Microfiltration Process by Inorganic Membranes for Clarification of TongBi Liquor

Molecules

Bo Li¹  Minyan Huang¹  Tingming Fu¹  Linmei Pan¹  Weiwei Yao¹ 

[1] ¹Key Laboratory of Chinese Traditional Medicine Compound Separation Engineering, Nanjing University of Chinese Medicine, Nanjing 210029, China ²The First People’s Hospital of Nantong, Nantong 226001, China

关键词: Tongbi liquor;    microfiltration;    ceramic membrane;    liquor quality;    ultrasonic field;    Chinese Herbal Medicine;   

DOI  :  10.3390/molecules17021319

来源: mdpi

【 摘 要 】

Membrane separation is an alternative separation technology to the conventional method of filtration. Hence, it has attracted use in the purification and concentration of Chinese Herbal Medicine Extracts (CHMEs). The purpose of this work was to study the process of microfiltration of Tongbi liquor (TBL), a popular Chinese herbal drink, using ceramic membranes. Zirconium oxide and aluminum oxide membranes with pore mean sizes of 0.2 μm and 0.05 μm, respectively, are used for comparisons in terms of flux, transmittance of the ingredients, physical-chemical parameters, removal of macromolecular materials and fouling resistance. The results show that 0.2 μm zirconium oxide membrane is more suitable. The stable permeate flux reaches 135 L·h⁻¹·m⁻², the cumulative transmittance of the indicator is 65.53%. Macromolecular materials, such as starch, protein, tannin, pectin and total solids were largely eliminated in retentate after filtration using 0.2 μm ZrO₂ ceramic membrane, resulting in clearer TBL. Moreover, this work also reveals that continuous ultrasound could strengthen membrane process that the permeate flux increases significantly. This work demonstrates that the purification of CHME with ceramic membranes is possible and yielded excellent results.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.