Kinetic features of cesium sorption onto a polyfunctional ferrocyanide sorbent / Voronina A.V., Nogovitsyna E.V. // Radiochemistry. - 2015. - V. 57, l. 1. - P. 79-86.

ISSN:

10663622

Type:

Article

Abstract:

The kinetics of cesium sorption onto mixed nickel potassium ferrocyanide supported on hydrated titanium dioxide were studied in different ranges of cesium concentrations. At the cesium concentration in solution from 2 × 10-7 to 5 mg L-1, the sorption rate is determined by external diffusion of cesium ions in solution, heterogeneous ion-exchange reaction, and internal diffusion of cesium in the pore space of the sorbent. The slowest step is the breakdown of sorption colloids and uptake of the released cesium ions by the sorbent. At the cesium concentration in solution higher than 50 mg L-1, the rate-determining step is the precipitation of mixed nickel cesium ferrocyanide in the pore space of the sorbent. © 2015 Pleiades Publishing, Inc.

Author keywords:

cesium; diffusion; ferrocyanide; heterogeneous ion-exchange reaction; hydrated titanium dioxide; kinetics; mechanism; precipitation; sorption; sorption colloids

Index keywords:

нет данных

DOI:

10.1134/S1066362215010129

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923198045&doi=10.1134%2fS1066362215010129&partnerID=40&md5=5ea75311bf79ba17810d653fd72b2823

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923198045&doi=10.1134%2fS1066362215010129&partnerID=40&md5=5ea75311bf79ba17810d653fd72b2823
Affiliations	Yeltsin Ural Federal University, ul. Mira 19, Yekaterinburg, Russian Federation
Author Keywords	cesium; diffusion; ferrocyanide; heterogeneous ion-exchange reaction; hydrated titanium dioxide; kinetics; mechanism; precipitation; sorption; sorption colloids
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Publisher	Maik Nauka Publishing / Springer SBM
CODEN	RDIOE
Language of Original Document	English
Abbreviated Source Title	Radiochemistry
Source	Scopus