The effect of the synthesis method on the parameters of pore structure and selectivity of ferrocyanide sorbents based on natural minerals / Voronina Anna V.,Gorbunova Tatiana V.,Semenishchev Vladimir S. // JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. - 2017. - V. 312, l. 2. - P. 241-254.

ISSN/EISSN:

0236-5731 / 1588-2780

Type:

Article

Abstract:

Ferrocyanide sorbents were obtained via thin-layer and surface modification of natural clinoptilolite and marl. The effect of modification method on surface characteristics of these sorbents and their selectivity for cesium was studied. It was shown that the modification resulted in an increase of selectivity of modified ferrocyanide sorbents to cesium as compared with the natural clinoptilolite in presence of Na+, as well as in an increase of cesium distribution coefficients in presence of K+. The nickel-potassium ferrocyanide based on the clinoptilolite showed the highest selectivity for cesium at sodium concentrations of 10(-4)-2 mol L-1: cesium distribution coefficient was lg K (d) = 4.5 +/- 0.4 L kg(-1) and cesium/sodium separation factor was alpha(Cs/Na) = 250. In the presence of NH4 (+), all modified sorbents showed approximately equal selectivity for Cs-137. Probable applications of the sorbents were suggested.

Author keywords:

Clinoptilolite; Surface modification; Ferrocyanides; Sorption; Cesium; Selectivity CESIUM; REMOVAL; CLINOPTILOLITE; SORPTION; ZEOLITES; CS

DOI:

10.1007/s10967-017-5237-7

Web of Science ID:

ISI:000399243100008

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
EISSN	1588-2780
Keywords-Plus	CESIUM; REMOVAL; CLINOPTILOLITE; SORPTION; ZEOLITES; CS
Research-Areas	Chemistry; Nuclear Science \& Technology
Web-of-Science-Categories	Chemistry, Analytical; Chemistry, Inorganic \& Nuclear; Nuclear Science \& Technology
Author-Email	av.voronina@mai.ru
Funding-Acknowledgement	Ministry of Education of the Russian Federation {[}02.G25.31.0210]
Funding-Text	The work was performed under contract with the Ministry of Education of the Russian Federation of April 27, 2016 No. 02.G25.31.0210.
Number-of-Cited-References	35
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	3
Journal-ISO	J. Radioanal. Nucl. Chem.
Doc-Delivery-Number	ES0UO