Citation: Liang Pei, Li Ming Wang. Study on supported combined liquid membrane containing HEH(EH)P and HNO₃ for trivalent gadolinium transfer[J]. Chinese Chemical Letters, ;2011, 22(9): 1095-1098. doi: 10.1016/j.cclet.2011.03.020 shu

Study on supported combined liquid membrane containing HEH(EH)P and HNO₃ for trivalent gadolinium transfer

Liang Pei ^a,b, ,
Li Ming Wang ^b

a Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
b Faculty of Water Resources and Hydraulic Power, Xi'an University of Technology, Xi'an 710048, China

Received Date: 27 December 2010

Fund Project: No.51009126) and Research Fund for Excellent Doctoral Thesis of Xi'an University of Technology (No.602-210805This work is financially supported by the Foundation for Planning project of West Action of Chinese Academy of Sciences (No.KZCX2-XB2-13), the National Natural Science Foundation of China for Young Scientists (No.41001131No.602-210804).

A novel kind of supported combined liquid membrane (SCLM) has been studied for the Gd (Ⅲ) transfer. SCLM contained polyvinylidene fluoride membrane (PVDF) as the liquid membrane support and renewal solution including HNO₃ solution as the stripping solution and 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester (HEH (EH)P) as the carrier dissolved in kerosene. The mixed solution of carrier and kerosene was membrane solution. The optimum transport conditions of Gd (Ⅲ) were that concentration of HNO₃ solution was 4.00 mol/L, concentration of carrier was 0.16 mol/L, and volume ratio of membrane solution to stripping solution was 30:30 of the renewal phase, and pH value was 4.80 of the feed phase. Under the optimum condition studied, when initial concentration of Gd (Ⅲ) was 1.00×10^-4 mol/L, the transfer rate of Gd (Ⅲ) was 96.8% during 130 min.
- Supported combined liquid membrane,
- 2-Ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester,
- Renewal phase,
- Gadolinium
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