摘要
研究了利用PES超滤膜处理杨木自催化乙醇法蒸煮废液时,膜通量及膜滤阻力的变化规律,分析了超滤过程中的膜截留分子质量、温度、乙醇浓度、压力、搅拌速度等因素对超滤过程的影响,确定超滤过程的最佳操作条件:PES膜截留相对分子质量1.0×104,压力0.20 MPa,搅拌速度600 r/min,温度30℃;研究结果表明膜污染主要是由膜面颗粒沉积层决定的。
Treatment of auto-catalyzed ethanol-water pulping black liquor of aspen by PES ultrafiltration membrane and the change rules of membrane flux and filtrating resistance were studied. The effects of some factors on ultrafiltration process were investigated, such as membrane withholded molecular weight, temperature, ethanol concentration, pressure, stiring speed and so on. The optimal operating conditions in ultrafiltration process were decided. The experiment results indicated that the membrane concentration is mainly caused by the granule sediment on the membrane surface. In the ultrafiltration process, the membrane molecular weigh cut off is 10000. The pressure is 0.2 MPa, the stiring speed is 600 r/min, the temperature is 30℃.
出处
《中国造纸学报》
EI
CAS
CSCD
2008年第4期53-57,共5页
Transactions of China Pulp and Paper
基金
辽宁省教育厅资助项目(20060157)
关键词
自催化乙醇法
超滤
膜通量
污染阻力
auto-catalyzed ethanol-water pulping
ultrafihration
membrane flux
