葡萄糖、蔗糖、果糖作正渗透汲取液溶质的对比实验研究  

COMPARATIVE STUDY OF GLUCOSE, SUCROSE AND FRUCTOSE AS DRAW SOLUTES IN FORWARD OSMOSIS

作　　者：刘帅[1] 谢朝新[1,2] 周宁玉[1,2] 王毅[1] 陈璐斌 

机构地区：[1]后勤工程学院国防建筑规划与环境工程系 [2]重庆市水工业与环境工程技术研究中心,重庆401311

出　　处：《水处理技术》2015年第5期42-45,49,共5页Technology of Water Treatment

基　　金：重庆市重大科技公关项目资助(cstc2012gg-sfgc00002);2013年重庆高校创新团队建设计划资助项目(KJTD201340)

摘　　要：采用1种新型的聚酰胺(PA)正渗透膜,分别研究了葡萄糖、蔗糖、果糖作正渗透汲取液溶质时,不同汲取液(DS)含量、不同膜朝向下的水通量变化规律。结果表明,当膜的活性层朝向汲取液模式(AL-DS模式)时,随着DS含量的增大,3种糖对应水通量均增大,但水通量的增加量均随含量的提高而减小,蔗糖对应水通量的增加量高于葡萄糖和果糖;当膜的活性层朝向原料液(FS)模式(AL-FS模式)时,水通量远小于AL-DS模式下的水通量,随着DS含量的增大,3种糖对应水通量都几乎不变,增至高含量时,水通量反而略有下降;在2种模式下,DS含量相同时,果糖对应的水通量最大,葡萄糖次之,蔗糖最小。Glucose, sucrose and ti＇uctose were used as draw solutes in forward osmosis, and the water flux changes of the three kinds of sugar under different concentrations and different membrane orientations was investigated. A new type of polyamide （PA） membrane was used as the evaluation medium. It was found that when the membrane orientation was Active Layer-facing-Draw Solution （AL-DS）, the water flux of all kinds of sugar increased with the increase of the draw solutions concents, but the increment of water flux decreased while water flux increment of sucrose was higher than glucose and fructose. When the membrane orientation was Active Layer-facing-Feed Solution （AL-FS）, water flux was far less than that in the AL-DS mode, and the water flux of all kinds of sugar were almost the same with the increase of the draw solution＇s content. When the content increased into the highest, the water flux slightly decreased instead. In both of membrane orientations, when the content of draw solution is identical, the water flux of fructose was the highest, glucose ranked the second place, and sucrose was the lowest.

关 键 词：正渗透 葡萄糖 蔗糖 果糖 含量 膜朝向 水通量 

分 类 号：TQ028.8[化学工程]