Solvent extraction in cross-flow multipass parallel-plate membrane modules of fixed configuration |
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| Institution: | 1. Institute of Resources and Environmental Engineering, State Environment Protection Key Laboratory of Efficient Utilization of Coal Waste Resources, Shanxi University, Taiyuan 030006, China;2. Shanxi Polytechnic College, Taiyuan 030006, China;1. Qinghai University, Xining 810010, China;2. Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xining 810008, China;3. Shanghai Institute of organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China;4. University of Chinese Academy of Sciences, Beijing 10049, China |
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| Abstract: | The effect of multipass arrangement on membrane extraction through a cross-flow rectangular module has been investigated both theoretically and experimentally. In contrast to a single-pass device, improvement in mass transfer is obtained if cross-flow membrane extraction is operated in a multipass device of same configuration. It is concluded that multipass effect which provides the increase of fluid velocity, can enhance mass transfer, especially for concentrated solution with high distribution coefficient where the liquid-phase mass-transfer resistances are more extremely predominant. |
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