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Optimizing an Anaerobic Hybrid Reactor Series for Effective High-Strength Fresh Leachate Treatment and Biogas Generation

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  • Sakulrat Sutthiprapa

    (The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
    Center of Excellence on Energy Technology and Environment (CEE), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10140, Thailand)

  • Sirintornthep Towprayoon

    (The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
    Center of Excellence on Energy Technology and Environment (CEE), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10140, Thailand)

  • Chart Chiemchaisri

    (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand)

  • Pawinee Chaiprasert

    (Biotechnology Program, School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi, Bangkok 10150, Thailand)

  • Komsilp Wangyao

    (The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
    Center of Excellence on Energy Technology and Environment (CEE), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10140, Thailand)

Abstract

Treating high-strength fresh leachate is challenging and of great interest due to the inherent variability in its physical and chemical characteristics. This research aims to enhance the efficiency of the anaerobic hybrid reactor (AHR) series in treating high-strength fresh leachate and achieving biogas generation from fresh leachate at ambient temperatures. The AHR series used consists of two serially connected reactors termed the first anaerobic hybrid reactor (AHR-1) and the secondary anaerobic hybrid reactor (AHR-2). AHR-1 treated high-concentration fresh leachate with an organic loading rate (OLR) between 5 and 20 kgCOD/m 3 ·d. AHR-2 treated the effluent from the first tank and removed organic matter from the system. The experiment was conducted for 210 days, showing that an OLR of 10 kgCOD/m 3 ·d resulted in the most suitable COD removal efficiency, ranging from 82 to 91%. The most suitable OLR for biogas production was 15 kgCOD/m 3 ·d. The AHR series proved to be an efficient system for treating high-strength fresh leachate and generating biogas, making it applicable to leachate treatment facilities at waste transfer stations and landfill sites. Treating leachate and utilizing it as a renewable energy source using the AHR series presents a practical and efficient waste management approach. High-strength leachate can be effectively treated with the AHR series; such methods may be integrated into industries treating leachates with high COD values.

Suggested Citation

  • Sakulrat Sutthiprapa & Sirintornthep Towprayoon & Chart Chiemchaisri & Pawinee Chaiprasert & Komsilp Wangyao, 2024. "Optimizing an Anaerobic Hybrid Reactor Series for Effective High-Strength Fresh Leachate Treatment and Biogas Generation," Sustainability, MDPI, vol. 16(7), pages 1-13, April.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:7:p:3076-:d:1371531
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    References listed on IDEAS

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    1. Aarthi Aishwarya Devendran & Brijesh Mainali & Dilip Khatiwada & Farzin Golzar & Krushna Mahapatra & Camila H. Toigo, 2023. "Optimization of Municipal Waste Streams in Achieving Urban Circularity in the City of Curitiba, Brazil," Sustainability, MDPI, vol. 15(4), pages 1-18, February.
    2. Mohammed Ali Musa & Syazwani Idrus & Che Man Hasfalina & Nik Norsyahariati Nik Daud, 2018. "Effect of Organic Loading Rate on Anaerobic Digestion Performance of Mesophilic (UASB) Reactor Using Cattle Slaughterhouse Wastewater as Substrate," IJERPH, MDPI, vol. 15(10), pages 1-19, October.
    3. Maria Cristina Collivignarelli & Alessandro Abbà & Francesca Maria Caccamo & Silvia Calatroni & Vincenzo Torretta & Ioannis A. Katsoyiannis & Marco Carnevale Miino & Elena Cristina Rada, 2021. "Applications of Up-Flow Anaerobic Sludge Blanket (UASB) and Characteristics of Its Microbial Community: A Review of Bibliometric Trend and Recent Findings," IJERPH, MDPI, vol. 18(19), pages 1-25, September.
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