Effect of bio-cover equipped with a novel passive air diffusion system on methane emission reduciton from landfill

W.J. Lu, Zishen Mou

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Based on the aerothermodynamic principles, a kind of breathing bio-cover system was designed to enhance oxygen (O2) supply efficiency and methane (CH4) oxidation capacity. The research showed that O2 concentration (v/v) considerably increased throughout whole profiles of the microcosm (1m) equipped with passive air diffusion system (MPADS). When the simulated landfill gas SLFG flow was 771 and 1028 gm−3 d−1, the O2 concentration in MPADS increased gradually and tended to be stable at the atmospheric level after 10 days. The CH4 oxidation rate was 100% when the SLFG flow rate was no more than 1285 gm−3 d−1, which also was confirmed by the mass balance calculations. The breathing bio-cover system with in situ self-oxygen supply can address the problem of O2 insufficient in conventional landfill bio-cover. The proposed system presents high potential for improving CH4 emission reduction in landfills.
    Original languageEnglish
    Title of host publicationSardinia 2011 Proceedings : Thirteenth International Waste management and Landfill Symposium
    Number of pages9
    PublisherCISA, Environmental Sanitary Engineering Centre
    Publication date2011
    Publication statusPublished - 2011
    Event13th International Waste Management and Landfill Symposium - S. Margherita di Pula, Cagliari, Italy
    Duration: 3 Oct 20117 Oct 2011
    Conference number: 13

    Conference

    Conference13th International Waste Management and Landfill Symposium
    Number13
    Country/TerritoryItaly
    CityS. Margherita di Pula, Cagliari
    Period03/10/201107/10/2011

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