Floatation separation of germanium （Ⅳ） in potassium iodide-tetrabutyl ammonium bromide-aqueous systemChinese Full Text
ZHONG Li;SI Xue-zhi;MA Dong-dong;LI Yu-ling;MA Wan-shan;College of Chemistry and Chemical Engineering,Xinyang Normal University;College of Chemistry and Chemical Engineering,Henan University of Technology;
Abstract: The behavior and conditions for flotation and separation of germanium （Ⅳ） from other metal ions were investigated with potassium iodide（KI）-tetrabutyl ammonium bromide（TBAB）-aqueous system.The results showed that,in aqueous solutions,germanium （Ⅳ） combined with KI and TBAB into a insoluble ternary-association compound[GeI62-][TBAB+]2,which was floated well on the surface of aqueous phase to form liquid-solid biphase with a distinct boundary layer.Germanium （Ⅳ） could be quantiatively separated from Ce（Ⅲ）、Cr（Ⅱ）、Ni（Ⅱ）、Mg（Ⅱ）、Fe（Ⅱ）、Zn（Ⅱ）、Sn（Ⅳ）、Zr（Ⅳ）、V（Ⅴ）、Co（Ⅱ）、Mo（Ⅵ）、Mn（Ⅱ）、Al（Ⅲ）、W（Ⅵ）、Ga（Ⅲ）、Rh（Ⅲ）、U（Ⅵ）、La（Ⅲ）and Ti（Ⅳ） at pH 2when the concentrations of TBAB and KI in the solution were 9.0×10-4 mol/L and 3.0×10-2 mol/L,respectively.This method was applied for the separation and determination of germanium （Ⅳ） in synthetic water sample,the floatation yields of germanium （Ⅳ） were 97.8%-100%.
- DOI：
10.13228/j.issn.1000-7571.2014.06.017
- Series：
- Subject：
- Classification Code：
O652.6;O614.431
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