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Preparation and characterization of novel hollow fiber nanofiltration membrane

Authors： SHI Le, LIU Sihua, SHE Jingguo, YAN An, WANG Changmeng, WU Chunrui, LU Xiaolong

Units： State Key Laboratory of Separation Membranes and Membrane Process, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China

KeyWords： hollow fiber nanofiltration membrane, interfacial polymerization, homopiperazine, structure and properties, salt separation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(4):1-7

Abstract：

Designing the structure of the reactive monomer for interfacial polymerization and adjusting the parameters of interfacial polymerization are effective means to realize the regulation of the structure and performance of the nanofiltration membrane. Aiming at the requirement of efficient separation of Na2SO4/NaCl, a hollow fiber nanofiltration membrane which had high selectivity for Na2SO4/NaCl was prepared by interfacial polymerization using homopiperazine (HPIP) as the aqueous phase monomer and trimethyl chloride (TMC) as the organic phase monomer in this work. The separation performance of nanofiltration membrane can be effectively controlled by optimizing the concentration of HPIP and adjusting the structure of separation layer. The nanofiltration membrane has the best selectivity for Na2SO4/NaCl when the concentration of HPIP is 3g·L-1, the rejection for Na2SO4 and NaCl of which are 98.0% and 14.2%, respectively. The selectivity for Na2SO4/NaCl is 6.9, and the permeation flux is 39.7 L·m-2·h-1.

Funds：

国家自然科学基金面上项目（51978466）；国家自然科学基金重点项目（51638011）

AuthorIntro：

史乐（1996－），女，河北石家庄，硕士研究生，研究方向为复合纳滤膜研制；E-mail：shile2027@qq.com

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