title: Gaseous emissions in municipal wastes composting: effect of the bulking agent.
abstract: In this study, the emissions of volatile organic compounds (VOC), CH4, N2O and NH3 during composting non-source selected MSW, source selected organic fraction of municipal solid wastes (OFMSW) with wood chips as bulking agent (OF_wood) and source selected OFMSW with polyethylene (PE) tube as bulking agent (OF_tube) and the effect of bulking agent on these emissions have been systematically studied. Emission factors are provided (in kg compound Mg(-1) dry matter): OF_tube (CH4: 0.0185±0.004; N2O: 0.0211±0.005; NH3: 0.612±0.269; VOC: 0.688±0.082) and MSW (CH4: 0.0549±0.0171; N2O: 0.032±0.015; NH3: 1.00±0.20; VOC: 1.05±0.18) present lower values than OF_wood (CH4: 1.27±0.09; N2O: 0.021±0.006; NH3: 4.34±2.79; VOC: 0.989±0.249). A detailed composition of VOC is also presented. Terpenes were the main emitted VOC family in all the wastes studied. Higher emissions of alpha and beta pinene were found during OF_wood composting processes.
authors.affiliation: Composting Research Group, Department of Chemical Engineering, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain.
authors.forename: Caterina
authors.initials: C
authors.lastname: Maulini-Duran
authors.affiliation: Composting Research Group, Department of Chemical Engineering, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain. Electronic address: adriana.artola@uab.cat.
authors.forename: Adriana
authors.initials: A
authors.lastname: Artola
authors.affiliation: Composting Research Group, Department of Chemical Engineering, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain.
authors.forename: Xavier
authors.initials: X
authors.lastname: Font
authors.affiliation: Composting Research Group, Department of Chemical Engineering, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain.
authors.forename: Antoni
authors.initials: A
authors.lastname: Sánchez
mesh_terms: D000641:Ammonia / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D008697:Methane / Q000032:analysis*; D009585:Nitrogen Dioxide / Q000032:analysis*; D020959:Polyethylene; D052617:Solid Phase Microextraction; D055549:Volatile Organic Compounds / Q000032:analysis*; D018505:Waste Management; D014934:Wood
chemical_list: D055549:Volatile Organic Compounds; D000641:Ammonia; D020959:Polyethylene; D008697:Methane; D009585:Nitrogen Dioxide
keywords: Bulking agent; Composting; Gaseous emissions; Terpenes; VOC