磁性壳聚糖杂化纳滤膜的制备及脱盐性研究
Investigation of the preparation and desalination property of magnetic chitosan hybrid nanofiltration membranes
邓博 1郭诗琪 1吴永红 1黄鹤鸣 1张兵1
作者信息
- 1. 沈阳工业大学石油化工学院,辽宁 辽阳 111003
- 折叠
摘要
以聚丙烯腈为基膜材料、磁性壳聚糖(MCs)为掺杂剂,制备了纳滤膜.采用热重分析、红外光谱分别对膜的热稳定性及表面官能团进行了表征.考察了掺杂剂含量、进料浓度和跨膜压力等因素对纳滤膜的脱盐性影响.结果表明:随膜内MCs含量增大,膜的热稳定性提高,对Ca2+截留率先增后减.在进料浓度40 mg-L-1和跨膜压力0.10 MPa操作条件下,由质量分数为2％MCs原料所制备的纳滤膜对Ca2+截留率达100％.
Abstract
Nanofiltration membranes were prepared using polyacrylonitrile as membrane matrix and mag-netic chitosan(MCs)as dopant.The thermal stability and surface functional groups of the membranes were correspondingly characterized by thermogravimetric analysis and infrared spectroscopy.The effects of some factors including dopant content,feed concentration and trans-membrane pressure on the desalina-tion of the membranes were investigated.The results show that the thermal stability of the nanofiltration membrane increases,and the Ca2+rejection first increases then decreases,with the increasing of MCs content in membranes.The Ca2+rejection can reach to 100％for the as-prepared nanofiltration mem-branes with MCs content of 2％in raw materials under the conditions of feed concentration of 40 mg·L-1 and transmembrane pressure of 0.10 MPa.
关键词
纳滤膜/工业废水/Ca2+/磁性壳聚糖Key words
nanofiltration membrane/industrial wastewater/Ca2+/magnetic chitosan引用本文复制引用
出版年
2025
NETL
NSTL
万方数据