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

页码：95 / 100

页数：6

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