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<p>A microbial fuel cell (MFC) is a sophisticated type of modern fuel cell technology. It operates on a concept somewhat different from that of traditional fuel cells. However, despite major advancements, this technique still has several serious drawbacks, including the instability of organic substrates. In this work, pineapple extract is used as a substrate to address the instability of natural substrates. The power density (PD) achieved was 2.95 mW/m<sup>2</sup> within 40&#xa0;days of operation, while the maximum naphthalene degradation achieved was 70%. Additionally, the electrochemical test showed that active exoelectrogens could effectively build biofilms. The dominant bacterial species identified in the study include&#xa0;<i>Pseudoglutamicibacter cumminsii,&#xa0;Arthrobacter silvisoli,&#xa0;Arthrobacter celericrescens,&#xa0;Rothia halotolerans,</i> and&#xa0;<i>Micrococcus luteus.</i> These species play significant roles in energy generation and organic pollutant degradation in MFC. A detailed explanation of the research's postulated mechanism—which focuses on the oxidation of the substrate—is also provided. Finally, the optimization of the parameters showed that pH 7 is the most appropriate for optimal implementation. Furthermore, certain future directions are included, and concluding thoughts are provided.</p>

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Microbial Fuel Cell-Based Degradation of Naphthalene from Wastewater: A Study on Electricity Generation Using Pineapple Extract

  • 期刊论文

  • 发表日期：

    2025年4月30日

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  • Anoud Saud Alshammari,
  • Ghada Mohamed Aleid,
  • Alamri Rahmah Dhahawi Ahmad,
  • Asma D. Alomari,
  • Eman Alhomaidi,
  • Mustapha Omenesa Idris,
  • Mohd Hazwan Hussin,
  • Mohamad Nasir Mohamad Ibrahim

摘要

A microbial fuel cell (MFC) is a sophisticated type of modern fuel cell technology. It operates on a concept somewhat different from that of traditional fuel cells. However, despite major advancements, this technique still has several serious drawbacks, including the instability of organic substrates. In this work, pineapple extract is used as a substrate to address the instability of natural substrates. The power density (PD) achieved was 2.95 mW/m2 within 40 days of operation, while the maximum naphthalene degradation achieved was 70%. Additionally, the electrochemical test showed that active exoelectrogens could effectively build biofilms. The dominant bacterial species identified in the study include Pseudoglutamicibacter cumminsii, Arthrobacter silvisoli, Arthrobacter celericrescens, Rothia halotolerans, and Micrococcus luteus. These species play significant roles in energy generation and organic pollutant degradation in MFC. A detailed explanation of the research's postulated mechanism—which focuses on the oxidation of the substrate—is also provided. Finally, the optimization of the parameters showed that pH 7 is the most appropriate for optimal implementation. Furthermore, certain future directions are included, and concluding thoughts are provided.