title: Enhancing biogas production from anaerobic biodegradation of the organic fraction of municipal solid waste through leachate blending and recirculation.
abstract: Leachate recirculation has a profound advantage on biodegradation of the organic fraction of municipal solid waste in landfills. Mature leachate from older sections of landfills (>10 years) and young leachate were blended and added to organic fraction of municipal solid waste in a series of biomethane potential assay experiments with different mixing ratios of mature and young leachate and their effect on biogas production was monitored. The improvement in biogas production was in the range of 19%-41% depending on the ratio of mixing old and new leachate. The results are conclusive that the biogas generation could be improved by blending the old and new leachate in a bioreactor landfill system as compared with a conventional system employed in bioreactor landfills today for recirculating the same age leachate.
authors.affiliation: Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Arjun
authors.initials: A
authors.lastname: Nair
authors.affiliation: Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada msartaj@uottawa.ca.
authors.forename: Majid
authors.initials: M
authors.lastname: Sartaj
authors.affiliation: Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Kevin
authors.initials: K
authors.lastname: Kennedy
authors.affiliation: Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Nuno M G
authors.initials: NM
authors.lastname: Coelho
mesh_terms: D001673:Biodegradation, Environmental; D056804:Biofuels / Q000032:analysis*; D019149:Bioreactors; D012037:Refuse Disposal; D062611:Solid Waste / Q000032:analysis; D064091:Waste Disposal Facilities; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D056804:Biofuels; D062611:Solid Waste; D014874:Water Pollutants, Chemical
keywords: Anaerobic digestion; biodegradability; biomethane potential; bioreactor landfills; leachate recirculation