5种中药油水分离超滤工艺的主要影响因素考察

Main Influence Factors on Oil-water Separation by Ultrafiltration of Five Kinds of Traditional Chinese Medicine

采用截留分子量为50 000的聚醚砜膜(PES-5W)对陈皮、豆蔻仁、藿香、肉桂和蛇床子五味中药含油水体进行超滤,富集挥发油。考察了操作参数和不同种类含油水体对超滤工艺的影响。以膜时通量和化学需氧量(COD)截留率为因变量,采用SPSS软件进行相关性分析和多元线性回归分析。结果显示,操作压力、含油水体的电导率对膜时通量影响较显著(P<0.01);含油水体的pH对COD截留率影响较显著(P<0.01)。

The volatile oil of five kinds of traditional Chinese medicine （Pericarpium Cirri rrticulatae, Fructus Amoral rotundus, Herba Agastache rugosa, Cortex Cinamomi cassiae and Fructus Cnidii） were enriched from corresponding oil-bearing water by ultrafiltration with polyethersulfone （PES） membrane （MWCO 50 000）. The influences of operating parameters and the kinds of oil-bearing water on ultrafiltration process were investigated. The correlation and multiple linear regression analysis were carried out by SPSS software with membrane flux and interception ratio of chemical oxygen demand （COD） as dependent variables. The results showed that the operation pressure and conductivity of oil-bearing water had the significant influence on membrane flux （P〈0.01） and the pH value of oil-bearing water had a significant influence on interception ratio of COD （P〈0.01）.