Methane oxidation in three Alberta soils: influence of soil parameters and methane flux rates.

Abstract:

:Current concern over the potentially negative impacts of climate change has brought attention to anthropogenic sources of methane, a primary greenhouse gas. Two such emission sources are methane leakage at heavy oil wells and sanitary landfills. At both of these sources, substantial quantities of methane could potentially be oxidised by methanotrophic microbes living in soils. Optimisation of this phenomenon may serve as an inexpensive technique for reducing methane emissions. Soil column and batch incubation experiments were performed on a landfill loam, an agricultural loam and a sedge peat to gain a better quantitative understanding of the biological and physical processes limiting CH4 oxidation in soils that undergo the freeze-thaw cycles associated with northern climates. Moisture content emerged as a critical variable that can limit a soil's CH4 oxidation potential. For example, the oxidation rate of the agricultural soil was seen to increase by an order of magnitude after increasing its moisture content from 6% to 10% of its dry weight.

journal_name

Environ Technol

journal_title

Environmental technology

authors

Stein VB,Hettiaratchi JP

doi

10.1080/09593332208618315

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

101-11

issue

1

eissn

0959-3330

issn

1479-487X

journal_volume

22

pub_type

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