Study on surface modification of polyamide composite forward osmosis membrane by D-GlcN |
Authors: Fengbin Cheng, Jiale Wang, Lijun Ji, Xiaohua Ma |
Units: 1. School of Chemical and Engineering, East China University of Science and Technology, Shanghai 200237; 2. Key Laboratory of Cigarette Smoke of State Tobacco Monopoly Administration, Technical Center of Shanghai Tobacco Corporation, Shanghai 200082 |
KeyWords: forward osmosis; polyamide composite membrane; surface grafting modification; D-GlcN, membrane fouling |
ClassificationCode:TQ 028.8 |
year,volume(issue):pagination: 2022,42(3):15-22 |
Abstract: |
A thin-film composite forward osmosis (TFC FO) membrane was fabricated in this work by using PSf/SPSf membrane as the supporting structure and polyamide as the active layer. TFC FO was further modified by grafting glucosamine (D-GlcN) on the nascent polyamide active layer to improve its permeation flux and pollution resistance. The results of Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) indicate D-GlcN has been grafted onto polyamide layer successfully. The permeation flux of each membrane was tested, and the maximum flux of the modified membrane was increased by 22% compared with the original TFC membrane, reaching 31.1 L/(m2·h) in AL-DS mode, while the reverse salt flux was almost unchanged. The fouling resistance of the modified membrane was studied with sodium alginate solution and dodecyl trimethyl ammonium bromide. The results showed that the fouling resistance of modified film is better than pristine membrane. |
Funds: |
上海烟草集团开放研究基金项目 |
AuthorIntro: |
程枫斌(1998-),男,江西上饶人,硕士研究生,主要从事正渗透膜制备研究工作 |
Reference: |
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