Kinetics of microbial landfill methane oxidation in biofilters

Gebert, Julia; Groengroeft, Alexander; Miehlich, Günter

doi:10.1016/s0956-053x(03)00105-3

Cited by 152 publications

(123 citation statements)

References 24 publications

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“…GPPTs are not easily applicable at sites with low oxidation rates and high water saturation (Gomez et al, 2008;Urmann et al, 2007), such as tundra wetlands, and have only been successfully applied in near-surface soils with a cylinder driven 50 cm into the soil (Nauer and Schroth, 2010). Furthermore, mass balance calculations using loading and surface flux measurements to determine the fraction of oxidized CH 4 , e.g., in biofilters or landfill cover soils (Powelson et al, 2007;Cabral et al, 2010;Gebert et al, 2003), are difficult to apply in wetlands since loading rates cannot be quantified in these open systems.…”

Section: Introductionmentioning

confidence: 99%

Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation

et al. 2013

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Abstract. Permafrost-affected tundra soils are significant sources of the climate-relevant trace gas methane (CH4). The observed accelerated warming of the arctic will cause deeper permafrost thawing, followed by increased carbon mineralization and CH4 formation in water-saturated tundra soils, thus creating a positive feedback to climate change. Aerobic CH4 oxidation is regarded as the key process reducing CH4 emissions from wetlands, but quantification of turnover rates has remained difficult so far. The application of carbon stable isotope fractionation enables the in situ quantification of CH4 oxidation efficiency in arctic wetland soils. The aim of the current study is to quantify CH4 oxidation efficiency in permafrost-affected tundra soils in Russia's Lena River delta based on stable isotope signatures of CH4. Therefore, depth profiles of CH4 concentrations and δ13CH4 signatures were measured and the fractionation factors for the processes of oxidation (αox) and diffusion (αdiff) were determined. Most previous studies employing stable isotope fractionation for the quantification of CH4 oxidation in soils of other habitats (such as landfill cover soils) have assumed a gas transport dominated by advection (αtrans = 1). In tundra soils, however, diffusion is the main gas transport mechanism and diffusive stable isotope fractionation should be considered alongside oxidative fractionation. For the first time, the stable isotope fractionation of CH4 diffusion through water-saturated soils was determined with an αdiff = 1.001 &pm; 0.000 (n = 3). CH4 stable isotope fractionation during diffusion through air-filled pores of the investigated polygonal tundra soils was αdiff = 1.013 &pm; 0.003 (n = 18). Furthermore, it was found that αox differs widely between sites and horizons (mean αox = 1.017 ± 0.009) and needs to be determined on a case by case basis. The impact of both fractionation factors on the quantification of CH4 oxidation was analyzed by considering both the potential diffusion rate under saturated and unsaturated conditions and potential oxidation rates. For a submerged, organic-rich soil, the data indicate a CH4 oxidation efficiency of 50% at the anaerobic–aerobic interface in the upper horizon. The improved in situ quantification of CH4 oxidation in wetlands enables a better assessment of current and potential CH4 sources and sinks in permafrost-affected ecosystems and their potential strengths in response to global warming.

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Section: Introductionmentioning

confidence: 99%

Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation

et al. 2013

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“…In our case, E 2 is two times higher than E 1 . For comparison, Gebert et al have calculated an energy activation of 74.5 kJ/mol for CH 4 oxidation in a biofi lter for a temperature rise from 10°C to 20°C [17]. However, it may be hypothesized that the nutrient uptake is higher in the top section and therefore deprived the bottom section from the micro and macronutrients.…”

Section: Parameters For Modeling the Effect Of The Temperaturementioning

confidence: 99%

“…An optimal water level range should be sought for each fi lter material to prevent the drying-out of the fi lter bed or reversely, water clogging. The fi rst event causes a signifi cant reduction in the biodegradation rate while the second inhibits the transfer of oxygen and CH 4 and promotes the development of anaerobic zones [17,18]. Several studies have dealt with the optimal range of moisture for CH 4 biofi ltration using different fi lter beds.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the effects of temperature, the amount of nutrient solution and the carbon dioxide concentration on methane biofiltration

Ménard¹,

Ramírez²,

Nikiema³

et al. 2011

Int. J. SDP

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Landfi ll gas emissions contribute to the greenhouse effect due to the presence of methane (CH 4 ). CH 4 emissions from old and small landfi lls can be reduced by using biofi ltration. The objective of this study was to optimize parameters that control CH 4 removal in a biofi lter. Temperature is one of the important parameters as well as the amount of nutrient solution (NS) supplied. The effects of the carbon dioxide (CO 2 ) concentration on CH 4 biofi ltration were also studied. Four biofi lters using an inorganic fi lter bed were studied under similar conditions: an inlet CH 4 concentration of 7000 ppmv and an air fl ow rate of 0.25 m 3 /h. A NS was supplied daily. The temperature was varied from 4°C to 43°C. The highest performance was obtained in the range of 31-34°C with an elimination capacity (EC) of 30 g CH 4 /m 3 /h for an inlet load (IL) of 80 g CH 4 /m 3 /h. The effect of the amount of NS supplied to the biofi lter at ambient temperature was also analyzed. The EC was 23 g CH 4 /m 3 /h for both 101 L NS /m 3 V bed /d and 34 L NS /m 3 V bed /d, but it fell to 17 g CH 4 /m 3 /h at 17 L NS /m 3 V bed /d. CO 2 concentrations were varied from 650 to 18,500 ppmv and no effect was noticed on the EC which remained constant at 18 g CH 4 /m 3 /h for an inlet load of 72 g CH 4 /m 3 /h.

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“…From the limited number of phylogenetic studies done to date on the effect of temperature on methanotrophic communities it appears that Type I methanotrophs dominate at low temperatures in biofilters (Gebert, et al, 2003(Gebert, et al, , 2004, and all characterized psychrophilic methanotrophs to date are within the γ-Proteobacteria. This conclusion is supported by more recent studies of methanotrophic communities in landfill soils, where it was found that Type I signals were more dominant at 10º C than 20º C using PLFA analyses (Börjesson, et al, 2004).…”

Section: Temperaturementioning

confidence: 99%

Strategies to Optimize Microbially-Mediated Mitigation of Greenhouse Gas Emissions from Landfill Cover Soils

Semrau¹,

Lee²,

Im³

et al. 2010

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The overall objective of this project, "Strategies to Optimize Microbially-Mediated Mitigation of Greenhouse Gas Emissions from Landfill Cover Soils" was to develop effective, efficient, and economic methodologies by which microbial production of nitrous oxide can be minimized while also maximizing microbial consumption of methane in landfill cover soils. A combination of laboratory and field site experiments found that the addition of nitrogen and phenylacetylene stimulated in situ methane oxidation while minimizing nitrous oxide production. Molecular analyses also indicated that methane-oxidizing bacteria may play a significant role in not only removing methane, but in nitrous oxide production as well, although the contribution of ammonia-oxidizing archaea to nitrous oxide production can not be excluded at this time. Future efforts to control both methane and nitrous oxide emissions from landfills as well as from other environments (e.g., agricultural soils) should consider these issues. Finally, a methanotrophic biofiltration system was designed and modeled for the promotion of methanotrophic activity in local methane "hotspots" such as landfills. Model results as well as economic analyses of these biofilters indicate that the use of methanotrophic biofilters for controlling methane emissions is technically feasible, and provided either the costs of biofilter construction and operation are reduced or the value of CO 2 credits is increased, can also be economically attractive. 3 TABLE OF CONTENTSABSTRACT 2 EXECUTIVE SUMMARY 6

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Kinetics of microbial landfill methane oxidation in biofilters

Cited by 152 publications

References 24 publications

Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation

Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation

Analysis of the effects of temperature, the amount of nutrient solution and the carbon dioxide concentration on methane biofiltration

Strategies to Optimize Microbially-Mediated Mitigation of Greenhouse Gas Emissions from Landfill Cover Soils

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Kinetics of microbial landfill methane oxidation in biofilters

Cited by 152 publications

References 24 publications

Improved quantification of microbial CH&lt;sub&gt;4&lt;/sub&gt; oxidation efficiency in arctic wetland soils using carbon isotope fractionation

Improved quantification of microbial CH&lt;sub&gt;4&lt;/sub&gt; oxidation efficiency in arctic wetland soils using carbon isotope fractionation

Analysis of the effects of temperature, the amount of nutrient solution and the carbon dioxide concentration on methane biofiltration

Strategies to Optimize Microbially-Mediated Mitigation of Greenhouse Gas Emissions from Landfill Cover Soils

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Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation

Improved quantification of microbial CH<sub>4</sub> oxidation efficiency in arctic wetland soils using carbon isotope fractionation