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Analysis of the influence factors of cake mass deposition by Entropy method in the crossflow microfiltration of yeast suspensions

Authors： Wang hao1 Wang zhan1* Ma yu2

Units： 1. Beijing Key Laboratory for Green Catalysis and Separation，Department of Chemistry and Chemical Engineering,，Beijing University of Technology，Beijing 100124；2. Climatic Center of Xingjiang Uygur Autonomous Region of China, Urumqi 830002.

KeyWords： Yeast suspensions；Microfiltration membrane；Flitration；Operating conditions；Entropy method

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(4):91-96

Abstract：

The crossflow microfiltration experiment of yeast suspensions was performed by polyvinylidene fluoride (PVDF) membrane with 0.1μm average pore size in crossflow microfiltration. The change of the mass of cake layer deposition and permeation flux with operating conditions was studied. A entropy method was used to study the contribution of different operation conditions on the mass of cake layer deposition of yeast suspensions．The result showed that the mass of cake layer deposition increased with the increasing of feed concentration and operation pressure and decreased with the increase of crossflow velocity. It's worth noting that the mass of cake layer deposition increased with the increase of the operation temperature in the range of feed concentration 1.0～3.0g/L and then decreased in the range of feed concentration 4.0～5.0g/L. Operating temperature，pressure and crossflow velocity have a positive contribution to permeate flux．But the feed concentration has a negative contribution to permeate flow．The sequence and influence degrees of operation conditions on the mass of cake layer deposition were transmembrane pressure (0.4755) > concentration (0.2376) > temperature (0.2054) > crossflow velocity (0.0814).

Funds：

国家自然科学基金(21476006)；国家自然科学基金(21176006)

AuthorIntro：

第一作者简介：王浩（1992-），男，河北邢台市人，硕士生，从事膜污染及其控制技术研究，Email:perfectwanghao@emails.bjut.edu.cn.*通讯作者：Email: wangzh@bjut.edu.cn.

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