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Fermentation
Volume 10
Issue 12
10.3390/fermentation10120600
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Co-Digestion of Dehydrated Sewage Sludge (DSS) and Organic Fraction of Municipal Solid Waste (OFMSW): Analysis of the Process and Economic Evaluations

by
Carlo Limonti
1,*,
Adolfo Le Pera
2,
Miriam Sellaro
2,
Giulia Grande
2,
Giulia Maria Curcio
1,
Tiziana Andreoli
1,
Elvis Gribaldo Aucancela Rivera
1 and
Alessio Siciliano
1,*
1
Laboratory of Sanitary and Environmental Engineering, Department of Environmental Engineering, University of Calabria, 87036 Rende, CS, Italy
2
Calabra Maceri & Servizi SpA, 87036 Rende, CS, Italy
*
Authors to whom correspondence should be addressed.
Fermentation 2024, 10(12), 600; https://doi.org/10.3390/fermentation10120600 (registering DOI)
Submission received: 6 November 2024 / Revised: 21 November 2024 / Accepted: 22 November 2024 / Published: 24 November 2024
(This article belongs to the Special Issue Anaerobic Digestion of Sewage Sludge: New Insights and Future Challenges)
Versions Notes

Abstract

This study aimed to assess the efficacy of anaerobic digestion (AD) in the co-digestion of the organic fraction of municipal solid waste (OFMSW) and municipal dehydrated sewage sludge (DSS). The experiments were conducted in batch and continuous mode under mesophilic conditions (T = 37 ± 2 °C). The results of batch tests indicated that the use of DSS in co-digestion with OFMSW led to a biomethane production of 422 NmLCH4/gVS with a production yield of 450 NmLCH4/gVSremoved. Nevertheless, the findings of the tests conducted with OFMSW alone demonstrated superior performance. A pilot plant reactor with a volume of approximately 2 m3 was employed in the continuous tests. The results corroborated the trends observed in the batch tests. In particular, the specific methane production yields decreased from 0.47 Nm3/kgVS when OFMSW was the sole substrate to 0.44 Nm3/kgVS when DSS was introduced, with a DSS/OFMSW ratio (RDO) of 0.1. Despite the reduction in methane production yield observed in both batch and continuous tests, a techno-economic assessment of the process indicated the potential profitability of DSS in co-digestion with OFMSW. Notably, the estimated profit from utilizing DSS in a percentage of 10% (RDO = 0.1) is 108 EUR/ton, compared to 102 EUR/ton when only OFMSW is employed.
Keywords: anaerobic co-digestion; dehydrated sewage sludge; methane production; organic fraction of municipal solid waste anaerobic co-digestion; dehydrated sewage sludge; methane production; organic fraction of municipal solid waste

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MDPI and ACS Style

Limonti, C.; Le Pera, A.; Sellaro, M.; Grande, G.; Curcio, G.M.; Andreoli, T.; Aucancela Rivera, E.G.; Siciliano, A. Co-Digestion of Dehydrated Sewage Sludge (DSS) and Organic Fraction of Municipal Solid Waste (OFMSW): Analysis of the Process and Economic Evaluations. Fermentation 2024, 10, 600. https://doi.org/10.3390/fermentation10120600

AMA Style

Limonti C, Le Pera A, Sellaro M, Grande G, Curcio GM, Andreoli T, Aucancela Rivera EG, Siciliano A. Co-Digestion of Dehydrated Sewage Sludge (DSS) and Organic Fraction of Municipal Solid Waste (OFMSW): Analysis of the Process and Economic Evaluations. Fermentation. 2024; 10(12):600. https://doi.org/10.3390/fermentation10120600

Chicago/Turabian Style

Limonti, Carlo, Adolfo Le Pera, Miriam Sellaro, Giulia Grande, Giulia Maria Curcio, Tiziana Andreoli, Elvis Gribaldo Aucancela Rivera, and Alessio Siciliano. 2024. "Co-Digestion of Dehydrated Sewage Sludge (DSS) and Organic Fraction of Municipal Solid Waste (OFMSW): Analysis of the Process and Economic Evaluations" Fermentation 10, no. 12: 600. https://doi.org/10.3390/fermentation10120600

APA Style

Limonti, C., Le Pera, A., Sellaro, M., Grande, G., Curcio, G. M., Andreoli, T., Aucancela Rivera, E. G., & Siciliano, A. (2024). Co-Digestion of Dehydrated Sewage Sludge (DSS) and Organic Fraction of Municipal Solid Waste (OFMSW): Analysis of the Process and Economic Evaluations. Fermentation, 10(12), 600. https://doi.org/10.3390/fermentation10120600

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