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首页> 外文期刊>Separation and Purification Technology >Dehydration of ethyl acetate-water mixtures using PVA/ceramic composite pervaporation membrane
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Dehydration of ethyl acetate-water mixtures using PVA/ceramic composite pervaporation membrane

机译：使用PVA /陶瓷复合渗透汽化膜对乙酸乙酯-水混合物进行脱水

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摘要

Dehydration of ethyl acetate (EAC)-water mixtures by pervaporation (PV) was studied using a ceramic-supported polyvinyl alcohol (PVA) composite membrane. The effects of feed temperature, feed water content and feed flow rate on the PV performance of the membrane were systematically investigated. In addition, swelling experiments were performed to evaluate the sorption characteristic of the membrane. Flory-Huggins and NRTL (non-random two liquid) theories were applied to analyze the interactions of the membrane and penetrants and the mutual interaction between the penetrants. The membrane exhibited high PV performance, the water permeance and selectivity of water to EAC were 1.45 x 10~(-5) kgm~(-2) s~(-1) kPa~(-1) and 129, respectively, at 60°C with the feed water content of 5.1 wt% and the feed flow rate of 252 mL min~(-1).
机译：使用陶瓷支撑的聚乙烯醇（PVA）复合膜，研究了通过全蒸发（PV）进行的乙酸乙酯（EAC）-水混合物的脱水。系统地研究了进料温度，进水量和进料流速对膜PV性能的影响。另外，进行溶胀实验以评价膜的吸附特性。应用Flory-Huggins和NRTL（非随机两种液体）理论来分析膜与渗透剂之间的相互作用以及渗透剂之间的相互作用。该膜具有较高的PV性能，在60℃时的水透过率和对EAC的水选择性分别为1.45 x 10〜（-5）kgm〜（-2）s〜（-1）kPa〜（-1）和129。进料水含量为5.1 wt％，进料流速为252 mL min〜（-1）。

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