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Assessment of the Methane Oxidation Capacity of SoilsDivision of Waste Science and Technology, Luleå University of Technology, SE-971 87 Luleå, Sweden, chma{at}sb.luth.se
Division of Waste Science and Technology, Luleå University of Technology, SE-971 87 Luleå, Sweden Methane oxidation capacity of three soil matrices was assessed using a new method based on the pressure fall resulting from methane oxidation. The effects of incubation temperature, moisture and methane content on the oxidation capacity were studied. Parameters observed were non-methanotrophic oxygen consumption, methane assimilation, length of the lag period before steady pressure fall was reached, initial pressure fall and maximum pressure fall. Filling material taken from a biofilter was tested. The length of the lag period was an index of prior exposure of the soil to methane emissions. Incubation temperature of 30°C and soil moisture at the water-holding capacity were chosen to standardize the test. Oxygen depletion by non-methanotrophs varied between 40 and 60% of the total oxygen consumption while methane assimilation was at 40 to 50% of the total methane consumption.
Key Words: Methane • soil oxidation capacity • biofilter filling matrix • biogas release methanotrophic bacteria • wmr 543-6
Waste Management & Research, Vol. 22, No. 1,
42-48 (2004) This article has been cited by other articles:
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