电场强化纤维素酶超滤过程研究  

Study of electric field intensified ultrafiltration process on cellulase solution

作　　者：宋伟杰[1] 陈国强[1] 齐本坤[1] 苏仪[1] 万印华[1] 

机构地区：[1]中国科学院过程工程研究所生化工程国家重点实验室,北京100190

出　　处：《化学工程》2011年第6期98-102,共5页Chemical Engineering(China)

摘　　要：将电场强化膜技术应用于纤维素酶超滤过程,在截留相对分子质量为10 000的聚醚砜(PES)超滤膜上分别考察了电场对粗酶粉配制的纤维素酶模拟溶液以及秸秆酶解液的超滤过程的影响。实验结果表明,在2种情况下,电场均可以有效提高超滤过程的渗透通量。当电流强度为150 mA时,相对于无电场(0 mA)的条件下,纤维素酶模拟溶液通量可以提高1倍左右;秸秆酶解液通量可以提高75%左右。同时,在纤维素酶超滤的过程中,不同的纤维素酶溶液可以对超滤膜的带电性质和污染状况产生不同的影响。The electric field intensified ultrafiltration process was applied to the treatment of cellulase solution.The effects of electric field on the ultrafiltration process of model crude cellulase solution and wheat straw enzymatic hydrolysate were investigated with 10 000 relative nominal molecular mass cut-off polyethersulfone（PES） membrane.The results show that the electric field can enhance the permeate flux effectively for these two systems.When 150 mA electric field is used,the permeate flux can increase by about 100% for model crude cellulase solution,and about 75% for wheat straw enzymatic hydrolysate compared with ultrafiltration process without electric field（0 mA）.The results also indicate that the different cellulase solution can change the charge characteristic and fouling performance of the ultrafiltration membrane.

关 键 词：电场 纤维素酶 秸秆 超滤 

分 类 号：TQ028.8[化学工程]