Fabrication and performance of maltitol-based polyester composite nanofiltration membrane |
Authors: ZHANG Quanhe,LIU Dapeng,HONG Yaoliang |
Units: 1.School of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;2. Jiangsu Separation and Purification Materials and Technology Engineering Research Center, Suzhou 215009,China;3.Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material,Suzhou 215009,China |
KeyWords: loose nanofiltration membrane; interfacial polymerization; Maltitol; dye/salt |
ClassificationCode:TQ028.8 |
year,volume(issue):pagination: 2024,44(3):133-142 |
Abstract: |
Loose nanofiltration membranes with excellent dye/salt selective separation are expected to fulfill the urgent need for dye/salt mixture separation in textile wastewater treatment. In this study, Maltitol with abundant hydroxyl groups was used as a novel aqueous monomer, and Maltitol/TMC loose nanofiltration membrane with high dye/salt selectivity and high water permeance was fabricated by interfacial polymerization (IP) with trimesoyl chloride (TMC) on the surface of Polyethersulfone (PES) ultrafiltration membranes for the excellent separation of dye/salt mixed solutions.The performance of the membranes was optimized by adjusting the concentration of Maltitol, and the optimized membranes had water permeance of 800.1 L· m2·h/MPa, with dyes rejection to 99.3 %, 95.1 % and 97.2 % for Congo red (CR), Direct red 23 (DR 23) and Eriochrome black T (EBT), the rejection of Na2SO4 and NaCl were only 10.3 % and 4.4 %, respectively. The optimized membranes showed flux recovery ratio (FRR) of around 90 % for all three dyes, and good long-term stability for the mixed salt/dye solutions. The new maltitol-based nanofiltration membrane has excellent application prospects in textile wastewater treatment. |
Funds: |
国家自然科学基金(51908394) |
AuthorIntro: |
张全合(1999-),河南信阳人,硕士,主要从事污水处理与回用技术。 |
Reference: |
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