选用孔径为0.1 μm聚偏氟乙烯(PVDF)微滤膜对酵母悬浮液进行了错流过滤实验.研究了微滤膜上酵母滤饼质量随操作条件的变化规律,并采用熵权法分析各操作条件对微滤膜上酵母滤饼质量的定量贡献.研究结果表明:微滤膜上酵母的滤饼质量在错流过滤过程中随压力、浓度的增加而增加,但随错流速率的增加而减小,而温度对滤饼质量的影响在1.0～3.0g/L浓度范围内是随温度的上升而增加,在4.0～5.0 g/L浓度范围内随温度的升高而减少;膜通量随着温度、压力、错流速率的增加而增加,但是随着酵母悬浮液浓度的增加而减少.操作条件对滤饼质量影响程度的顺序为:压力(0.475 5)＞浓度(0.237 6)＞温度(0.205 4)＞错流速率(0.081 4).
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