摘要
采用模板剂法合成了具有三维孔道结构的MCM-48二氧化硅纳米球形颗粒。将MCM-48分散到含三醋酸纤维素(CTA)的铸膜液中,通过相转化法制备了MCM-48\CTA正渗透复合膜。复合膜的表征数据表明,MCM-48成功的掺杂到CTA膜中,而且随着MCM-48含量的增加,膜的亲水性增强,孔隙率增大。正渗透实验结果表明,以纯水为原料液,1 mol/L NaCl为汲取液时,与纯CTA膜相比,MCM-48\CTA膜水通量增加一倍,达到了14.2 L/(m^2·h),反向盐通量为0.15 mol/(m^2·h)。表明,MCM-48纳米颗粒可以有效的优化CTA正渗透膜的分离性能。
MCM-48 silica spherical nanoparticles with a three-dimensional pore structure were synthesized by the template agent. The cellulose triacetate （CTA）-based forward osmosis （FO） composite membranes modified with MCM-48 （MCM-48/CTA） were prepared via phase inversion method with dispersing MCM-48 in the casting solution containing CTA. The results exhibited that MCM-48 doped into the CTA membrane successfully. The hydrophilieity and porosity of the MCM-48/CTA composite membranes were improved with the increase of the MCM-48 content. The water flux of MCM-48/CTA membrane （containing 0.15wt% MCM-48） reached to 14.2 L/（m2.h） when the feed and draw solutions were pure water and 1 mol/L NaCI solution respectively. This results is over 2 times higher than water flux of neat CTA FO membrane. The performance results indicated that MCM-48 nanoparticles could effectively optimize separation performance of CTA forward osmosis membrane.
作者
张大鹏
姜蕾
刘兆峰
朱桂茹
高从堦
ZHANG Dapeng JIANG Lei LIU Zhaofeng ZHU Guiru GAO Congiie(School of Chemistry and Chemical Engineering, Ocean University of China, Key Laboratory of Marine Chemistry Theory and Technology, Qingdao 266100, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第3期25-28,33,共5页
Technology of Water Treatment
基金
国家自然科学基金项目(21276246)
