膜科学与技术

Y2O3/SiO2荷正电陶瓷微孔膜对水中细菌内毒素去除性能

作者：邓橙，朱孟府，程秀婷，赵蕾，张兴奇，刘红斌

单位：军事医学科学院卫生装备研究所，天津 300161

关键词：荷正电陶瓷膜；细菌内毒素；静电吸附；制药用水

出版年,卷(期):页码： 2018,38(2):92-97

摘要：

以硅藻土陶瓷微孔膜为基膜，采用浸渍-烧结工艺制备出Y2O3/SiO2荷电陶瓷微孔膜。SEM、EDS、XRD等表征分析表明，立方体晶型的纳米Y2O3作为荷电剂附着在陶瓷膜表面，使荷电陶瓷膜显示出较强的正电性，其等电点为8.3。基于静电吸附原理，荷电陶瓷膜能有效吸附去除水中细菌内毒素，去除率最高可达99.6%。荷电陶瓷微孔膜的研究为水中细菌内毒素的去除提供了一种可行的技术方法，有望应用于水中细菌内毒素的去除和分离。

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.

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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