Environmental impact of sewage sludge co-digestion with food waste and fat-oil-grease: Integrating plant-wide modeling with life cycle assessment approach

Filiz Daskiran*, Hazal Gulhan, Emircan Kara, Huseyin Guven, Hale Ozgun, Mustafa Evren Ersahin

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1 Atıf (Scopus)

Özet

Anaerobic co-digestion of fat-oil-grease (FOG) and food waste (FW) with sewage sludge (SS) in wastewater treatment plants is a method used to increase biogas production. In this study, digestion scenarios were compared using plant-wide modeling and life cycle assessment: Scenario-0 (mono-digestion of waste-activated sludge (WAS)), Scenario-1 (co-digestion of WAS with FOG), and Scenario-2 (co-digestion of WAS with FW). Scenario-0, with the highest energy use and landfilling of FOG/FW, has the worst environmental impact. Scenario-1 and Scenario-2 minimize the environmental load by energy recovery and avoiding landfilling of organic waste. Scenario-wise, the change in greenhouse gas (GHG) emissions from treatment was negligible. However, due to the impact of landfilling, GHG emissions in Scenario-0 were 21% and 30% higher than in Scenario-1 and 2, respectively. The environmental benefit of anaerobic co-digestion of FOG/FW with SS is not only in the contribution to energy production but also in the recycling of organic waste.

Orijinal dilİngilizce
Makale numarası130198
DergiBioresource Technology
Hacim394
DOI'lar
Yayın durumuYayınlandı - Şub 2024

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Publisher Copyright:
© 2023 Elsevier Ltd

Finansman

The authors would like to express their gratitude for the support of the Istanbul Technical University, Scientific Research Projects: Filiz Daskiran (Project No: 43646) and Emircan Kara (Project No: 44607). The authors would like to express their gratitude to Istanbul Water and Sewerage Administration (ISKI) for providing data. The authors would like to express their gratitude for the support of the Istanbul Technical University , Scientific Research Projects: Filiz Daskiran (Project No: 43646 ) and Emircan Kara (Project No: 44607 ). The authors would like to express their gratitude to Istanbul Water and Sewerage Administration (ISKI) for providing data.

FinansörlerFinansör numarası
Filiz Daskiran44607, 43646
ISKI
Istanbul Water and Sewerage Administration
Istanbul Teknik Üniversitesi

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