dzȯ ȸ
13 4ȣ, December 2014
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ISSN : 2288-9167 (Print)
ISSN : 2288-923X (Online)
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Effect of amine compounds on biological oxidation of methane
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Abstracts
Landfills are nettlesome sources of malodorous gases as well as methane that has the second largest radiative
forcing of long residence-greenhouse gases, followed carbon dioxide. Because methane and malodorous gases are
simultaneously emitted in landfills, investigation of whether or not methane and malodorous gases affect each
others degradation is important. Amines such as monomethylamine(MMA), dimethylamine(DMA) and
trimethylamine(TMA) are representative malodorous gases from landfills. In this study, the effect of amines on
the bio-oxidation of methane was evaluated using a methane-oxidizing consortium where the dominant bacteria
were Methylocystis spp. Amines inhibited the methane oxidation by the consortium, and the inhibition effect
increased in the order of TMA > DMA > MMA. Methane oxidation rates in the consortium decreased with
increasing amine/methane ratio(mol/mol). These results can be used to design and optimize the biological processes
for simultaneous removal of methane and malodorous gases.
Keywords : Methane, Odor, Amine compounds, Biological oxidation, Inhibition