Journal article
Can a breathing biocover system enhance methane emission reduction from landfill?
Based on the aerothermodynamic principles, a kind of breathing biocover system was designed to enhance O(2) supply efficiency and methane (CH(4)) oxidation capacity. The research showed that O(2) concentration (v/v) considerably increased throughout whole profiles of the microcosm (1m) equipped with passive air venting system (MPAVS).
When the simulated landfill gas SLFG flow was 771 g m(-3) d(-1) and 1028 g m(-3) d(-1), the O(2) concentration in MPAVS increased gradually and tended to be stable at the atmospheric level after 10 days. The CH(4) oxidation rate was 100% when the SLFG flow rate was no more than 1285 g m(-3) d(-1), which also was confirmed by the mass balance calculations.
The breathing biocover system with in situ self-oxygen supply can address the problem of O(2) insufficient in conventional landfill covers and/or biocovers. The proposed system presents high potential for improving CH(4) emission reduction in landfills.
Language: | English |
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Year: | 2011 |
Pages: | 228-233 |
ISSN: | 18733336 and 03043894 |
Types: | Journal article |
DOI: | 10.1016/j.jhazmat.2011.04.068 |