Composition, structure, and functional properties of organomineral composite sorbents KU-2x8-ZnS and KU-2x8-PbS / Bobylev A. E.,Markov V. F.,Maskaeva L. N.,Chufarov A. Yu. // RUSSIAN JOURNAL OF APPLIED CHEMISTRY. - 2014. - V. 87, l. 5. - P. 572-578.

ISSN/EISSN:

1070-4272 / 1608-3296

Type:

Article

Abstract:

Organomineral composite sorbents KU-2x8-ZnS and KU-2x8-PbS were synthesized on the basis of the matrix of a strongly acidic KU-2x8 cation exchanger. Scanning electron microscopy and elemental analysis were used to study their microstructure and chemical composition. With the use of potentiometric titration, their bifunctional nature was revealed and the dissociation constants and the total exchange capacities of the ionogenic groups were determined. The sorption of copper(II), zinc, and cadmium by KU-2x8-ZnS and KU-2x8-PbS sorbents from 0.005 M solutions of their salts was examined. The total dynamic sorption capacity of the composite sorbents for the above metals, found in the study, exceeds similar values for the individual KU-2x8 cation exchanger by a factor of 1.6-2.0 and that in 0.001-0.050 M solutions of potassium and calcium chlorides, by a factor of 1.3-4.5. An explanation is suggested for the sorption process of heavy nonferrous metals on composite sorbents with an active sulfide component by the mechanism of coordination copolymerization.

Author keywords:

IONS

DOI:

10.1134/S1070427214050061

Web of Science ID:

ISI:000340381300006

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3296
Keywords-Plus	IONS
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Applied
Author-Email	bobvl@el.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-03-96093]; Government of the Russian Federation {[}211, 02.A03.21.0006]
Funding-Text	The study was supported by the Russian Foundation for Basic Research (grant no. 13-03-96093 for the Urals) and by Program no. 211 of the Government of the Russian Federation (no. 02.A03.21.0006).
Number-of-Cited-References	17
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	5
Journal-ISO	Russ. J. Appl. Chem.
Doc-Delivery-Number	AN1ZA