Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.seppur.2020.117702
Title: Employing a green cross-linking method to fabricate polybenzimidazole (PBI) hollow fiber membranes for organic solvent nanofiltration (OSN)
Authors: ZHAO BAIWANG 
SHI GUIMIN 
WANG KAIYU 
Juin-Yih Lai
CHUNG TAI-SHUNG,NEAL 
Keywords: Polybenzimidazole (PBI)
Hollow fiber membrane cross-linking
Solvent resistant nanofiltration (SRNF)
Hollow fiber module
backwash
Issue Date: 15-Jan-2021
Publisher: Elsevier
Citation: ZHAO BAIWANG, SHI GUIMIN, WANG KAIYU, Juin-Yih Lai, CHUNG TAI-SHUNG,NEAL (2021-01-15). Employing a green cross-linking method to fabricate polybenzimidazole (PBI) hollow fiber membranes for organic solvent nanofiltration (OSN). Separation and Purification Technology 255 : 117702. ScholarBank@NUS Repository. https://doi.org/10.1016/j.seppur.2020.117702
Rights: Attribution-NonCommercial 4.0 International
Abstract: A solvent resistant polybenzimidazole (PBI) hollow fiber membrane has been designed and fabricated by a dry-jet wet-spinning process and subsequently cross-linked with a K2S2O8 aqueous solution at 35 °C. This green cross-linking process not only dramatically improves the membrane stability in harsh solvents including N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF) and dimethylsulfoxide (DMSO), but also enhances the mechanical properties of the PBI hollow fibers. A cross-linking duration of 14 h is found to produce PBI hollow fibers with most balanced separation performance. The newly developed cross-linked PBI hollow fiber membrane shows a rejection of Rose Bengal (RB) more than 99% in acetone, exhibiting very good prospects for solvent resistant nanofiltration (SRNF) applications. To effectively mitigate hollow fibers from damage due to membrane swelling during organic filtration, it is recommended that the module configuration for SRNF has one end of hollow fibers free from the module housing. A simple backwash cleaning process has also been developed to restore the membrane performance of a fouled membrane.
Source Title: Separation and Purification Technology
URI: https://scholarbank.nus.edu.sg/handle/10635/185076
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2020.117702
Rights: Attribution-NonCommercial 4.0 International
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Employing a green cross-linking method to fabricate.pdf1.39 MBAdobe PDF

OPEN

Pre-printView/Download

SCOPUSTM   
Citations

1
checked on Apr 12, 2021

Page view(s)

55
checked on Apr 8, 2021

Download(s)

9
checked on Apr 8, 2021

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons