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<p>The current climate change crisis has significantly impacted the world, particularly through issues related to water scarcity and access, highlighting the urgent need for effective mitigation strategies. To address these challenges, a hybrid Microbial Fuel Cell (MFC)–Microfiltration (MF) system was developed for simultaneous wastewater treatment and energy generation. In this study, sugar factory effluent was treated using pre-constructed dual-chamber MFCs and monitored over a ten-day period. Following MFC operation, the effluent underwent MF treatment. The study also investigated the use of <i>sargassum</i> biomass as a flocculant in MFCs, with systems labelled as sugar factory effluent loaded with fresh <i>sargassum</i> (SFE-FS) and sugar factory effluent loaded with dry <i>sargassum</i> (SFE-DS). Among the MFCs tested, the SFE cell produced the highest power output (22.46 mW m⁻<sup>2</sup>) with a peak open-circuit voltage (OCV) of 0.797&#xa0;V. Wastewater analysis revealed that chemical oxygen demand (COD) removal for the SFE cell was 66% after MFC pretreatment and reached 100% following subsequent MF treatment. Similar trends were observed in the SFE-DS and SFE-FS cells. Across the three MFC-MF hybrid systems, the overall trends in COD, total suspended solids (TSS), and total dissolved solids (TDS) removal, along with increased dissolved oxygen (DO) and conductivity, followed the order: SFE &gt; SFE-FS &gt; SFE-DS. Flux values in the MF stage also followed this trend, increasing by 121%, 85%, and 60% for the SFE, SFE-FS, and SFE-DS systems, respectively.</p>

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Fabricated microbial fuel cell – microfiltration hybrid system for bioenergy generation and wastewater treatment of sugar factory effluent

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Matthus J. Walter,
  • Srinivasa R. Popuri

摘要

The current climate change crisis has significantly impacted the world, particularly through issues related to water scarcity and access, highlighting the urgent need for effective mitigation strategies. To address these challenges, a hybrid Microbial Fuel Cell (MFC)–Microfiltration (MF) system was developed for simultaneous wastewater treatment and energy generation. In this study, sugar factory effluent was treated using pre-constructed dual-chamber MFCs and monitored over a ten-day period. Following MFC operation, the effluent underwent MF treatment. The study also investigated the use of sargassum biomass as a flocculant in MFCs, with systems labelled as sugar factory effluent loaded with fresh sargassum (SFE-FS) and sugar factory effluent loaded with dry sargassum (SFE-DS). Among the MFCs tested, the SFE cell produced the highest power output (22.46 mW m⁻2) with a peak open-circuit voltage (OCV) of 0.797 V. Wastewater analysis revealed that chemical oxygen demand (COD) removal for the SFE cell was 66% after MFC pretreatment and reached 100% following subsequent MF treatment. Similar trends were observed in the SFE-DS and SFE-FS cells. Across the three MFC-MF hybrid systems, the overall trends in COD, total suspended solids (TSS), and total dissolved solids (TDS) removal, along with increased dissolved oxygen (DO) and conductivity, followed the order: SFE > SFE-FS > SFE-DS. Flux values in the MF stage also followed this trend, increasing by 121%, 85%, and 60% for the SFE, SFE-FS, and SFE-DS systems, respectively.