CIESC Journal ›› 2005, Vol. 56 ›› Issue (12): 2357-2360.
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SU Meng;WANG Daxin;WANG Xiaolin;Ando Masaaki;Shintani Takuji
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苏萌;王大新;王晓琳;安藤雅明;新谷卓司
Abstract: Investigations have revealed the permeation performance of electrolytes in the separation process by nanofiltration membranes in single salt solutions. However, there is still not much information about the separation process of mixed electrolyte solutions, and by now most of the investigations have been on solutions containing three kinds of ions, in which anions are mostly NO-3, Cl- and SO2-4, and cations are mostly Na+,Ca2+ and Mg2+. In this work, permeation experiments of three kinds of nanofiltration membranes(ESNA 1-LF, ESNA 1 and LES 90) for binary electrolyte solutions(NaNO3, Ca(NO3)2; NaCl, NaNO3; NaCl, Ca(NO3)2; etc.) were carried out, and the interactions between co-ions and counter-ions were investigated.The result showed that the ion with better permeation performance would permeate first,thus depressing the rejection of itself and enhancing the rejection of the co-ion with poor permeation performance. Interaction between co-ions with similar permeation performance was not obvious. Counter-ions influenced each other mainly through the electroneutrality principle.
Key words: 膜分离, 纳滤, 混合电解质
关键词: 膜分离, 纳滤, 混合电解质
SU Meng, WANG Daxin, WANG Xiaolin, Ando Masaaki, Shintani Takuji. Separation performance of nanofiltration membranes for binary electrolyte solutions[J]. CIESC Journal, 2005, 56(12): 2357-2360.
苏萌, 王大新, 王晓琳, 安藤雅明, 新谷卓司. 双组分无机电解质溶液的纳滤膜分离性能 [J]. 化工学报, 2005, 56(12): 2357-2360.
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