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Separation Science and Technology Volume 55, 2020 - Issue 16
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Membrane

Comparative study of solvent extraction and supported liquid membrane for the extraction of gallium (III) from chloride solution using organophosphorus acids as extractants

Haitao Zhoua Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR ChinaView further author information
,
Xiuli Zhanga Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR ChinaView further author information
,
Tianran Lva Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR ChinaView further author information
,
Qingjie Guoa Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China;b State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, PR ChinaView further author information
&
Lingyun Wanga Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR ChinaCorrespondence[email protected]
View further author information
Pages 3012-3027 | Received 09 Jun 2019, Accepted 03 Sep 2019, Published online: 11 Sep 2019
 
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ABSTRACT

The transport of Ga(III) from chloride solution by supported liquid membrane (SLM) using organophosphorus acids as carriers was studied and compared with solvent extraction results. The diffusion coefficient, permeability coefficient and mass transfer resistance for both processes were analyzed by investigating various parameters, such as flow pattern, flow rate, pH, Ga(III)/extractant concentration and temperature. Under optimized conditions, the extraction percentage of 97.0% and permeability coefficient of 9.22 × 10−6 m/s was achieved for SLM process. Kinetic modeling was proposed to determine the mass diffusion coefficient of Ga(III) complex across the membrane and stability of this SLM system was also examined.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [21706141]; Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering [2018-K40]; National Key R&D Program [2018YFB06050401].

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