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Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste

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  • Guven, Huseyin
  • Ersahin, Mustafa Evren
  • Dereli, Recep Kaan
  • Ozgun, Hale
  • Isik, Isa
  • Ozturk, Izzet

Abstract

Excess sludge from a pilot-scale high-rate activated sludge (HRAS) system was digested anaerobically under mesophilic conditions. The pilot-scale HRAS system was initially fed with only wastewater and following that, fed with wastewater together with food waste. Impact of food waste inclusion on anaerobic digestion performance was investigated. Thereafter, a feasibility study was carried out using the performance data obtained from the experimental studies. The results showed that digestion of HRAS sludge could be a preferable option unless excellent biomass-liquid separation could be employed and mineralization of influent chemical oxygen demand (COD) could be suppressed. Additionally, co-treatment of wastewater and food waste increased the methane yield and improved the energy balance of the wastewater treatment plants (WWTPs). Thus, WWTPs can have a surplus in the energy budget.

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  • Guven, Huseyin & Ersahin, Mustafa Evren & Dereli, Recep Kaan & Ozgun, Hale & Isik, Isa & Ozturk, Izzet, 2019. "Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste," Energy, Elsevier, vol. 172(C), pages 1027-1036.
    • Handle: RePEc:eee:energy:v:172:y:2019:i:c:p:1027-1036
    DOI: 10.1016/j.energy.2019.01.150
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    Cited by:

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    2. Shi, Yi & Xu, Jiuping, 2023. "A multi-objective approach to kitchen waste and excess sludge co-digestion for biomethane production with anaerobic digestion," Energy, Elsevier, vol. 262(PA).
    3. Abusoglu, Aysegul & Tozlu, Alperen & Anvari-Moghaddam, Amjad, 2021. "District heating and electricity production based on biogas produced from municipal WWTPs in Turkey: A comprehensive case study," Energy, Elsevier, vol. 223(C).
    4. Julia Burmistrova & Marc Beutel & Erin Hestir & Rebecca Ryals & Pramod Pandey, 2022. "Anaerobic Co-Digestion to Enhance Waste Management Sustainability at Yosemite National Park," Sustainability, MDPI, vol. 14(19), pages 1-12, September.
    5. Ghorbani, Masoomeh & Solaimany Nazar, Ali Reza & Farhadian, Mehrdad & Tangestaninejad, Shahram, 2023. "Efficient tetracycline degradation and electricity production in photocatalytic fuel cell based on ZnO nanorod/BiOBr/UiO-66-NH2 photoanode and Cu2O/CuO photocathode," Energy, Elsevier, vol. 272(C).

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