中药水提液真空膜蒸馏过程中膜通量衰减及清洗方法  

Membrane flux attenuation and cleaning methods during vacuum membrane distillation for Chinese herbs water extraction

作　　者：杨晨[1,2] 石飞燕[1,2] 潘林梅[1,2] 李博[1,2] 郭立玮[1,2] 朱华旭[1,2] 

机构地区：[1]南京中医药大学江苏省中药资源产业化过程协同创新中心,江苏南京210023 [2]南京中医药大学江苏省植物药深加工工程中心,江苏南京210023

出　　处：《中成药》2016年第8期1722-1726,共5页Chinese Traditional Patent Medicine

基　　金：国家自然科学基金(81274096;30873449);江苏省科技厅自然科学基金项目(BK 2012855;BK20141465);江苏省科技厅产学研联合创新资金--前瞻性研究项目(BY 2012036);江苏省高校优势学科建设工程资助项目(PAPD);江苏省中药资源产业化过程协同创新中心项目(ZDXM)

摘　　要：目的研究中药水提液真空膜蒸馏过程中的膜通量衰减和清洗方法。方法选择代表性中药(黄芩、白芍、二丁颗粒)水提液,通过恒浓、浓缩实验分析膜通量衰减。以通量恢复率和膜表面结构变化为指标,考察不同清洗方法对聚偏氟乙烯疏水膜的效果。结果与吸附污染相比,浓度变化对膜通量的影响更大。酸碱液结合的清洗效果最好,通量恢复率可达97.98%;超声波清洗会破坏膜的表面结构,使通量恢复率大于100%。结论酸碱液(0.3%氢氧化钠+0.3%柠檬酸)结合更适合用于清洗聚偏氟乙烯疏水膜。AIM To study the membrane flux attenuation and cleaning methods during vacuum membrane dis- tillation for Chinese herbs water extraction. METHODS During the water extraction of Chinese herbs （Scutellaria baicalensis Georgi, Paeonia lactiflora Pall. ） and formulated medicine （Erding Granules）, the membrane flux at- tenuation was analyzed by constant concentration and concentration experiments. As revealed by the indices of re- covery rate of flux and change of membrane surface structure, the effects of different cleaning methods on polyvinyl- idene fluoride hydrophobic membrane were investigated. RESULTS Compared with fouling adsorption, concen- tration changes contributed more on membrane flux. The combination of acid and alkali solutions were found to have the best cleaning effect with a flux recovery rate of 97.98% , while ultrasonic cleaning damaging the membrane sur- face structure had a flux recovery rate of more than 100%. CONCLUSION The combination of acid and alkali solutions （0.3% sodium hydrate ＋ 0.3% citric acid） takes priority in cleaning polyvinylidene fluoride hydrophobic membrane.

关 键 词：中药水提液 聚偏氟乙烯疏水膜 真空膜蒸馏 膜通量衰减 清洗方法 

分 类 号：TQ028.8[化学工程]