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Preparation and properties of composite nanofiltration membrane for fine separation of aromatic components from tobacco

Authors： LIU Chunbo1,2, XU Ruisong2, JIANG Wei1, LI Yong1, SI Xiaoxi1, YANG Ji1, ZHU Ruizhi1, ZHANG Fengmei1, TANG Shiyun1, YANG Mingquan1, ZHANG Ran2, HOU Mengjie2, LI Lin2, WANG Tonghua2

Units： 1. Yunnan Key Laboratory of Tobacco Chemistry R&D China Tobacco Yunnan Industry Co., Ltd. ,Kunming 650231，China; 2. State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science, School of Chemical Engineering, Dalian University of Technology, Dalian 116024，China

KeyWords： poly(m-phenylene isophthalamide); nanofiltration membrane; interfacial polymerization; membrane based separation technology; separation and concentration of aroma components from tobacco extracts

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2024,44(6):115-121

Abstract：

PA/PMIA composite nanofiltration membranes were prepared for fine separation of aromatic components in tobacco extract, in which the polyamide (PA) layer was composited on the surface of poly(m-phenylene isophthalamide) (PMIA) ultrafiltration membranes through interfacial polymerization reaction. When the concentration of piperazine (PIP) in aqueous phase was 0.5 %, the concentration of trimesoyl chloride (TMC) in oil phase was 0.15%, and the interfacial reaction time was controlled at 30s, the performance of PA/PMIA composite nanofiltration membrane prepared was optimal. It exhibited a pure water flux of up to 63.8 L/(m2·h), a glucose rejection rate of 91.52%, and a cutoff molecular weight of 180. The PA/PMIA composite nanofiltration membranes were used to filter and separate tobacco extract, and the concentration of nicotine and alkaloid in the filtrate was greatly reduced, achieving the separation and concentration of aroma components in tobacco. Additionally, the application of a two-stage filtration process combining ultrafiltration and nanofiltration allowed for a more precise separation of tobacco extracts, resulting in a greater variety of aroma components and higher concentrations of alkaloids and nicotine.

Funds：

云南省“兴滇英才支持计划”产业创新人才项目和云南中烟科技项目（2021JC04）

AuthorIntro：

刘春波（1978-），男，内蒙古赤峰人，副研究员，博士，研究方向：纳米材料与膜材料.

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