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<p>In this study, a single-chamber microbial fuel cells (MFCs) was employed to address the challenges of low electron generation and organic pollutant treatment. It specifically targeting cresol as the organic pollutant and commercial sugar as the organic substrate. The system operated with an external resistance of 1000 ῼ, achieving a maximum voltage of 300 mV within 35 days of a 45-day operation period. The open circuit voltage reached 400 mV, and the peak power density was 6.03 mW/m² at 1000 ῼ, while other resistances ranges failed to provide stable electron generation. The maximum current density recorded was 42.10&#xa0;mA/m², with an internal resistance of 739.19 ῼ. Biofilm analysis revealed solidification and maturation, with the cresol system peaking at a capacitance value of 0.00009&#xa0;F/g on day 35. Electrochemical tests also indicated stable electron transfer on day 35. Cresol degradation efficiency improved from 0% to 93.04% over the study period. Biological analysis highlighted biofilm formation on the anode, crucial for oxidizing substrates and electron transfer. Phylogenetic analysis identified key bacterial strains, including <i>Bacillus</i> and related genera, contributing to the MFC’s performance. The study also discusses commercial sugar oxidation, electron transport, and recommendations for MFCs development.</p>

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Eco-friendly energy production and cresol degradation via substrate-powered microbial fuel cells

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Ghada Mohamed Aleid,
  • Amal D. Alshammari,
  • Mohamad Nasir Mohamad Ibrahim,
  • Sidra Shahnawaz,
  • Mohd Hazwan Hussin,
  • Asim Ali Yaqoob

摘要

In this study, a single-chamber microbial fuel cells (MFCs) was employed to address the challenges of low electron generation and organic pollutant treatment. It specifically targeting cresol as the organic pollutant and commercial sugar as the organic substrate. The system operated with an external resistance of 1000 ῼ, achieving a maximum voltage of 300 mV within 35 days of a 45-day operation period. The open circuit voltage reached 400 mV, and the peak power density was 6.03 mW/m² at 1000 ῼ, while other resistances ranges failed to provide stable electron generation. The maximum current density recorded was 42.10 mA/m², with an internal resistance of 739.19 ῼ. Biofilm analysis revealed solidification and maturation, with the cresol system peaking at a capacitance value of 0.00009 F/g on day 35. Electrochemical tests also indicated stable electron transfer on day 35. Cresol degradation efficiency improved from 0% to 93.04% over the study period. Biological analysis highlighted biofilm formation on the anode, crucial for oxidizing substrates and electron transfer. Phylogenetic analysis identified key bacterial strains, including Bacillus and related genera, contributing to the MFC’s performance. The study also discusses commercial sugar oxidation, electron transport, and recommendations for MFCs development.