Université de Lyon, Université Lyon 1, CNRS, UMR 5615, Laboratoire des Multimatériaux et Interfaces, 43 boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France.
Waste Manag. 2011 Nov;31(11):2294-301. doi: 10.1016/j.wasman.2011.06.009. Epub 2011 Jul 22.
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.
对含有 6.4 吨废物的中试规模单元（在第一个阶段（40 天）期间保持敞开，然后在第二个阶段（100 天）期间通过浸出液的再循环关闭）中储存的城市固体废物中挥发性有机化合物（VOCs）的排放进行了动态采样，然后在溶剂萃取后通过 GC-MS 进行分析。这样做是为了在整个废物质量安装甲烷生成过程之前了解 VOC 排放情况。在整个研究中，所有可分析的 VOC（醇、酮和酯、烷烃、苯和环状化合物、氯化物、萜烯和有机硫化物）都以甲苯为参考进行了表达。这项中试规模单元的研究结果随后与三个城市垃圾填埋场的生物气进行了比较：生物气（1）来自正在填充或最近关闭的废物单元，生物气（2）来自现场所有废物储存单元，以及生物气（3）来自没有抽吸气体的旧储存单元的残留气体。对获得的结果进行分析后发现：（i）在产酸阶段，VOC 排放量大，主要为醇、酮和酯；（ii）在产甲烷阶段，VOC 中烷烃含量降低，萜烯含量增加；（iii）在稳定/成熟过程中，观察到较重的烷烃的产生和烷烃分子中碳原子平均数量的增加。以前的研究几乎都集中在分析垃圾填埋场的生物气上。我们的研究旨在通过测量从垃圾填埋过程开始（即产酸和产乙酸阶段）就从垃圾填埋场中排放的 VOC，更全面地了解城市固体废物的分解/降解情况。
