微滤
结垢
膜
膜污染
微型多孔材料
过滤(数学)
葡萄酒
材料科学
色谱法
聚苯乙烯
化学工程
化学
聚合物
复合材料
数学
工程类
统计
生物化学
食品科学
作者
Sheung‐Yin Li,Benjamin S. Schon,Jadranka Travaš‐Sejdić
标识
DOI:10.1002/marc.202000303
摘要
Abstract Cross‐flow microfiltration, using a microporous membrane, is a well‐established technique for wine clarification in oenology because of its cost‐effectiveness and high‐throughput. However, membrane fouling remains a significant issue for wine filtration in high‐throughput systems. Herein, an approach for in situ real‐time monitoring of fouling in filtration systems using a conductive filtration membrane and a model fluid for filtration is reported. The membrane is fabricated by embedding poly(3,4‐ethylenedioxythiophene) into an electrospun sulfonated polystyrene‐ block ‐poly(ethylene‐ ran ‐butylene)‐ block ‐polystyrene microporous membrane, producing a conductive microfiltration membrane. Measurement of the resistance of the conductive membrane during filtration with the fouling solutions containing pectin, as one of the major foulants in unfiltered wine and pre‐fermentation grape juice, shows a time‐ and concentration‐dependent response. This work opens a door to new methodology for in situ monitoring of fouling processes in wine and juice filtration systems.
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