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›› 2009, Vol. 9 ›› Issue (4): 683-688.

• 反应与分离 • Previous Articles     Next Articles

Three-phase Extraction of Zn2+ and Mn2+ from Their Sulfate Solution

JIN Sheng-chao, CHANG Zhi-dong, WANG Kang, HUA Chao, YU Pin-hua, LIU Hui-zhou, LIU Hui-zhou,   

  1. Key Lab. Green Process Eng., Inst. Process Eng.,Chinese Academy of Sciences State Key Laboratory of Biochemical Engineering, Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2008-11-28 Revised:2009-03-17 Online:2009-08-20 Published:2009-08-20
  • Contact: CHANG Zhi-dong,

由锌锰硫酸溶液三相萃取锌锰离子

金声超 常志东 王康 华超 于品华 刘会洲 刘会洲   

  1. 中国科学院过程工程研究所绿色过程与工程重点实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室 中国科学院过程工程研究所分离工程与工程青年实验室
  • 通讯作者: 常志东

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Abstract: Three-liquid-phase extraction system (O-W1-W2) was formed by P204 dissolved in kerosene (oil phase, O), PEG 10000 solution (first water phase, W1) and ammonium sulfate solution including Zn2+ and Mn2+ (second water phase, W2). Its extraction of Zn2+ and Mn2+ was compared with solvent extraction (O-W'2, sulfate solution of Zn2+ and Mn2+ as W'2) and aqueous two-phase system (W1-W2). The results showed that after adding KSCN, O-W1-W2 could separate Zn2+ and Mn2+ at one step effectively. Increasing molar ratio of SCN- to Zn2+ from 10 to 60, W1 phase only extracted Zn2+ and the total extraction rate of Zn2+ in O-W1-W2 (90%) was higher than that of O-W'2 and W1-W2 (52.8% and 86.2% respectively). Extraction rate of Mn2+ in O phase was higher than that of O-W'2 (10.2%).

Key words: three-liquid-phase extraction system, extraction and separation, zinc and manganese

摘要： 以P204煤油溶液(油相，O)、PEG 10000水溶液(水相1，W1)及锌锰离子的硫酸铵盐溶液(水相2，W2)构建三相萃取体系(O-W1-W2)，将其对锌锰离子的萃取效率与传统溶剂萃取[O-W'2(锌锰硫酸溶液)]和双水相萃取(W1-W2)作了比较. 结果表明，加入KSCN后，三相体系能有效地一步分离锌锰离子. 将SCN-/Zn2+摩尔比由10增大至60，W1相只富集Zn2+，且Zn2+总的萃取率(90%)高于O-W'2(52.8%)和W1-W2(86.2%)，O相对Mn2+的萃取率(28%)高于O-W1(10.2%).

关键词: 三相萃取体系, 萃取分离, 锌锰离子

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