title: Anaerobic digestion of extruded OFMSW.
abstract: Organic fraction of municipal solid waste (OFMSW) was used to feed two pilot plants of 1000 l working in anaerobic conditions. The OFMSW had previously been treated using a system of extrusion which, due to exerted pressure, separates the undesired fractions of waste from organic waste and reduces the organic fraction in a kind of homogeneous jam. Pilot tests were performed in semi-continuous conditions with a stepwise progressive increase of the total solids content (TS) of the input material from 3% TS w/w (1.5 g VS l(-1) d(-1) organic loading rate) to 10% TS w/w (4.3 g VS l(-1) d(-1) organic loading rate) using activated sludge as diluting agent. The average specific biogas production obtained was 600 l kg(-1)VS. When the input TS content was increased to 10% w/w, the biogas average specific production went up to 800 l kg(-1)VS. The methane content in the biogas was always higher than 60% measured by volume.
authors.affiliation: Politecnico di Torino, Dipartimento di Ingegneria del Territorio, dell'Ambiente e delle Geotecnologie, C.so Duca degli Abruzzi 24, 10124 Turin, Italy. daniel.novarino@polito.it
authors.forename: Daniel
authors.initials: D
authors.lastname: Novarino
authors.forename: Maria Chiara
authors.initials: MC
authors.lastname: Zanetti
mesh_terms: D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008697:Methane / Q000378:metabolism*; D009930:Organic Chemicals / Q000302:isolation & purification / Q000378:metabolism*; D010865:Pilot Projects; D011312:Pressure; D012037:Refuse Disposal / Q000379:methods*
chemical_list: D009930:Organic Chemicals; D008697:Methane