title: Study of the VOC emissions from a municipal solid waste storage pilot-scale cell: comparison with biogases from municipal waste landfill site.
abstract: The emission of volatile organic compounds (VOCs) from municipal solid waste stored in a pilot-scale cell containing 6.4 tonnes of waste (storage facility which is left open during the first period (40 days) and then closed with recirculation of leachates during a second period (100 days)) was followed by dynamic sampling on activated carbon and analysed by GC-MS after solvent extraction. This was done in order to know the VOC emissions before the installation of a methanogenesis process for the entire waste mass. The results, expressed in reference to toluene, were exploited during the whole study on all the analyzable VOCs: alcohols, ketones and esters, alkanes, benzenic and cyclic compounds, chlorinated compounds, terpene, and organic sulphides. The results of this study on the pilot-scale cell are then compared with those concerning three biogases from a municipal waste landfill: biogas (1) coming from waste cells being filled or recently closed, biogas (2) from all the waste storage cells on site, and biogas (3) which is a residual gas from old storage cells without aspiration of the gas. The analysis of the results obtained revealed: (i) a high emission of VOCs, principally alcohols, ketones and esters during the acidogenesis; (ii) a decrease in the alkane content and an increase in the terpene content were observed in the VOCs emitted during the production of methane; (iii) the production of heavier alkanes and an increase in the average number of carbon atoms per molecule of alkane with the progression of the stabilisation/maturation process were also observed. Previous studies have concentrated almost on the analysis of biogases from landfills. Our research aimed at gaining a more complete understanding of the decomposition/degradation of municipal solid waste by measuring the VOCs emitted from the very start of the landfill process i.e. during the acidogenesis and acetogenesis phases.
authors.affiliation: Université de Lyon, Université Lyon 1, CNRS, UMR 5615, Laboratoire des Multimatériaux et Interfaces, 43 boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France. rodica.chiriac@univ-lyon1.fr
authors.forename: R
authors.initials: R
authors.lastname: Chiriac
authors.forename: J
authors.initials: J
authors.lastname: De Araujos Morais
authors.forename: J
authors.initials: J
authors.lastname: Carre
authors.forename: R
authors.initials: R
authors.lastname: Bayard
authors.forename: J M
authors.initials: JM
authors.lastname: Chovelon
authors.forename: R
authors.initials: R
authors.lastname: Gourdon
mesh_terms: D056804:Biofuels / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D010865:Pilot Projects; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods*; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000737:chemistry
chemical_list: D056804:Biofuels; D012989:Soil Pollutants; D055549:Volatile Organic Compounds