Effect of solution environments on ceramic membrane microfiltration of model system of Chinese medicines

Objective: To investigate the effect of differents solution environments on the ceramic membrane microfiltration of model system of Chinese medicines.Method: Taking binary system of soybean protein-berberine as the research object,flux,transmittance of berberine and traping rate of protein as indexes,different solution environment on membrane process were investigated.Result: When the concentration of soybean protein was under 1 g·L-1,the membrane flux was minimum with the traping of berberine decreased slightly as the concentration increased.When pH was 4,the flux was maximum with the traping rate of protein was 99%,and the transmittance of berberine reached above 60%.Conclusion: The efficiency of membrane separation can be improved by optimizing the solution environment of water-extraction of chinese medicines.The efficiency of membrane separation is the best when adjust the pH to the isoelectric point of proteins for the proteins as the main pollutant in aqueous solution.