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Experimental study on separation performance of nanofiltration membrane under neutral solution

Authors： YANG Hong1, ZNANG Huiqin2, LE Yun1, HUANG Biao1, YE Chunsong3

Units： 1. CSIC Environmental Engineering Co. Ltd, Wuhan 430064, China; 2. Hubei university of technology, Wuhan 430068, China; 3. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

KeyWords： neutral solute; nanofiltration membrane; separation performance; activation energy; reflection coefficient

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2018,38(6):41-47

Abstract：

In this paper, the basic parameters of NF270 and GE DK nanofiltration membrane were tested with glycerol, glucose and sucrose solution respectively in different conditions. The reflection coefficient and solute permeability coefficient of nanofiltration membrane were obtained by data regression of S-K model using Matlab. The pore size of the membrane and the ratio of porosity to thickness of the membrane were obtained using SHP model, meanwhile the thermodynamic parameters of three neutral solute during the nanofiltration were also studied. The results showed that the deviation between the test data and S-K model simulation data are between 0 % and 2.0 %,which indicated the consistency of test data with S-K model. The pore size of NF270 membrane is 0.54 nm to 0.61 nm, and that of GE DK membrane is 0.51 nm to 0.58 nm. The activation energies during the separation of glycerol, glucose and sucrose solution by NF270 membrane were 14.24 KJ/mol, 31.86 KJ/mol and 78.41 KJ/mol respectively, and the activation energies during the separation of glucose and sucrose solution by GE DK membrane were 45.83 KJ/mol and 46.09 KJ/mol respectively.

Funds：

科技部、财政部国家中小企业创新基金

AuthorIntro：

第一作者：阳红（1980.08），男，安徽，高级工程师，研究生，博士，水污染治理，E-mail：yanghong813@126.com 通讯作者：叶春松，E-mail：yechunsong@126.com

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