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Removal performance of bacterial endotoxin by Y2O3/SiO2 positively charged ceramic microporous membrane

Authors： DENG Cheng, ZHU Mengfu*, CHENG Xiuting, ZHAO Lei, ZHANG Xinqi, LIU Hongbin

Units： (Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161, China)

KeyWords： positively charged ceramic membrane; bacterial endotoxin; electrostatic absorption; pharmaceutical water

ClassificationCode：TQ174

year,volume(issue):pagination： 2018,38(2):92-97

Abstract：

The Y2O3/SiO2 charged ceramic microporous membrane was fabricated through dip-coating and calcining process. The SEM, EDS and XRD results demonstrate that the electropositive nano-Y2O3 coating was simultaneously synthesized and attached to the base membrane surface. The as-prepared charged ceramic membrane illustrated a highly positive potential, and its IEP was up to 8.3. As a result, the charged ceramic membrane could effectively remove bacterial endotoxin from water, and the maximum removal rate of bacterial endotoxin was 99.6%. Owing to the positively charged adsorption sites on the membrane surface, the removal mechanism of charged ceramic membrane to bacterial endotoxin is mainly electrostatic adsorption effect. Therefore, this study provides a feasible method for bacterial endotoxin removal in pharmaceutical water field.

Funds：

国家自然科学基金资助项目（51202292）

AuthorIntro：

第一作者简介：邓橙（1981－），男，四川广安人，博士，副研究员；从事膜分离水处理技术的研究；E-mail: dcnudt@163.com 通讯作者，E-mail: zmf323@163.com

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