Abatement of methane diffuse emissions by biotrickling filtration using polyurethane foam as carrier
نویسندگان
چکیده
Methane anthropogenic diffuse emissions (below 1 % vv) are important, with a significant contribution of the waste management sector (estimatedaround 21%). Since biological alternatives are especially promising for the treatment of a wide number of gaseous pollutants, a biotrickling filter packed with polyurethane foam was employed to study the abatement of methane (0.2 – 1 % vv) in air emissions. A long-term operation (180 days) under stable conditions in terms of process performance, pH and pressure drop was maintained. Short term assays were also performed to assess the effect of waterings, empty bed residence times (EBRT) and inlet loadsapplied. In spite of its hydrophobicity, maximum removal rates of 14.7 g CH4mhwere achieved, with removal efficiencies up to 30 %.Water addition is an important operational parameter to
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