Membrane Science and Technology

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Effects of critical flux operation on Ultrafiltration process of Huanglian

Authors： LIU Hongbo, LI Bo,GUO Liwei

Units： Nanjing university of Chinese medicine,Key Laboratory of Separation Engineering for Chinese Medicine Compound,Nanjing 210029

KeyWords： Chinese herb extractions；Ultrafiltration；Sub-critical flux

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2013, 33(3):81-87

Abstract：

The concept of critical flux is introduced into the complex system of Chinese herb extractions.The critical flux of the traditional Chinese medicine compound Huanglian jiedu decoction is determined in the hollow fiber membrane ultrafiltration process and the sub-critical flux operation status is studied.The results show that under the sub-critical flux operation when the pressure is 0.04 MPa and the cross-flux equals 0.15 m/s,the stable permeate flux is only reduced by 5.5 % compared to the initial flux.However, under the ultra-critical flux operation when the pressure is 0.07 MPa and 0.10 MPa,the values are 32.1 % and 42.2 % respectively.The relative stability fouling resistance under the pressure of 0.04 MPa、0.07 MPa and 0.10 MPa is 3.0、7.5 and 15.8 respectively.Sub-critical flux operation of great significance to optimize the operating conditions to reduce membrane fouling ,saving production costs ,and guide the actual refining production process of Chinese herb extractions using membrane filtration technology.

Funds：

国家自然科学基金（30572374，30873449，30973950）；中药制药过程新技术国家重点实验室开放基金资助（SKL2010Z0101）

AuthorIntro：

刘红波(1987-),男，河南周口，硕士生在读，从事以膜技术为主体的中药复方分离工程研究。E-mail:1304532099@qq.com 参考文献

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