Comparative study of solvent extraction and supported liquid membrane for the extraction of gallium (III) from chloride solution using organophosphorus acids as extractants |
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| Authors: | Haitao Zhou Xiuli Zhang Tianran Lv Qingjie Guo |
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| Affiliation: | 1. Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology , Qingdao, PR China;2. Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology , Qingdao, PR China;3. State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University , Yinchuan, PR China |
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| Abstract: | 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. |
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| Keywords: | Gallium(III) Solvent extraction Supported liquid membrane Kinetic modeling Stability |
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