【摘要】 以浓差极化-凝胶层数学模型为基础,研究了影响糖化酶超滤速度的各种因素。结果表明:在浓差极化现象存在下,超滤速度随透出液体积和主体溶液浓度的增大而减小,随搅拌速度或料液流速的增大而增大。提高操作压力不会增大超滤速度。对糖化酶发酵液进行絮凝处理及适当提高温度都有利于超滤速度的提高。更多还原

【Abstract】 Based on concentration polarization-gel layer mathematical model, effects of various factors on ultrafiltration flux rate of glucoamylase solution have been studied. Experimental results show that with the build-up of the gel-polarization layer, flux rate decreases with the increasing permeate volume and bulk concentration, and increases with the increasing stirring rate and fluid flow velocity across the membrane. Increasing the operating pressure has no positive effect on flux rate. Flocculation and moderately increasing the temperature will enhance the ultrafiltration flux rate of glucoamylase broth.更多还原