Methane emission and methane oxidation in land-fill cover soil

Jones, H

doi:10.1016/0378-1097(93)90201-c

Cited by 39 publications

(48 citation statements)

References 17 publications

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“…Landfill sites have been a particularly active area for studies of methane oxidation (Whalen et al, 1990;Jones and Nedwell, 1993) and for studies of isotope fractionation of methane during oxidation Bergamaschi et al, 1998b;Liptay et al, 1998). A laboratory study (Kightley et al, 1995) employing soil microcosms successfully reproduced the 'methane: oxygen crossover' zone observed in landfill cover soils and confirmed the high methane-oxidizing capacity of this zone as a control on atmospheric CH 4 emissions.…”

Section: Animals and Landfillsmentioning

confidence: 75%

Global Methane Biogeochemistry

Reeburgh

2014

Treatise on Geochemistry

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Section: Animals and Landfillsmentioning

confidence: 75%

Global Methane Biogeochemistry

Reeburgh

2014

Treatise on Geochemistry

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“…These bacteria are ubiquitous in aerobic soils and provide a significant sink for atmospheric CH 4 (Hutsch, 2001). Methanotrophic bacterial communities respond within a matter of weeks to new sources of CH 4 such as gas leaks (Hoeks, 1972a;Whalen et al, 1990) and under appropriate conditions of temperature and soil moisture, they can metabolise very rapidly, limited only by the supply of CH 4 and O 2 (Hoeks, 1972a;Jones and Nedwell, 1993). In this study oxidation of CH 4 occurred at a greater rate in the warm summer months.…”

Section: Effect Of Bacterial Oxidationmentioning

confidence: 98%

“…The rate of CH 4 consumption could be as high as the rate of supply. Jones and Nedwell (1993) showed that methanotrophic bacterial activity depends upon the presence of sufficiently high concentrations of both CH 4 and O 2 . Hence the bacteria tend to be confined to fairly narrow horizontal bands within their habitat, limited in their distribution by the downward diffusion of atmospheric O 2 and the upward diffusion of CH 4 .…”

Section: Effect Of Bacterial Oxidationmentioning

confidence: 99%

A Facility to Investigate Effects of Elevated Soil Gas Concentration on Vegetation

Smith

Colls

Steven

2005

Water Air Soil Pollut

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A facility has been developed at the University of Nottingham at which natural gas can be injected into soil to investigate the effects on the soil ecology and on the growth and development of plants. The facility involves 18 plots, 12 of which are equipped with a regulated and metered gas supply. The gas is released from a diffusive point source 1 m below the centre of each plot. Permanent pasture grass, wheat and bean were gassed from gas was injected into additional plots of each species to determine the effects of a new leak on a fully established crop. Spatial and temporal variability of soil gas concentrations were determined by two complementary methods. First, by daily extraction of soil gas samples from permanently buried sample pipes that come to diffusive equilibrium with the adjacent soil gas concentration. Second, by intermittent extraction of soil gas samples from bar holes inserted on a 50-cm grid. Contour plots of spatial variation were then constructed from the bar hole data.Methane (CH 4 ) concentrations near the centres of the plots were variable. They could reach values of up to 80% gas, but decreased rapidly away from the area of peak concentration. No relationship was found between gas flow rate or soil gas concentration and atmospheric pressure or other meteorological parameters. Soil structure affected gas dispersion, and an inverse relationship was found between CH 4 and O 2 concentrations.The grass showed visible symptoms within 44 days, whereas wheat and bean developed symptoms after four months. These symptoms included a circle of chlorosis in grass and poor development and leaf chlorosis for the wheat and bean. When the same species were gassed from mid-May; the wheat and bean showed no visible symptoms but the late-gassed grass also developed a further circle of yellowing.

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“…High affinity system operates at the CH 4 concentrations close to that of the atmosphere (<12 ppm), while low affinity oxidation carried out by the known cultured methanotrophs operates at CH 4 concentrations >40 ppm (Jones and Nedwell, 1993;King et al, 1990;Singh et al, 2010;. In a study conducted in temperate forest soil, high affinity CH 4 oxidation was found to saturate at >500 ppm and it disappeared at CH 4 concentration <5 ppm, while at the same time low affinity CH 4 oxidation was found to saturate at ∼3 × 10 4 ppm (Reay and Nedwell, 2004).…”

Section: Diversity Of Methanotrophsmentioning

confidence: 99%