天津工业大学学报2018，Vol.37Issue(2)：31-36,6.DOI:10.3969/j.issn.1671-024x.2018.02.006
平板纳滤膜和极细中空纤维纳滤膜表面Zeta电位的测试
Zeta potential test of flat nanofiltration membrane and ultrafine hollow fiber membrane
摘要
Abstract
In order to study optimal conditions in Zeta potential measurement of flat nanofiltration membranes and Zeta po-tential test method of ultrafine hollow fiber nanofiltration membrane, Zeta potential measurement method of nanofiltration(NF)membrane surface including plate NF membrane and hollow fiber NF membrane were studied by SurPASS solid surface Zeta potential analyzer.According to the principle of streaming potential method,Zeta potential test for cellulose acetate(CA)hollow fiber NF membrane was also proposed. Experimental results showed that nanofiltration membrane samples need to be immersed in ultrapure water for more than 2 h before measurements;the best test pressure of plate NF membrane is 3 kPa,the best streaming channel is 100-110 μm and the best flow is 80-120 mL/min,the standard deviation of test results is less than 2 mV.The sample filing tightness of cellulose acetate hollow fiber nanofiltration membrane needs to be adjusted before test to control flow rate of 80-120 mL/min.Before the test,by adjusting the tightness of cellulose acetate hollow fiber nanofiltration membrane sample filling to control test flow rate of 80-120 mL/min,the standard deviation of test results is less than 1 mV.关键词
平板纳滤膜/极细中空纤维纳滤膜/Zeta电位/流动电位/电位测试Key words
plate NF membrane/ultrafine hollow fiber NF membrane/Zeta potential/streaming potential/potential test分类
轻工纺织引用本文复制引用
范云双,宋晓绪,曹占平,孙道宝,胡晓宇..平板纳滤膜和极细中空纤维纳滤膜表面Zeta电位的测试[J].天津工业大学学报,2018,37(2):31-36,6.基金项目
天津市海洋经济创新发展区域示范项目(CXSF2014-24) （CXSF2014-24）
天津市科技计划项目(16PTSYJC00110) （16PTSYJC00110）
