Mechanism of strontium sorption by the mixed nickel-potassium ferrocyanide based on hydrated titanium dioxide / Voronina A. V.,Semenishchev V. S. // JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. - 2016. - V. 307, l. 1. - P. 577-590.

ISSN/EISSN:

0236-5731 / 1588-2780

Type:

Article

Abstract:

The influence of surface modification of hydrated titanium dioxide (HTD) by mixed nickel-potassium ferrocyanide (NPF) phase on its selectivity for strontium and mechanism of strontium sorption was studied. It was shown that NPF-HTD sorbent possesses the same selectivity for strontium as the HTD sorbent, but higher static exchange capacity (SEC). The Henry distribution coefficient of strontium from a tap water with pH 7.8 +/- 0.1 was 10((3.0 +/- 0.3)) L kg(-1); the SEC, calculated according to Langmuir's isotherm, was 140 mg g(-1). Kinetic studies have shown that strontium sorption is limited by both internal and external diffusion as well as by the rate of chemical transformation of the NPF-HTD sorbent.

Author keywords:

Radioactive waste; Strontium; Sorbents; Hydrated titanium dioxide; Ferrocyanide; Sorption mechanism IMMOBILIZATION; RADIONUCLIDES; CESIUM

DOI:

10.1007/s10967-015-4197-z

Web of Science ID:

ISI:000372264900070

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
EISSN	1588-2780
Keywords-Plus	IMMOBILIZATION; RADIONUCLIDES; CESIUM
Research-Areas	Chemistry; Nuclear Science \& Technology
Web-of-Science-Categories	Chemistry, Analytical; Chemistry, Inorganic \& Nuclear; Nuclear Science \& Technology
Author-Email	av.voronina@mail.ru
Funding-Acknowledgement	Ministry of education and science of Russian Federation {[}14.581.21.0002]
Funding-Text	The study was supported by The Ministry of education and science of Russian Federation, Project No. 14.581.21.0002 of the Federal Targeting Program ``Researches and developments in priority directions of Russian scientific and technological complex in 2014-2020{''}.
Number-of-Cited-References	23
Usage-Count-Since-2013	10
Journal-ISO	J. Radioanal. Nucl. Chem.
Doc-Delivery-Number	DG7LD