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Advancing Energy Recovery from Sugarcane Leaf via Two-Stage Anaerobic Digestion for Hydrogen and Methane Production: Impacts on Greenhouse Gas Mitigation and Sustainable Energy Production

Author

Listed:
  • Prawat Sukphun

    (Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Chaweewan Ponuansri

    (Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Worapong Wongarmat

    (Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Sureewan Sittijunda

    (Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand)

  • Kanathip Promnuan

    (Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Alissara Reungsang

    (Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
    Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand
    Academy of Science, Royal Society of Thailand, Bangkok 10400, Thailand)

Abstract

This study aims to enhance energy recovery from sugarcane leaf (SCL) through two-stage anaerobic digestion (TSAD) for hydrogen and methane production. The influence of hydraulic retention time (HRT) on this process was investigated. Optimal conditions established through batch experiments (5% total solids (TS) ( w / v ) and rice straw compost inoculum) were applied in semi-continuous stirred tank reactors (CSTR-H 2 and CSTR-CH 4 ). Remarkably, the highest production rates were achieved with HRTs of 5 days for CSTR-H 2 (60.1 mL-H 2 /L·d) and 25 days for CSTR-CH 4 (238.6 mL-CH 4 /L·d). Microbiological analysis by 16s rRNA sequencing identified Bacillus as predominant in CSTR-H 2 followed by Lactobacillus and Clostridium. Utilizing SCL for TSAD could reduce greenhouse gas (GHG) emissions by 2.88 Mt-CO 2 eq/year, compared to open-field burning, and mitigate emissions from fossil-fuel-based power plants by 228 kt-CO 2 eq/year. This research underscores the potential of TSAD for efficient energy recovery and significant GHG emission reductions.

Suggested Citation

  • Prawat Sukphun & Chaweewan Ponuansri & Worapong Wongarmat & Sureewan Sittijunda & Kanathip Promnuan & Alissara Reungsang, 2023. "Advancing Energy Recovery from Sugarcane Leaf via Two-Stage Anaerobic Digestion for Hydrogen and Methane Production: Impacts on Greenhouse Gas Mitigation and Sustainable Energy Production," Energies, MDPI, vol. 16(23), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:23:p:7861-:d:1291722
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    References listed on IDEAS

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    1. Thapat Silalertruksa & Chanipa Wirodcharuskul & Shabbir H. Gheewala, 2022. "Environmental Sustainability of Waste Circulation Models for Sugarcane Biorefinery System in Thailand," Energies, MDPI, vol. 15(24), pages 1-21, December.
    2. Margareta, Winny & Nagarajan, Dillirani & Chang, Jo-Shu & Lee, Duu-Jong, 2020. "Dark fermentative hydrogen production using macroalgae (Ulva sp.) as the renewable feedstock," Applied Energy, Elsevier, vol. 262(C).
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