Fouling and its cleaning of 0.2 ?m Al_2O_3 ceramic membrane in themicrofiltation of extract of Qijudihuang Pills
- VernacularTitle:0.2?m Al_2O_3陶瓷膜微滤杞菊地黄丸水提液的污染机理及清洗研究
- Author:
Ying LIN
;
Wenling FAN
;
Liwei GUO
- Publication Type:Journal Article
- Keywords:
ceramic membrane;
Chinese drug;
aqueous extract;
fouling of membrane;
cleaning of membrane
- From:
Chinese Traditional Patent Medicine
1992;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To discuss the fouling mechanism of 0.2 ?m Al_2O_3 ceramic membrane in the microfiltation of extraction of Qijudihuang Pills, and obtain the effective cleaning procotrol. METHODS: The extract of Qijudihuang Pills microfiltered and the distributions of filtration resistance were studied according to the Darcy-Poiseuille principle. The characteristic of the surface and section of the polluted membrane were analysed by SEM also. RESULTS: ① For the main body, the filtration resistance was mainly decided by the deposit resistance, the membrane itself and the concentration polarization resistance were less important, and the pore blocking resistance was minimum. Moreover, this result was proved by the analysis of SEM. ② The effective four-step cleaning procotrol, which could almost recover original membrane flux, was achieved by three cleaner, including ultrasound, NaOH solution and HCl solution. CONCLUSION: Based on the different fouling mechanism,the appropriate cleaning procotrol can be obtained. This provides great significance for the application of the industrialized manufacture.
