正渗透膜材料与驱动体系研究进展
作者:李刚1, 李雪梅2, 何涛2, 姜标2, 高从階1
单位: 1中国海洋大学化学化工学院,青岛66100;2中国科学院上海高等研究院,上海201203
关键词: 正渗透;浓差极化;驱动溶液;膜材料
出版年,卷(期):页码: 2012,32(2):104-106

摘要:
本文报道了课题组在正渗透膜材料及高效易回收驱动液方面的研究进展.在膜材料方面,我们研究了准双皮层的三醋酸纤维素正渗透膜,得到的膜性能优于商业化HTI正渗透膜.在驱动溶质方面,研究了以乙二胺四乙酸和树枝状聚合物以及具有响应性能的纳米材料为代表的大尺寸驱动体系, 验证了大分子驱动溶质可以有效降低内浓差极化. 研究结果表明膜与驱动液在正渗透研究中都非常重要.
The recent progress in the forward osmosis membrane and drawing agents is reported. A quasi double-skin CTA FO membrane was prepared which showed improved FO performance as compared to commercial HTI membrane. On the development of draw agents, we have investigated the bulky draw solutes. It appeared that bulky draw solutes, including ethylene diamine tetra-acetic acid (EDTA), dendrimers and stimuli-responsive nanoparticles, showed improved draw efficiency, which confirmed that bulky molecules can effectively reduce internal concentration polarization. The results indicated that both FO membrane and draw agent are important for the improvement in the FO processes.
李刚(1982-),男,扬州市人,博士,中国海洋大学,膜法水处理。*通讯联系人: mail: het@sari.ac.cn

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