title: Effect of air flowrate on the dynamic respiration activity of the raw organic fraction of municipal solid wastes.
abstract: Scope of this work was to study the effect of the aeration rate on the respiration activity of the fresh organic fraction of MSW and to compare the resulting dynamic respiration indices with those of MSW derived compost. Thus, a categorization of the dynamic respiration activity of MSW throughout a composting facility is provided. A simulated organic fraction of MSW was used as a substrate and four experimental runs were performed to achieve unit airflow rates (UAF) from around 6 to 30Lairkg-1VSh-1. Six dynamic respiration activity indices were calculated and compared to the corresponding indices of stable MSW compost from a previous work. Findings indicate that the increase of the UAF results in a corresponding increase of the dynamic stability indices. Dynamic respiration activity indices above 1500 and below 520mgO2kg-1VSh-1indicate fresh and very stable MSW materials, respectively.
authors.affiliation: Laboratory of Solid and Hazardous Waste Management, Department of Environmental Engineering, Democritus University of Thrace, Xanthi 67132, Greece.
authors.forename: Alexandros
authors.initials: A
authors.lastname: Evangelou
authors.affiliation: Laboratory of Solid and Hazardous Waste Management, Department of Environmental Engineering, Democritus University of Thrace, Xanthi 67132, Greece.
authors.forename: Vassilios
authors.initials: V
authors.lastname: Chintzios
authors.affiliation: Laboratory of Solid and Hazardous Waste Management, Department of Environmental Engineering, Democritus University of Thrace, Xanthi 67132, Greece; Composting Research Group, Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. Electronic address: dkomilis@env.duth.gr.
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Komilis
authors.affiliation: Composting Research Group, Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
authors.forename: Antoni
authors.initials: A
authors.lastname: Sánchez
mesh_terms: D000388:Air; D002245:Carbon Dioxide / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D012037:Refuse Disposal / Q000379:methods*; D012119:Respiration; D012987:Soil; D062611:Solid Waste
chemical_list: D012987:Soil; D062611:Solid Waste; D002245:Carbon Dioxide; D010100:Oxygen
keywords: Composting; Dynamic respiration index; Microbial respiration activity; Organic fraction MSW; Stability