using a commercially available solvent impregnated resin, Lewatit TP272, in an ion exchange process, it was possible to extract up to 90 % indium from a feed containing as little as 1 mg/L indium in the presence of high amounts of impurities, i.e. 1000 mg/L iron and zinc each. It was demonstrated that through gradient regeneration of obtained loaded ion-exchange resin, it is possible to yield a solution containing as much as 400 mg/L indium along with 400 mg/L iron, thereby upgrading its purity more than 600 times. Moreover, it was shown that this solution can be fed into an existing solvent extraction procedure which would yield an indium oxide with more than 99 % purity.

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Effect of Metallization on the Electromechanical Properties of Microfluidically Synthesized Hydrogel Beads

Journal of Fluids Engineering ◽

10.1115/1.4041456 ◽

2018 ◽

Vol 141 (3) ◽

Cited By ~ 1

Author(s):

Kaushik Kudtarkar ◽

Patricia Iglesias ◽

Thomas W. Smith ◽

Michael J. Schertzer

Keyword(s):

Electrical Properties ◽

Ion Exchange ◽

Exchange Resin ◽

Exchange Process ◽

Ion Exchange Resin ◽

Electromechanical Properties ◽

Hydrogel Beads ◽

Ion Exchange Process ◽

Resin Beads ◽

Dielectric Coefficient

This investigation demonstrates that metallization can be used to tailor the electromechanical properties of polymer beads. Rigid ion exchange resin beads and softer microfluidically synthesized polyionic liquid hydrogel beads were metallized using an ion exchange process. Metallization increased bead stiffness and dielectric coefficient while reducing resistivity in all beads examined here. Gold-filled beads were preferable over platinum-filled beads as they generated greater changes in electrical properties with smaller increased stiffness. These properties could be further altered by performing multiple metallization steps, but diminishing returns were observed with each step. Ion exchange resin beads were always stable after multiple metallization steps, but polyionic beads would often rupture when repeatedly compressed. Polyionic beads with higher ionic liquid (IL) content were more fragile, and beads synthesized from monomer solutions containing 1% IL were mechanically robust after three metallization steps. These 1% IL beads delivered similar electrical properties as the IONAC beads that also underwent three metallization steps at a significantly reduced stiffness.

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Effect of Cycles and Ion-Exchange on the Purification of Lithium Carbonate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.443-444.594 ◽

2012 ◽

Vol 443-444 ◽

pp. 594-600

Author(s):

Jian Wu ◽

Yao Chun Yao ◽

Yong Nian Dai ◽

Bin Yang

Keyword(s):

Ion Exchange ◽

High Purity ◽

Mother Liquor ◽

Exchange Resin ◽

Exchange Process ◽

Lithium Carbonate ◽

Ion Exchange Resin ◽

Exchange Method ◽

Ion Exchange Process ◽

Industrial Grade

In this study, high-purity Li2CO3 was prepared by carbonation-decomposition and ion-exchange methods using the industrial-grade lithium carbonate, and the effect of cycles and ion-exchange of the mother liquor on purification was investigated. Results showed that the process of cycles can improve the purity and productivity of Li2CO3. The impurities (such as K, Na, Ca and Mg) could be removed in the process. The purity of product decreased and the impurity contents increased after 4 cycles. At the same time, the ion-exchange process by D412 resin was used to deeply remove the residual Ca and Mg after the simple carbonation-decomposition and cycle process. The comparison of different flowing speed of solution through the ion-exchange resin indicated that the low flowing speed was beneficial for the deep removal of the Ca and Mg. considering the problem of efficiency, the flowing speed of 10-20 ml/min was appropriate. The high purity and productivity of Li2CO3 indicated that the carbonation-decomposition method combining with the mother liquor cycles and ion-exchange method has a good perspective in the field of lithium carbonate purification.

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Copper recovery from chalcopyrite flotation plant tailings acid leach using ion exchange resin dowtm XUS 43578.00

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.23.12752 ◽

2018 ◽

Vol 7 (2.23) ◽

pp. 317

Author(s):

Melvin M. Mashingaidze ◽

Catherine N. Shifotoka

Keyword(s):

Ion Exchange ◽

Exchange Resin ◽

Exchange Process ◽

Ammonium Hydroxide ◽

Ion Exchange Resin ◽

Leach Solution ◽

Ammonium Hydroxide Solution ◽

Hydroxide Solution ◽

Ion Exchange Process ◽

Acid Leach

This study examined the feasibility of recovering copper from a sulphuric acid leach solution of chalcopyrite flotation plant tailings assaying 0.18 % copper and 0.19 % zinc using DOWTM XUS 43578.00 ion exchange resin. Zn2+cations are counter ionsto Cu2+cations during the ion exchange process. Adsorption and desorption tests were conducted on the resin with a leach solution containing26 mg Cu/L and 225 mg Zn/L,under various conditions of pH, DOWTM XUS 43578.00resin dosage, agitation time and eluant(ammonium hydroxide solution) concentration. The DOWTM XUS 43578.00resindemonstrated a high selectivity for copper over zinc, with a separation factor of 30.26 mg/g. The highcopper distribution coefficient of65L2/g2suggeststhe resin can effectively concentrate copper in leach solutions of these particular tailings.A 4M ammonium hydroxide solution yielded the highest copper recoveryat pH 3and0.6gresin dosageafter3hours of agitation. These results can be improved by a pre-treatment step to remove the zinc before the copper ion exchange process, and modifying the experiments to simulate industrial practice by having multi-stage sorption and desorption phases.

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An ion exchange process with thermal regeneration IX. A new type of rapidly reacting ion-exchange resin

Desalination ◽

10.1016/s0011-9164(00)80056-9 ◽

1973 ◽

Vol 13 (3) ◽

pp. 269-285 ◽

Cited By ~ 31

Author(s):

B.A. Bolto ◽

K. Eppinger ◽

A.S. Macpherson ◽

R. Siudak ◽

D.E. Weiss ◽

...

Keyword(s):

Ion Exchange ◽

Exchange Resin ◽

Exchange Process ◽

Ion Exchange Resin ◽

Thermal Regeneration ◽

Ion Exchange Process ◽

New Type

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Ion exchange process in the presence of high sulphate concentration: resin regeneration and spent brine reuse

Water Science & Technology Water Supply ◽

10.2166/ws.2006.791 ◽

2006 ◽

Vol 6 (3) ◽

pp. 35-41 ◽

Cited By ~ 2

Author(s):

R. Baciocchi ◽

A. Chiavola

Keyword(s):

Sodium Chloride ◽

Ion Exchange ◽

Exchange Process ◽

Chloride Concentration ◽

Barium Chloride ◽

Ion Exchange Resin ◽

Mass Action ◽

Sulphate Concentration ◽

Ion Exchange Process ◽

Resin Regeneration

This paper provides new insights on the regeneration step of an ion exchange process for the treatment of surface and ground water characterized by high sulphate concentration. Repeated regeneration of ion exchange resin with a sodium chloride solution (brine) did not alter the resin performances with respect to the fresh one. Besides, neither the sodium chloride concentration of the brine, which was varied between 1 and 3 M, nor the presence of sulphates at concentrations up to 20 g/L in the brine, did notably affect the regeneration efficiency. The brine was effectively treated by adding calcium or barium chloride, in order to remove the sulphates and re-establish the original chloride concentration. Calcium chloride was allowed to obtain up to 70% sulphate precipitation, whereas an almost 100% precipitation efficiency was obtained when barium chloride was used. The precipitation step was described by a model based on the mass action, coupled to the Bromley model for the description of the non-ideal behaviour of the electrolytic solution. This model was shown to give correct, or at least conservative, estimates of the equilibrium sulphate concentration when either calcium or barium chloride was used as precipitating agent.

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Natural zeolites for heavy metals removal from aqueous solutions: Modeling of the fixed bed Ba2+/Na+ ion-exchange process using a mixed phillipsite/chabazite-rich tuff

Chemical Engineering Journal ◽

10.1016/j.cej.2012.12.075 ◽

2013 ◽

Vol 219 ◽

pp. 37-42 ◽

Cited By ~ 28

Author(s):

Francesco Pepe ◽

Bruno de Gennaro ◽

Paolo Aprea ◽

Domenico Caputo

Keyword(s):

Heavy Metals ◽

Ion Exchange ◽

Aqueous Solutions ◽

Exchange Process ◽

Fixed Bed ◽

Natural Zeolites ◽

Heavy Metals Removal ◽

Ion Exchange Process ◽

Metals Removal

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THE STUDY OF SORPTION OF NICKEL, COBALT, COPPER IONS RECOVERY FROM MULTICOMPONENT SOLUTIONS BY VARIOUS ION EXCHANGE RESINS

Вестник Тверского государственного университета. Серия: Химия ◽

10.26456/vtchem2021.1.6 ◽

2021 ◽

pp. 45-52

Author(s):

Людмила Сергеевна Авфукова

Keyword(s):

Ion Exchange ◽

Exchange Resin ◽

Copper Ions ◽

Ion Exchange Resin ◽

Copper Recovery ◽

Nickel Cobalt ◽

Sorption Method ◽

Modern Methods ◽

Exchange Resins ◽

Multicomponent Solutions

Статья посвящена одному из современных методов и технологий извлечения никеля, кобальта и меди из многокомпонентных растворов - сорбционный метод. В качестве сорбентов выступают ионообменная смола КУ-2-8 и хелатообразующие смолы. Рассмотрен один изметодов удаления веществ, сопутствующих, мешающих извлечению ценных компонентов, одним из которых является железо. The paper considers one of the modern methods and technologies of nickel, cobalt and copper recovery from multicomponent solutions; that is a sorption method. KU-2-8 ion exchange resin and chelating resins are present as sorbents. One of the method of substances which prevent removing valuable components is discussed. One of such substance is considered to be iron.

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