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

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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). Kex 1 and Kex 2 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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Authors and Affiliations

  1. School of Chemical and Chemical Engineering, Shandong University Jinan, 250100, P.R. China

    Guo Jin-xin, Sun Si-xiu, Zhu Rong-xiu, Yin Zhi-lei, Yu Hai-yun, Li Da-zhi & Zhang Wei-min

  2. State Key Lab of Crystal Materials, Shandong University Jinan, 250100, P.R. China

    Xu Xian-gang

  3. Guangdong Esquel Textile Company Ltd, Fushan, 528515, P.R. China

    Sun Xuan

  4. Division of Industrial Administration, Directorate of Petrochemical Industry of Shandong, Jinan, P.R. China

    Shao Hua

Authors
  1. Guo Jin-xin
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  2. Sun Si-xiu
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  3. Zhu Rong-xiu
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  4. Yin Zhi-lei
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  5. Yu Hai-yun
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  6. Li Da-zhi
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  7. Zhang Wei-min
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  8. Xu Xian-gang
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  9. Sun Xuan
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  10. Shao Hua
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Jin-xin, G., Si-xiu, S., Rong-xiu, Z. et al. Solvent extraction of uranium(VI) with benzyloctadecyldimethylammonium chloride (BODMAC) from highly concentrated chloride solution. Journal of Radioanalytical and Nuclear Chemistry 261, 221–224 (2004). https://doi.org/10.1023/B:JRNC.0000030961.78224.57

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  • DOI: https://doi.org/10.1023/B:JRNC.0000030961.78224.57

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