Laccase/chitosan/MXene/GO catalytic composite membrane for highly effective fouling resistance

Prativa Mahato, James Mcelhinney, Hebah Sami Rashed Jarusheh, Giovanni Palmisano, Linda Zou

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Membrane fouling poses significant challenges to membrane systems' efficiency. 2D materials MXene and GO were incorporated into a chitosan polymer matrix to fabricate composite membrane (CMG). Laccase enzyme was subsequently coated on the membrane to enhance its catalytic properties (LCMG). For comparison purpose, chitosan (CS), CMG, and LCMG membranes were characterized and their fouling resistant properties were evaluated. In an accelerated organic fouling test, LCMG membrane showed the least flux decline of only 5 % over 8 hour experiment and, after cleaning, achieved the highest flux recovery rate after of 92 ± 1.2 %, compared to a 36 % reduction in the CMG membrane. The quantitative flow cytometric analysis demonstrated an 83 % reduction in microbiological population growth on the LCMG membrane compared to the uncoated CMG. In addition, the LCMG membrane showed very low foulant protein adsorption in fluorescence emission spectrometric analysis. These significant antifouling results of LCMG were mostly due to the generation of •OH radicals resulted from synergistic effects of laccase and MXene, which was successfully confirmed by EPR analysis. The biocatalytic membrane surface of LCMG membrane demonstrated a remarkable antifouling performance and can be used as an effective strategy in reducing membrane fouling during water treatment.

Original languageBritish English
Article number118443
JournalDesalination
Volume599
DOIs
StatePublished - 15 Apr 2025

Keywords

  • Antifouling
  • Chitosan
  • Laccase-coated catalytic membrane
  • MXene and GO
  • Reactive oxygen species (ROS)

Fingerprint

Dive into the research topics of 'Laccase/chitosan/MXene/GO catalytic composite membrane for highly effective fouling resistance'. Together they form a unique fingerprint.

Cite this