Effect of Coagulation Bath Temperature During Preparation of PES Hollow Fiber Supported Liquid Membrane for Acetic Acid Removal

Chemical Engineering Research Bulletin Pub Date : 2017-09-10 DOI:10.3329/CERB.V19I0.33805

S. Sanmugam, N. Harruddin, S. M. Saufi

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引用次数: 6

Abstract

Acetic acid is a byproduct of acid hydrolysis of biomass during sugar recovery step in biofuel production. Acetic acid can inhibit the enzyme used during fermentation of sugar to the ethanol. Hollow fiber supported liquid membrane (SLM) was used in this study to remove acetic acid from aqueous solution. Liquid membrane was formulated using trioctylamine and 2-ethyl hexanol as a carrier and solvent, respectively. The hollow fiber membrane support was prepared from 15 wt.% polyethersulfone, 42.5 wt.% polyethyleneglycol 200 and 42.5 wt.% dimethylacetamide. The effect of coagulation bath temperature (CBT) at 30 o C, 40 o C and 50 o C during hollow fiber membrane spinning process was investigated. The porosity of the membrane increased as the CBT increased. The porosity of the membrane prepared using CBT of 30oC, 40 o C and 50 o C were 35.7%, 46.7% and 61.6%, respectively. SLM process using hollow fiber membrane prepared at 50oC of coagulation bath was able to remove 52% of acetic acid from the aqueous solution. Chemical Engineering Research Bulletin 19(2017) 118-122

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混凝浴温度对制备PES中空纤维支撑液膜除乙酸效果的影响

醋酸是生物燃料生产中糖回收过程中生物质酸水解的副产物。醋酸可以抑制糖发酵成乙醇过程中使用的酶。采用中空纤维支撑液膜(SLM)去除水溶液中的乙酸。以三辛基胺为载体，以2-乙基己醇为溶剂配制液膜。以15wt .%聚醚砜、42.5 wt.%聚乙二醇200和42.5 wt.%二甲基乙酰胺为原料制备中空纤维膜载体。研究了30℃、40℃和50℃凝固浴温度对中空纤维膜纺丝工艺的影响。膜的孔隙率随CBT的增加而增加。采用30℃、40℃和50℃的CBT法制备的膜的孔隙率分别为35.7%、46.7%和61.6%。在50℃的混凝浴条件下制备中空纤维膜，采用SLM工艺可去除水溶液中52%的乙酸。化工研究通报19(2017)118-122

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Chemical Engineering Research Bulletin

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