SEPARATION OF CADMIUM(II) FROM SPENT NICKEL/CADMIUM BATTERY BY EMULSION LIQUID MEMBRANE

被引：7
|
作者：
Zhang Yanlin [1 ]
Liu Peihong [1 ]
Zhang Qiuyun [1 ]
Cheng Wen [1 ]
机构：
[1] S China Normal Univ, Sch Chem & Environm, Guangzhou, Guangdong, Peoples R China
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2010年 / 88卷 / 01期
关键词：
emulsion liquid membrane; spent nickel/cadmium battery; D2EHPA; separation; AQUEOUS-SOLUTIONS; MOBILE CARRIER; SURFACTANT MEMBRANE; SOLVENT-EXTRACTION; WASTE-WATER; RECOVERY; NICKEL; REMOVAL; D2EHPA; SYSTEM;
D O I：
10.1002/cjce.20251
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Experiments were conducted to investigate the separation of cadmium(II) from spent nickel/cadmium battery by emulsion liquid membrane. Liquid membrane mainly consisted of a diluent (kerosene), a surfactant (Span 80), a carrier (di(2-ethylhexyl) phosphoric acid, D2EHPA) and an internal phase (sulfuric acid). Main research effort was focused on the identification of optimal parameters affecting the separation process, such as D2EHPA (4.4 vol%), Span 80 (6.6 vol%), pH in the external phase (3.0), treat ratio (0.4), agitation time (10 min), and sulfuric acid concentration (1500 mol/m(3)). With the selected emulsion liquid membrane to separate cadmium(II) from the leaching solution of spent nickel/cadmium battery, the fraction extracted of cadmium(II) ions (0.963) was much more than that of nickel(II) ions (0.026). The organic membrane phase after demulsification was re-mulsification and recycled up to eight times.
引用
收藏
页码：95 / 100
页数：6
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