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Biogas Potential of Food Waste-Recycling Wastewater after Oil–Water Separation

Author

Listed:
  • Gyuseong Han

    (Eco-Technology Research Team, Technology Research Center, Hyundai Engineering & Construction, 75 Yulgok-ro, Jongno-gu, Seoul 03058, Republic of Korea
    These authors contributed equally to this work.)

  • Juhee Shin

    (Future Convergence Technology Research Institute, Gyeongsang National University, 501 Jinjudae-ro, Jinju 52828, Republic of Korea
    These authors contributed equally to this work.)

  • Myoung-Eun Lee

    (Future Convergence Technology Research Institute, Gyeongsang National University, 501 Jinjudae-ro, Jinju 52828, Republic of Korea)

  • Seung Gu Shin

    (Future Convergence Technology Research Institute, Gyeongsang National University, 501 Jinjudae-ro, Jinju 52828, Republic of Korea
    Department of Energy Engineering, Gyeongsang National University, 501 Jinjudae-ro, Jinju 52828, Republic of Korea)

Abstract

This study explores the potential of food waste-recycling wastewater (FRW) for biogas production, emphasizing oil–water separation before anaerobic digestion. Three FRW samples were analyzed: non-treated (FRW), water–oil separated (FRW_sep), and mixed with domestic sewage (FRW_mix). Physicochemical characterization showed a 26% reduction in crude lipid content after oil–water separation. The biochemical methane potential (BMP) tests revealed similar methane yields for FRW_sep and FRW_mix compared to non-treated FRW. Microbial analysis identified Firmicutes and Methanoculleus as active populations. Energy balance suggests that combining biodiesel and biogas production can enhance net energy recovery. This research indicates that oil–water separation in FRW treatment can optimize anaerobic digestion, contributing to sustainable waste management and renewable energy generation.

Suggested Citation

  • Gyuseong Han & Juhee Shin & Myoung-Eun Lee & Seung Gu Shin, 2024. "Biogas Potential of Food Waste-Recycling Wastewater after Oil–Water Separation," Energies, MDPI, vol. 17(17), pages 1-10, September.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:17:p:4428-:d:1470857
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    References listed on IDEAS

    as
    1. Krystyna Lelicińska-Serafin & Piotr Manczarski & Anna Rolewicz-Kalińska, 2023. "An Insight into Post-Consumer Food Waste Characteristics as the Key to an Organic Recycling Method Selection in a Circular Economy," Energies, MDPI, vol. 16(4), pages 1-13, February.
    2. Rhee, Chaeyoung & Park, Sung-Gwan & Yu, Sung Il & Dalantai, Tergel & Shin, Juhee & Chae, Kyu-Jung & Shin, Seung Gu, 2023. "Mapping microbial dynamics in anaerobic digestion system linked with organic composition of substrates: Protein and lipid," Energy, Elsevier, vol. 275(C).
    Full references (including those not matched with items on IDEAS)

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