文献类型：期刊文献

英文题名：Preparation and characterization of tubular supported ceramic microfiltration membranes from fly ash

作者：Fang, Jing[1];Qin, Guotong[1];Wei, Wei[2];Zhao, Xinqing[3]

第一作者：Fang, Jing

通讯作者：Qin, GT[1]

机构：[1]Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China;[2]Beijing Union Univ, Coll Arts & Sci, Beijing 100083, Peoples R China;[3]Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

第一机构：Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China

通讯机构：[1]corresponding author), Beihang Univ, Sch Chem & Environm, 37 Xueyuan Rd, Beijing 100191, Peoples R China.

年份：2011

卷号：80

期号：3

起止页码：585-591

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20113214211039);Scopus(收录号：2-s2.0-79961032056);WOS:【SCI-EXPANDED(收录号:WOS:000294381800022)】；

基金：This work was supported by the Chinese National Science Foundation under contract No. 50478001.

语种：英文

外文关键词：Fly ash; Supported ceramic membrane; Slip-casting

摘要：Crack-free tubular supported ceramic microfiltration membranes have been prepared by a slip-casting method using refined fly ash as the raw material. The effects of slip concentration, casting time, and withdrawal speed on the pore size distribution, weight gain, and morphology structure of the sintered membranes have been investigated. Scanning electron microscopy images showed that optimization of the slip concentration could avoid crack formation in the coating. The weight gain of the sintered membrane increased linearly with the square root of the casting time. However, the effects of casting time and withdrawal rate on the pore size distribution of the sintered membrane proved to be insignificant. Furthermore, the pore size distribution of the sintered membrane became sharp upon applying a second coating. The average pore diameter and pure water permeability of the double-coated membrane were 0.77 mu m and 1.56 x 10(4) L m(-2) h(-1) bar(-1), respectively, with a transmembrane pressure of 0.1 MPa at room temperature. (C) 2011 Elsevier B.V. All rights reserved.