Enhanced antibacterial properties and suppressed biofilm growth on multi-walled carbon nanotube (MWCNT) blended polyethersulfone (PES) membranes

Madenli, Evrim Celik, Yanar, Numan and Choi, Heechul (2021) Enhanced antibacterial properties and suppressed biofilm growth on multi-walled carbon nanotube (MWCNT) blended polyethersulfone (PES) membranes. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 9 (2). p. 104755.

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Abstract

This study investigates the biofilm formation resistance of the multi-walled carbon nanotube (MWCNT) blended polyethersulfone (PES) membranes. The antimicrobial properties and biofilm formation resistance of these composite membranes were explored using Escherichia coli (E. coli) and Pseudomonas aeruginosa (P. aeruginosa) as model organisms. The results show that the dispersion of the MWCNTs in the membrane structure matters in determining the biofilm formation resistance of the composite membranes. Here, no colonies were observed on the composite membranes with 0.5 wt % of MWCNT content (C/P-0.5%) when the E. coli cells were deposited onto the membrane surface. Furthermore, when the membranes were incubated in P. aeruginosa suspensions, the C/P-0.5% membrane showed almost 87 % less biofilm formation at 24 h, with the biofilm formation resistance increasing to 92 % at 4 d, compared to the neat PES membrane. Finally, there was no MWCNT release during the water filtration of the composite membranes.

Item Type:	Article
Uncontrolled Keywords:	Antibacterial resistance, Biofilm formation resistance, MWCNT, Polyethersulfone, Composite membranes
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	22 Jan 2024 17:16
Last Modified:	23 Jan 2024 08:42
DOI:	10.1016/j.jece.2020.104755
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3177953