Extraction of uranium (VI) from sulfuric acid solution with TOPO

Yang Yonghui; Sun Sixiu; Xue Shuyun; Yang Yanzhao; Bao Borong

doi:10.1007/bf02386685

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 237: Issue 1-2

Extraction of uranium (VI) from sulfuric acid solution with TOPO

Authors:

Yang Yonghui

Yang Yonghui Shandong University Department of Chemistry Jinan P.R. China

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Sun Sixiu

Sun Sixiu Shandong University Department of Chemistry Jinan P.R. China

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Xue Shuyun

Xue Shuyun Qingdao University Department of Chemistry, Normal College Qingdao P.R. China

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Yang Yanzhao

Yang Yanzhao Shandong University Department of Chemistry Jinan P.R. China

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, and

Bao Borong

Bao Borong Academia Sinica Shanghai Institute of Nuclear Research Shanghai P.R. China

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Pages:: 171–173

Online Publication Date:: 12 Apr 2006

Publication Date:: 17 Nov 1998

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02386685

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Abstract

The extraction of uranium(VI) from sulfuric acid medium with tri-octylphosphine oxide (TOPO) in n-heptane was studied. Accompanied with the increase in the concentration of H₂SO₄, the distribution coefficient of uranium(VI) increased in the region of dilute sulfuric acid. When the concentration of H₂SO₄ surpassed 3.5 mol·dm⁻³, the distribution coefficient of uranium(VI) was at maximum. This result was due to the competition extraction between uranium(VI) and H₂SO₄. From the data, the composition of extracted species and the equilibrium constant of extraction reaction have been evaluated, which were (TOPOH)₂UO₂(SO₄)₂ (TOPO) and 10^7.6±0.15, respectively.

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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)