title: Enhanced biogas production from anaerobic codigestion of solid waste by sonolysis.
abstract: This paper examines the effectiveness of sonolysis in improving the anaerobic biodegradability of the organic fraction of municipal solid waste coming from mechanical selection, thus enhancing biogas production and energy recovery as well. Methane yield of solid organic material anaerobic digestion is significantly affected by substrate availability that was evaluated, in this investigation, through organic matter solubilisation tests carried out at different conditions of ultrasound treatment. Results show that sonolysis can significantly improve the solubilisation of organic solid waste, thus allowing higher biogas production from anaerobic treatment of sonicated substrates. After 45 days, the biogas produced during anaerobic codigestion tests for the sonicated mixture was 24% higher than untreated one. Therefore, these results can lay the basis for the development of technologies useful to produce high biogas quantities, in order to improve clean energy generation from biowaste.
authors.affiliation: Sanitary and Environmental Engineering Division, Department of Civil Engineering, University of Salerno, via Ponte Don Melillo - 84084 Fisciano, SA, Italy. acesaro@unisa.it
authors.forename: Alessandra
authors.initials: A
authors.lastname: Cesaro
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Naddeo
authors.forename: Valeria
authors.initials: V
authors.lastname: Amodio
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Belgiorno
mesh_terms: D001421:Bacteria, Anaerobic / Q000378:metabolism* / Q000528:radiation effects*; D019220:High-Energy Shock Waves; D008697:Methane / Q000138:chemical synthesis* / Q000378:metabolism* / Q000528:radiation effects; D009930:Organic Chemicals / Q000737:chemistry / Q000378:metabolism / Q000528:radiation effects*; D011829:Radiation Dosage; D012037:Refuse Disposal / Q000379:methods; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D013010:Sonication / Q000379:methods*
chemical_list: D009930:Organic Chemicals; D012722:Sewage; D008697:Methane