Long-term effects of anti-biofouling proton exchange membrane using silver nanoparticles and polydopamine on the performance of microbial electrolysis cells

Sung Gwan Park, P. P. Rajesh, Moon Hyun Hwang, Kyoung Hoon Chu, Sunja Cho, Kyu Jung Chae

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Proton exchange membrane (PEM) fouling in microbial electrolysis cells (MECs) is a major drawback since it limits proton migration. To mitigate membrane fouling, the typical strategy was surface coating with silver nanoparticles (AgNP) as sterilizing agents, but adverse silver release and interference on proton transfer are intrinsic constraint. In this study, to ameliorate these disadvantages the PEM was coated with AgNP and polydopamin (PDA), individually and in combination or even in different coating order, to study synergetic effects of these modifications. Combined use of PDA and AgNP showed a significantly higher MEC performance than a single coating (H2 recovery after 6 month operation; PDA_Ag = 68.12%, PDA-only = 16.1%, Ag-only = 5.69% and pristine = 3.21%). In terms of coating order, when AgNPs were coated immediately after the PDA coating, AgNPs were more uniformly formed and less released, and proton transportability (t¯+ = 0.96) was not sacrificed, showing a biofouling reduction of 80.74% compared to pristine PEM.

Original languageEnglish
Pages (from-to)11345-11356
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number20
DOIs
Publication statusPublished - 2021 Mar 19

Keywords

  • Anti-biofouling
  • Biofilm
  • Microbial electrolysis cells
  • Polydopamine
  • Proton exchange membrane
  • Silver nanoparticle

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint

Dive into the research topics of 'Long-term effects of anti-biofouling proton exchange membrane using silver nanoparticles and polydopamine on the performance of microbial electrolysis cells'. Together they form a unique fingerprint.

Cite this