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Experimental Investigation into the Transmembrane Electrical Potential of the Forward Osmosis Membrane Process in Electrolyte Solutions

机译:电解质溶液中正渗透膜过程跨膜电势的实验研究

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摘要

The transmembrane electrical potential (TMEP) in a forward osmosis membrane process with a single electrolyte solution as the draw and feed solutions was investigated by experiments. The effects of membrane orientation, the electrolyte species (KCl, NaCl, MgCl2, and CaCl2), concentration and concentration ratio of solutions at both sides of membrane on water flux and TMEP were investigated. The results showed that the TMEPs at different membrane orientation cannot completely coincide, which confirmed the effect of membrane asymmetry. The ion diffusion coefficients significantly affected the TMEP across the membrane, with different patterns for different electrolytes and concentrations.
机译:通过实验研究了以单一电解质溶液为汲取液和进料液的正向渗透膜工艺中的跨膜电势(TMEP)。研究了膜取向,电解质种类(KCl,NaCl,MgCl2和CaCl2),膜两侧溶液的浓度和浓度比对水通量和TMEP的影响。结果表明,不同膜取向的TMEP不能完全重合,这证实了膜不对称的影响。离子扩散系数显着影响跨膜的TMEP,对不同的电解质和浓度具有不同的模式。

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