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Co-digestion of the hydromechanically separated organic fraction of municipal solid waste with sewage sludge

Name: Co-digestion of the hydromechanically separated organic fraction of municipal solid waste with sewage sludge
Creator: Sebastian Borowski
Keywords: Sewage, 020209 energy, 0211 other engineering and technologies, 02 engineering and technology, Hydrogen-Ion Concentration, Fatty Acids, Volatile, Solid Waste, 7. Clean energy, 6. Clean water, 12. Responsible consumption

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2015Publisher:Elsevier BVJournal:Journal of Environmental Management, volume 147, pages 87-94 (issn: 0301-4797,

Authors: Sebastian Borowski;

doi: 10.1016/j.jenvman.2014.09.013

pmid: 25262391

Co-digestion of the hydromechanically separated organic fraction of municipal solid waste with sewage sludge

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Abstract

This study investigates the anaerobic digestion of the hydromechanically sorted organic fraction of municipal solid wastes (HS-OFMSW) co-digested with sewage sludge (SS). Eight laboratory-scale experiments were conducted under semi-continuous conditions at 15 and 20 days of solids retention time (SRT). The biogas yield from the waste reached 309 to 315 dm(3)/kgVS and 320 to 361 dm(3)/kgVS under mesophilic and thermophilic conditions, respectively. The addition of SS to HS-OFMSW (1:1 by weight) improved the C/N balance of the mixture, and the production of biogas through anaerobic mesophilic digestion increased to 494 dm(3)/kgVS, which corresponded to 316 dm(3)CH4/kgVS. However, when SS and HS-OFMSW were treated under thermophilic conditions, methanogenesis was inhibited by volatile fatty acids and free ammonia, which concentrations reached 5744 gCH3COOH/m(3) and 1009 gNH3/m(3), respectively.

Related Organizations

University of Łódź
Poland
Lodz University of Technology
Poland

Keywords

Sewage, Hydrogen-Ion Concentration, Fatty Acids, Volatile, Solid Waste, Bioreactors, Waste Management, Biofuels

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