Document Type
Article
Publication Date
10-2021
Publication Title
Polymers
Volume
13
Abstract
Fouling not only deteriorates the membrane structure but also compromises the quality of the permeate and has deleterious consequences on the membrane operation. In the current study, a commercial thin film composite nanofiltration membrane (NF90) was modified by sequentially depositing oppositely charged polycation (poly(allylamine hydrochloride)) and polyanion (poly(acrylic acid)) polyelectrolytes using the layer-by-layer assembly method. The water contact angle was decreased by ~10° after the coating process, indicating increased hydrophilicity. The surface roughness of the prepared membranes decreased from 380 nm (M-0) to 306 nm (M-10) and 366 nm (M-20). M-10 membrane showed the highest permeate flux of 120 L m−2 h−1 with a salt rejection of >98% for MgSO4 and NaCl. The fabricated membranes M-20 and M-30 showed 15% improvement in fouling resistance and maintained the initial permeate flux longer than the pristine membrane.
DOI
0.3390/polym13213728
ISSN
2073-4360
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Umair Baig, Abdul Waheed, Hassan A. Salih, et al.. "Facile modification of NF membrane by multi-layer deposition of polyelectrolytes for enhanced fouling resistance" (2021). Chemical Engineering Faculty Publications. 19.
https://commons.und.edu/che-fac/19