Mesophilic anaerobic co-digestion of municipal solid waste and sewage sludge

Ehsan Fathi Aghdam, V. Kinnunen, Jukka A. Rintala

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Abstract

This paper presents mesophilic anaerobic digestion (AD) of organic fraction of municipal solid waste (OFMSW), biowaste (BW), sewage sludge (SS), and co-digestion of BW and SS. Average methane yields of 386 ± 54, 385 ± 82, 198 ± 14, and 318 ± 59 L CH4/kg volatile solids (VS) were obtained for OFMSW, BW, SS, and co-digestion of BW and SS respectively in reactor experiment with organic loading rate (OLR) of 1 and 2 kg VS / m3 d. Average methane yield of SS was increased by 61% as a result of co-digestion with BW.
Methane potentials of 603, 534, and 369 L CH4/kg VS were obtained for BW, OFMSW and SS respectively in batch experiments at 35 °C. Methane potential of source-separated BW was 12% higher than methane yield observed for mechanically treated OFMSW, which can be interpreted as a positive effect of source-separation on methane potential.
Original languageEnglish
Title of host publicationProceedings Sardinia 2015 : Fifteenth International Waste Management and Landfill Symposium
EditorsS. Margherita di Pula
Number of pages9
Place of PublicationCagliari, Italy
PublisherCISA Publisher
Publication date2015
Publication statusPublished - 2015
EventSardinia 2015 - 15th International Waste Management and Landfill Symposium - Cagliari, Italy
Duration: 5 Oct 20159 Oct 2015
Conference number: 15

Conference

ConferenceSardinia 2015 - 15th International Waste Management and Landfill Symposium
Number15
CountryItaly
CityCagliari
Period05/10/201509/10/2015

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