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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 现任大连理工大学化工学院教授、博士生导师。同时担任“膜科学与技术”期刊编委，膜学会理事（筹），膜工业协会工程与应用专业委员会及特种分离膜专业委员会委员、中国兵工学会活性炭测试分析与应用研究分会委员等。
性别：男
毕业院校：大连工学院
学位：硕士
所在单位：化工学院
学科：化学工艺. 膜科学与技术. 功能材料化学与化工
办公地点：化工综合楼A201
联系方式：微信/电话 13500711370
电子邮箱：wangth@dlut.edu.cn
Modification of the desalination property of PAN-based nanofiltration membranes by a preoxidation method
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论文类型：期刊论文
发表时间：2015-02-02
发表刊物：DESALINATION
收录刊物：SCIE、EI
卷号：357
页面范围：208-214
ISSN号：0011-9164
关键字：Preoxidation; Nanofiltration; Polyacrinolitrile; Calcium chloride; Stabilization
摘要：Nanofiltration membranes were prepared from polyacrylonitrile (PAN). The microstructure and desalination property of the as-prepared PAN nanofiltration membranes were tuned by a preoxidation method. The thermal stability of PAN membranes is significantly enhanced after preoxidation due to the crosslinking structure formation in the membrane matrix. The crosslinking degree for PAN membranes is improved by preoxidation at high temperatures or low air flowrates. For modified membranes a change in rejection was observed as a function of feed pH. Nanofiltration results have shown that the optimum rejection of 99.98% was achieved for CaCl2 when the PAN membranes were preoxidized at 220 degrees C with an air flowrate of 416 mL/min, under the feed concentration of 50 mg/L and pH value of 3. (C) 2014 Elsevier B.V. All rights reserved.