Dynamics of the Sorption of Copper(II) and Silver(I) by Materials Based on Sulfoethylchitosan with Various Degrees of Crosslinking / Petrova Yu. S.,Pestov A. V.,Alifkhanova L. M. K.,Neudachina L. K. // RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A. - 2017. - V. 91, l. 4. - P. 766-770.

ISSN/EISSN:

0036-0244 / 1531-863X

Type:

Article

Abstract:

Optimum conditions of the dynamic concentration of copper(II) and silver(I) ions simultaneously present in a solution with N-(2-sulfoethyl) chitosan with a degree of modification equal to 0.5 and different degrees of crosslinking by glutaraldehyde are determined. The values of coefficients of selectivity K-Ag/Cu are determined under dynamic conditions. It is shown that the selectivity of the sorption of silver(I) increases (compared to copper(II)) as the degree of crosslinking of sorbents based on N-(2-sulfoethyl) chitosan is raised. Mathematical treatment of the obtained dynamic curves is performed according to the Thomas, Adams-Bohart, and Yoon and Nelson models. As a result, the values of dynamic capacity of sorbents, the rate constant of the reaction, and the release time of 50\% of the sorbate are determined. The quantitative desorption of copper and silver from the surface of sorbents is achieved by using 1 mol/dm(3) solution of nitric acid.

Author keywords:

copper; silver; sorption dynamics; sulfo derivatives; chitosan FIXED-BED COLUMN; AQUEOUS-SOLUTIONS; CHITOSAN; REMOVAL; IONS; ADSORPTION

DOI:

10.1134/S0036024417040215

Web of Science ID:

ISI:000397984100028

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1531-863X
Keywords-Plus	FIXED-BED COLUMN; AQUEOUS-SOLUTIONS; CHITOSAN; REMOVAL; IONS; ADSORPTION
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	petrova.yu.s@mail.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}16-33-00110 mol\_a]; RF Government's 211 Program {[}02.A03.21.0006]
Funding-Text	This work was supported by the Russian Foundation for Basic Research, project no. 16-33-00110 mol\_a; and by the RF Government's 211 Program, project no. 02.A03.21.0006.
Number-of-Cited-References	16
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	4
Journal-ISO	Russ. J. Phys. Chem. A
Doc-Delivery-Number	EQ3PD