MCM-48改性三醋酸纤维素正渗透膜的制备及性能表征

发布时间：2018-03-30 07:13

本文选题：正渗透膜　切入点：MCM-　出处：《水处理技术》2017年03期

【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。
[Abstract]:MCM-48 silica nanoparticles with three-dimensional pore structure were synthesized by template method. MCM-48 was dispersed into the casting solution containing cellulose triacetate. MCM-48\ CTA forward osmotic composite membrane was prepared by phase inversion method. The characterization data of the composite membrane showed that MCM-48 was successfully doped into CTA membrane, and with the increase of MCM-48 content, the hydrophilicity and porosity of the membrane increased. Compared with pure CTA membrane, the water flux of MCM-48\ CTA membrane was doubled to 14.2 L/(m~2 hu, and the reverse salt flux was 0.15 mol/(m~2 hu when pure water was used as raw material solution 1 mol/L NaCl. The results showed that MCM-48 nanoparticles could effectively optimize the separation performance of CTA orthosmotic membrane.
【作者单位】：中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室;
【基金】：国家自然科学基金项目(21276246)
【分类号】：TQ051.893

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