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首页> 外文期刊>Separation and Purification Technology >Recovery of fumaric acid by hollow-fiber supported liquid membrane with strip dispersion using trialkylamine carrier
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Recovery of fumaric acid by hollow-fiber supported liquid membrane with strip dispersion using trialkylamine carrier

机译：用三烷基胺载体通过带分散的中空纤维支撑液膜回收富马酸

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摘要

This paper presents the transport of fumaric acid(FA)from an aqueous feed solution through a hollow-fiber supported liquid membrane(HFSLM)with strip dispersion.Trialkylamine(N7301)was used as carrier.Many factors having strong impacts on the extraction characteristics of the system were studied in detail,including the characteristics of feed and strip solutions,the composition of membrane solvent phase and the operating conditions.Membrane solvents were chosen from different chemical classes(four"inert"solvents:o-xylene,toluene,benzene,n-dodecane;and three"active"solvents or co-solvents:polar solvent n-octanol,electron donating solvent methyl isobutyl ketone-MIBK,and electron accepting solvent chloroform).And the Hansen solubility parameter theory was applied to analyze the influence of different solvents on the transport of fumaric acid.At the optimum operating condition,the extraction of FA reached 89.5% and the total TOC removal rate was 96.5%.FA crystal was obtained by acidification of the sodium fumarate solution.The total mass transfer coefficient was modeled and the modeling result agreed well with the experimental result.After five consecutive transport studies without reimpregnation of the carrier,the extraction remained fairly constant and no significant loss of the membrane solution was observed.
机译：本文介绍了富马酸（FA）从饲料水溶液中通过带状分散体的中空纤维支撑液膜（HFSLM）的传输，以三烷基胺（N7301）为载体，许多因素对富马酸的提取特性有重要影响。对系统进行了详细的研究，包括进料和汽提溶液的特性，膜溶剂相的组成和操作条件。膜溶剂选自不同的化学类别（四种“惰性”溶剂：邻二甲苯，甲苯，苯，正十二烷;以及三种“活性”溶剂或助溶剂：极性溶剂正辛醇，给电子溶剂甲基异丁基酮-MIBK和电子接受溶剂氯仿）。并使用Hansen溶解度参数理论分析了在最佳操作条件下，FA的提取率达到89.5％，总TOC去除率为96.5％。对富马酸钠溶液中的n进行了建模，模拟了总传质系数，模拟结果与实验结果吻合良好。经过五次连续运输研究，未重新浸渍载体，萃取过程保持相当恒定，膜溶液没有明显损失观测到的。

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