Methane oxidation in landfill cover soils, as revealed by potential oxidation measurements and phospholipid fatty acid analyses
作者： Gunnar Börjesson , Ingvar Sundh , Anders Tunlid , Bo H. Svensson
DOI: 10.1016/S0038-0717(97)00257-5
关键词:
摘要: Landfills account for ca. 10% of the annual global burden atmospheric methane. Part efflux is mitigated by means biological methane oxidation in landfill covers. In this study, two types cover soils (mineral soil and sewage sludge) were compared with respect to emissions as well potential capacity PLFA (phospholipid fatty acid) content samples. Methane fluxes lowest at a site where wastes covered old sludge. This consumed on most occasions. incubated samples from composed mineral soil, was strongly correlated concentration 18:1ω8, which typical type-II methanotrophic bacteria. contrast, fresh sludge, 16:1-PLFAs, indicating that type-I methanotrophs predominated, probably owing nutritional conditions being more favourable The results also indicate it takes long time, i.e. several years, get established soils.
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