文献类型：期刊文献

英文题名：Mutual-assisted structure of sodium alginate-polyamide membrane for high-efficient dehydration of ethanol

作者：Cheng, Feng-Yi[1];Zhang, Xin[1];Lin, Yu-Fei[1];Wu, Liu-Kun[1];Xu, Zhen-Liang[1];Taymazov, Dovletjan[1]

机构：[1]East China Univ Sci & Technol ECUST, State Key Lab Chem Engn, Chem Engn Res Ctr, Sch Chem Engn,Membrane Sci & Engn R&D Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：140

外文期刊名：JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS

收录：;EI(收录号：20224313005808);WOS:【SCI-EXPANDED(收录号:WOS:000877005200002)】；

基金：The authors gratefully acknowledge for the financial support received from the National Natural Science Foundation of China (22078092 and 22078088) , State Key R & D Program of China (2021YFB3801103 and 2021YFB3801101) .

语种：英文

外文关键词：Sodium alginate; Pervaporation; Interfacial polymerization; Composite membrane; Ethanol dehydration

摘要：Background: Pervaporation (PV), an environment-friendly and low-cost energy technology, possesses outstanding advantages for the dehydration from organic solution. The structure of the functional selective layer occupies an indispensable role to enhance membrane separation performance. Methods: Here, the sodium alginate (SA) with a polymer network was employed as a scaffold of ethylenediamine (EDA) to successfully prepare a thin-film composite (TFC) PV membrane through the interfacial polymerization (IP) method with trimesoyl chloride (TMC) on a ceramic hollow fiber support. Significant findings: Scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FTIR) and X-ray photoelectron spectrometer (XPS) confirmed the addition of SA in the TFC membrane matrix, and the enhanced interaction between SA and polyamide (PA). Increasing SA concentration influenced the viscosity of solution, which resulted in a thicker functional layer, a lower membrane flux and a better separation perfor-mance. PV experiments were conducted and the prepared TFC membrane exhibited good dehydration perfor-mance with a total flux of 1.49 kg/m2h and a separation factor of 297 for separating 85 wt% ethanol-water mixture at 60 degrees C. The incorporation of SA as a scaffold in the membrane matrix provides a novel means to tailor the functional selective layer for enhancing membrane separation performance.