Solvent extraction of uranium(VI) with benzyloctadecyldimethylammonium chloride (BODMAC) from highly concentrated chloride solution

Guo Jin-xin; Sun Si-xiu; Zhu Rong-xiu; Yin Zhi-lei; Yu Hai-yun; Li Da-zhi; Zhang Wei-min; Xu Xian-gang; Sun Xuan; Shao Hua

doi:10.1023/b:jrnc.0000030961.78224.57

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 261: Issue 1

Solvent extraction of uranium(VI) with benzyloctadecyldimethylammonium chloride (BODMAC) from highly concentrated chloride solution

Authors:

Guo Jin-xin

Guo Jin-xin Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Sun Si-xiu

Sun Si-xiu Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Zhu Rong-xiu

Zhu Rong-xiu Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Yin Zhi-lei

Yin Zhi-lei Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Yu Hai-yun

Yu Hai-yun Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Li Da-zhi

Li Da-zhi Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Zhang Wei-min

Zhang Wei-min Shandong University Jinan School of Chemical and Chemical Engineering 250100 P.R. China

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Xu Xian-gang

Xu Xian-gang Shandong University Jinan State Key Lab of Crystal Materials 250100 P.R. China

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Sun Xuan

Sun Xuan Guangdong Esquel Textile Company Ltd Fushan 528515 P.R. China

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, and

Shao Hua

Shao Hua Directorate of Petrochemical Industry of Shandong Division of Industrial Administration Jinan P.R. China

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Pages:: 221–224

Online Publication Date:: 28 Oct 2004

Publication Date:: 01 Jul 2004

Article Category:: Research Article

DOI:: https://doi.org/10.1023/b:jrnc.0000030961.78224.57

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Abstract

The mechanism of solvent extraction of uranium(VI) from highly concentrated chloride solution with a quaternary ammonium salt, benzyloctadecyldimethylammonium chloride (BODMAC, R₄NCl), dissolved in chloroform was studied. The compositions of the extracted species were R₄N^.UO₂Cl₃ and (R₄N)₂^.UO₂Cl₄. The extraction process is exothermic (ΔH° = -8.42±0.54 KJ/mol). Kex₁ and Kex₂ are calculated to be (3.62±0.55)^.10^-2 and (1.06±0.17)^.10³, respectively. In the extraction process, a W/O uranium(VI) rich emulsion solution has been formed between the organic and aqueous phases, its volume increased with the increase of BODMAC in the system. The influences of temperature, NaCl, MgCl₂ and MgSO₄ concentrations on the extraction equilibrium were also studied.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)