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<p>This study aimed to improve methyl tertiary butyl ether (MTBE) degradation and power production in microbial fuel cells (MFCs) by employing an iron nanoparticle-coated graphite carbon electrode (Fe-GCE), co-metabolites (sodium acetate (SAC) and glucose (GLS)), and surfactants (sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB)). Fe-GCE enhanced the roughness and hydrophilicity of the electrodes, thereby promoting their electrochemical activity. This study compared the use of polyvinyl alcohol/glutaraldehyde (PVA/GA) and Nafion 117 membranes and the impact of carbon sources and surfactants on the performance of MFCs. The optimal conditions achieved 97.9% MTBE removal (10&#xa0;mg/L) within 96&#xa0;h by employing SAC and SDS in Nafion 117-MFC with a voltage of 335 mV in synthetic wastewater. Fe-GCE exhibited minimal antibacterial action and iron leaching (&lt; 0.3&#xa0;mg/L in 30 days), suggesting its stability during wastewater treatment. Bacterial community profiling revealed that <i>Bacillus</i>, <i>Alcaligenes</i>, <i>Trichococcus</i>, and <i>Magnetospirillum</i> were the main MTBE degraders. Statistical analysis validated substantial improvement in MTBE removal and voltage yield with the use of additives, and that PVA/GA-MFC had performance similar to Nafion 117-MFC, providing a cost-effective alternative with potential commercial success. This study provides insights into the potential use of MFCs for treating recalcitrant pollutants while producing green energy, paving the way for eco-friendly waste management strategies.</p>

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Enhanced methyl tertiary butyl ether degradation and electricity generation in microbial fuel cells using a modified anode and additives

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Marziyeh Ansari Shiri,
  • Maryam Faraji,
  • Majid Hashemi,
  • Davood Kalantar-Neyestanaki,
  • Hoda Amiri,
  • Majid Nozari

摘要

This study aimed to improve methyl tertiary butyl ether (MTBE) degradation and power production in microbial fuel cells (MFCs) by employing an iron nanoparticle-coated graphite carbon electrode (Fe-GCE), co-metabolites (sodium acetate (SAC) and glucose (GLS)), and surfactants (sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB)). Fe-GCE enhanced the roughness and hydrophilicity of the electrodes, thereby promoting their electrochemical activity. This study compared the use of polyvinyl alcohol/glutaraldehyde (PVA/GA) and Nafion 117 membranes and the impact of carbon sources and surfactants on the performance of MFCs. The optimal conditions achieved 97.9% MTBE removal (10 mg/L) within 96 h by employing SAC and SDS in Nafion 117-MFC with a voltage of 335 mV in synthetic wastewater. Fe-GCE exhibited minimal antibacterial action and iron leaching (< 0.3 mg/L in 30 days), suggesting its stability during wastewater treatment. Bacterial community profiling revealed that Bacillus, Alcaligenes, Trichococcus, and Magnetospirillum were the main MTBE degraders. Statistical analysis validated substantial improvement in MTBE removal and voltage yield with the use of additives, and that PVA/GA-MFC had performance similar to Nafion 117-MFC, providing a cost-effective alternative with potential commercial success. This study provides insights into the potential use of MFCs for treating recalcitrant pollutants while producing green energy, paving the way for eco-friendly waste management strategies.