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Chemical Cleaning of TiO2 modified Al2O3 Ceramic MF Membranes fouled by Oil/water Emulsion

Authors： ZHANG Jing1, 2, ZHANG Xiaozhen1*, Chang Qibing1, ZHOU Jianer1, WANG Yongqing1,
HAN Runlin1 , JIANG Yuhua1

Units： 1 Key Laboratory of Jiangxi Universities for Inorganic Membranes, School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001; 2 School of New energy science and engineering, Nanchang Institute of Technology, Nanchang, 330013

KeyWords： modified ceramic microfiltration membrane；nano titania；oil/water emulsion；membrane fouling；alkaline composite cleaning agent

ClassificationCode：TQ174.75

year,volume(issue):pagination： 2014,34(5):53-57

Abstract：

The feasibility for the chemical cleaning of nano TiO2 modified Al2O3 ceramic MF membranes fouled by oil/water emulsion was investigated in details, using the developed alkaline composite cleaning agent and through once cleaning process. The measurements of recovery ratios of permeate flux, oil rejection rate, scanning electron microscope (SEM) and fourier transform infrared spectroscopy (FTIR) analyses were conducted to characterize the cleaning effect of developed cleaning agents and the influence of chemical cleaning process on the modification effects of nano TiO2. Results shows that the prepared alkaline composite cleaning agent exhibit excellent cleaning effect and could remove the membrane foulants effectively. The chemical cleaning process does not affect the modification effects of nano TiO2 on Al2O3 ceramic membrane. The industrial application cleaning tests were also conducted for modified Al2O3 membranes fouled by cold rolling emulsified oily wastewater from a steel mill. After cleaning, the permeate flux recovery ratios of pure water and oily water could reach 96.9% and 98.1%, respectively.

Funds：

国家国际科技合作专项（2009DFB50490)；江西省自然科学基金(2010GZC0101 )

AuthorIntro：

章婧(1989-)，女，硕士研究生，主要从事陶瓷膜的应用研究，E-mail：i.am.simple@qq.com。*通讯作者，E-mail：zhangxz05@126.com

Reference：

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