染料脱盐纳滤膜分离性能表征  

Separation Performance Characterization of The NF Membrane With Dye Desalination

作　　者：张浩勤[1] 秦国胜 张秋楠 穆文瑞 武文佳[1] 陈普 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]郑州鸿盛数码科技股份有限公司,河南郑州450001

出　　处：《郑州大学学报（工学版）》2015年第3期73-76,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(U1407121);河南省产学研科研项目(132107000031);郑州市科技创新团队计划项目(131PCXTD596)

摘　　要：数码喷墨印花用染料目前主要依赖进口,将国产商品染料提纯用于数码喷墨印花有重要的意义.以中试规模装置对本研究所制备的染料脱盐纳滤膜分离性能进行表征,实验结果表明,对于染料活性红与Na Cl混合溶液,膜对活性红截留率高于99.5%,膜对Na Cl呈现出负截留现象,该膜的渗透通量高于35 L·m-2·h-1·MPa-1;随着操作压差增大,膜的渗透通量增大,但选择性略有降低.上述结果表明,在纳滤膜中同时引入正、负两种固定电荷可以提高有机物的脱盐效率.The purification of domestically commercial dye for digital inkjet printing has an important significance since it mainly relies on the import at present. The separation performance of the NF membrane with dye desalination prepared by our research laboratory was evaluated in pilot scale. For the mixed solution of reactive red/NaCL/water, the rejection of reactive red by the membrane was higher than 99.5% , meanwhile the rejection of NaC1 by the membrane was negative, and also the permeation flux is higher than 35 L · m-2 . h-1 ·MPa- 1 The permeation flux of membrane increased with the operating differential pressure, but the selectivity of membrane decreased slightly. The results show that the desahing efficiency of organics can be improved by simultaneously introducing positive and negative charge in membrane.

关 键 词：数码喷墨印花 染料脱盐 纳滤 

分 类 号：TQ028.8[化学工程]