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Citation: CHEN Bing-Yi, JIN Hui-Xia, LI Quan-Min, LIU Guo-Guang. Separation of Cadmium Through an Emulsion Liquid Membrane Using Hexadecylamine as Mobile Carrier[J]. Chinese Journal of Applied Chemistry, ;2004, 21(1): 54-57. shu

Separation of Cadmium Through an Emulsion Liquid Membrane Using Hexadecylamine as Mobile Carrier

1.
a College of Chemistry and Environment Science, He'nan Normal University, Key Laboratory of Environment Science and Engineering, Education Commission of He'nan Province, Xinxiang 453002;
2.
b Department of Environment Engineering, Pingdingshan Engineering College, Pingdingshan

Corresponding author: LI Quan-Min,
Received Date: 10 March 2003
Available Online: 29 September 2003
Fund Project: 河南省创新人才工程项目(教高[2001]513号) (教高[2001]513号)

The transportation of Cd(Ⅱ) ions through a liquid membrane comsisted of hexadecylamine(RNH₂), sorbital monooleate(Span 80) and kerosene has been studied as function of concentration of HCl, KI, hexadecylamine, Span 80 and NaOH in the feed, membrane and stripping solutions. The maximum transportation of Cd²⁺ was observed when the liquid membrane is consisted of outer phase 0.010~0.050 mol/L HCl and 0.020 mol/L KI, membrane phase 0.020~0.030 mol/L RNH₂, 3.8%(mass fraction) Span 80 plus kerosene, and inner phase 0.010~0.030 mol/L NaOH. Cadmium ion could be separated completely from Fe(Ⅱ), Zn(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Zn(Ⅱ), Al(Ⅲ), Cr(Ⅳ), Mn(Ⅱ). The transportation mechanism of the metal ions through the membrane has been discussed.
- emulsion liquid membrane,
- separation,
- hexadecylamine,
- cadmium
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