The extraction of zinc(II) by Cyanex 923 (phosphine oxides mixture) in Solvesso 100 from hydrochloric acid solution has been investigated. The extraction reaction is exothermic. The numerical analysis of metal distribution data suggests the formation of ZnCl2.L-2,HZnCl3. 2L and H2ZnCl4. 2L(L = ligand) in the organic phase with formation constants K-ext = 4.1,5.6 x 10(9) and 6.7 x 10(9), respectively. The results obtained for zinc(II) distribution have been implemented in a solid-supported liquid membrane system. The influence of source phase stirring speed, membrane composition and metal concentration on zinc transport have been investigated. (C) 2001 Society of Chemical Industry.
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Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
Chen, Long
Dang, Weiqi
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Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
Dang, Weiqi
Lin, Xiaohui
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Hunan Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Two Dimens Mat, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
Lin, Xiaohui
Chen, Gen
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Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
机构:
State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization
State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied Chemistry,Chinese Academy of SciencesState Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization
Dan Zou
Hailian Li
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State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied Chemistry,Chinese Academy of SciencesState Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization
Hailian Li
Ji Chen
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State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied Chemistry,Chinese Academy of SciencesState Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization
Ji Chen
Deqian Li
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State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied Chemistry,Chinese Academy of SciencesState Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization