基于乙二胺四乙酸的正渗透驱动液的研究  

Draw agent in forward osmosis based on EDTA

作　　者：马宇春[1] 刘安康[1] 陈登星[1] 李刚[1] 何涛[1,2] 李雪梅[2] 

机构地区：[1]南京工业大学化学化工学院材料化学工程国家重点实验室,江苏南京210009 [2]中国科学院上海高等研究院膜材料与分离技术实验室,上海201203

出　　处：《南京工业大学学报（自然科学版）》2012年第3期79-83,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重大基础研究计划(973计划)资助项目(2009CB23402;2012CB720903);国家自然科学基金资助项目(20976083);科技部中以战略合作资助项目(201001)

摘　　要：以研究高驱动通量的驱动体系为目标,考察具有一定的空间结构且体积较大的有机盐类分子作为正渗透驱动液的可能性。以乙二胺四乙酸(EDTA)二钠盐为溶质,评价了其正渗透驱动通量和截留效率。结果表明,以商业反渗透膜为评价介质,0.5 mol/L EDTA为驱动液,水通量为13.6 L/(m2.h),驱动效率高于NaCl。Forward osmosis（FO） was a natural process without the input of external energy.It was a potential technique for the development of new technology for seawater desalination,power generation by pressure-retarded osmosis and most importantly as osmotic engine for controlled release.For the development of highly effective draw system,the use of ethylendiaminetetraacetic acid（EDTA） as draw solute was investigated and its performance in FO process using reverse osmosis membrane was evaluated.A flux of 13.6 L/（m2·h） was found on a draw concentration of 0.5 mol/L.Results showed that EDTA had a higher draw efficiency than NaCl.

关 键 词：乙二胺四乙酸(EDTA) 正渗透 驱动液 

分 类 号：TQ050.425[化学工程]