Changes in landfill gas quality as a result of controlled air injection

    Authors

    J. Powell; P. Jain; H. D. Kim; T. Townsend;D. Reinhart

    Comments

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    Abbreviated Journal Title

    Environ. Sci. Technol.

    Keywords

    VOLATILE ORGANIC-COMPOUNDS; SOLID-WASTE LANDFILL; CARBON-MONOXIDE; EMISSION; MANAGEMENT; SITE; SOIL; Engineering, Environmental; Environmental Sciences

    Abstract

    Air addition has been proposed as a technique for rapid stabilization of municipal solid waste (MSW) in landfills. The objective of this study was to observe the change in concentration of trace constituents of landfill gas in response to air addition. Air injection tests were conducted at a MSW landfill in Florida, and the concentrations of several gaseous constituents at adjacent wells within the waste were measured. The concentrations of methane, carbon dioxide, and oxygen, as well as several trace constituents, were measured both prior to and during air addition. The trace components investigated included a suite of volatile organic compounds (VOCs), nitrous oxide (N2O), carbon monoxide (CO), and hydrogen sulfide (H2S). A significant increase in CO was observed in 9 of 14 monitoring points; overall, CO concentrations were found to increase as the ratio of CH4 to CO2 decreased. A significant decrease in H2S was observed at 6 of 14 monitoring points. Air injection did not have a noticeable affect on VOC or N2O concentrations compared to initial levels.

    Journal Title

    Environmental Science & Technology

    Volume

    40

    Issue/Number

    3

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    1029

    Last Page

    1034

    WOS Identifier

    WOS:000235227600066

    ISSN

    0013-936X

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