SORPTION OF NON-FERROUS METALS IONS RECOVERY FROM MULTICOMPONENT SOLUTIONS BY KU-2-8 CATION EXCHANGER AND ITS FOREIGN ANALOGUES

This article presents the results of experimental research on wastewater treatment from ions of heavy and non-ferrous metals by ion exchange adsorption. The object of investigation was a model solution containing ions of heavy and non-ferrous metals and prepared of wastewater from Turkestan locomotive depot. As a sorbent, phosphorus–acidic cationite KRF-10P was used. The impact of the cation exchanger mass, reaction time of cationite and temperature of the solution on the degree of wastewater treatment from ions of heavy and non-ferrous metals (Zn2+, Pb2+, Cd2+) were studied. On the basis of experiments, optimal conditions of wastewater treatment from ions of heavy and non-ferrous metals were established: mKRF-10P = 2.0 g, t = 1.0 h, T = 55°C. At the optimized conditions, the degree of wastewater treatment from zinc ions reached 96.1%, the degree of removal of lead ions reached 89%, the degree of removal of cadmium ions reached 95%. Experimental results showed the possibility of wastewater treatment from ions of heavy and nonferrous metals by ion exchange adsorption using phosphorus–acidic cationite KRF-10P.

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Synthesis and investigation of properties of new chelate sorbent for water purification

Doklady of the National Academy of Sciences of Belarus ◽

10.29235/1561-8323-2019-63-3-298-303 ◽

2019 ◽

Vol 63 (3) ◽

pp. 298-303

Author(s):

V. I. Grachek ◽

A. P. Polikarpov ◽

A. A. Shunkevich ◽

R. V. Martsynkevich ◽

O. I. Isakovich

Keyword(s):

Aqueous Solution ◽

Aqueous Solutions ◽

Vapor Phase ◽

Water Purification ◽

Cation Exchanger ◽

Ion Exchanger ◽

Ferrous Metals ◽

Non Ferrous Metals ◽

Effective Sorbent ◽

Nitron Fiber

Polymer analogous transformations of a “nitron” fiber were established and a new amino carboxylic fibrous cation exchanger FIBAN X-2 was obtained. It is shown that FIBAN X-2 is an effective sorbent of heavy and non-ferrous metals from multi-ionic aqueous solutions, regardless of the method of fiber amination. The cation exchanger obtained by amination of a “nitron” fiber in the vapor phase absorbs Mn+2 twice as much as the ion exchanger obtained by amination in the aqueous solution.

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Sorption properties of new fibrous chelate ion exchanger

Proceedings of the National Academy of Sciences of Belarus Chemical Series ◽

10.29235/1561-8331-2020-56-2-206-211 ◽

2020 ◽

Vol 56 (2) ◽

pp. 206-211

Author(s):

V. I. Grachek ◽

A. A. Shunkevich ◽

A. P. Polikarpov ◽

O. I. Isakovich

Keyword(s):

Cation Exchanger ◽

Elevated Temperatures ◽

Polypropylene Fiber ◽

Ion Exchanger ◽

Sorption Properties ◽

Grafted Copolymer ◽

High Speeds ◽

Ferrous Metals ◽

Non Ferrous Metals ◽

Effective Sorbent

The sorption properties of new iminodiacetate fibrous cation exchanger FIBAN XC-1 synthesized on a chemically resistant matrix of polypropylene fiber with a grafted copolymer of styrene and divinylbenzene, which can withstand elevated temperatures and aggressive environments, were studied. It was shown that the fibrous chelate ion exchanger FIBAN XC-1 is an effective sorbent of heavy and non-ferrous metals from multi-ionic aqueous solutions under static and dynamic conditions. It was found that the cation exchanger operates at high speeds up to 20 column volumes / min in water purification from copper and lead ions (purification from Cu2+ – 82 % and purification from Pb2+– 65 %). It was found that the fibrous chelate ion exchanger FIBAN XC-1 is easily regenerated and does not lose its sorption and mechanical properties in the sorption– regeneration cycles.

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