Jump to main content
Jump to site search


Anti-biofilm AgNP-Polyaniline-Polysulfone Composite Membrane Activated by Low Intensity Direct/Alternating Current

Abstract

Biofouling is a serious problem on membrane bioreactor systems, which reduces membrane permeability, increases energy costs, and decreases the lifetime of membranes. This study developed and evaluated a conductive ultrafiltration membrane activated by electric current for biofilm control. The polysulfone-based membrane was incorporated with polyaniline (PANI) emeraldine salt and silver nanoparticles (AgNP) as the electrical conductivity enhancer and the antimicrobial agent, respectively. The conductive membrane was connected to power sources providing either direct current (DC) or alternating current (AC) at an intensity level of 60 µA. The results showed that the addition of AgNP and PANI increased the membrane surface hydrophilicity, and did not affect the permeability of the membranes. AgNP-incorporated membrane activated by electric current (DC and AC) effectively prevented bacterial colonization and limited the silver leaching under 0.1 mg/L after 24-hr tests. The AC and DC activation obtained superior performance in bacterial resistance and silver retaining, respectively. This study indicated that the electrically-activated AgNP-PANI-PSF membrane can be further developed for an alternative solution for membrane fouling control.

Back to tab navigation

Publication details

The article was received on 26 Apr 2018, accepted on 09 Jul 2018 and first published on 10 Jul 2018


Article type: Paper
DOI: 10.1039/C8EW00259B
Citation: Environ. Sci.: Water Res. Technol., 2018, Accepted Manuscript
  •   Request permissions

    Anti-biofilm AgNP-Polyaniline-Polysulfone Composite Membrane Activated by Low Intensity Direct/Alternating Current

    Y. Zhou, S. Maharubin, P. Tran, T. W. Reid and G. Z. Tan, Environ. Sci.: Water Res. Technol., 2018, Accepted Manuscript , DOI: 10.1039/C8EW00259B

Search articles by author

Spotlight

Advertisements