Modeling the effects of vegetation on methane oxidation and emissions through soil landfill final covers across different climates

Abichou, Tarek; Kormi, Tarek; Yuan, Lei; Johnson, Terry R.; Escobar, Francisco

doi:10.1016/j.wasman.2014.11.002

Cited by 49 publications

(19 citation statements)

References 49 publications

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“…However, no variable was significantly correlated (R 2 < 0.1218) with either CO 2 or CH 4 fluxes. The maximum CH 4 oxidation activity was recorded at 15 to 20% moisture contents (ABICHOU et al, 2015;VISVANATHAN et al, 1999). In our study, 81.25% of the analyzed points had moisture values below 10%.…”

Section: Carbon Dioxide and Methane Fluxes At Different Periods Of Thsupporting

confidence: 46%

“…The advective movement of gases through the substrate can be induced by variations on atmospheric pressure (AGHDAM et al, 2019;FJELSTED et al, 2019;XU et al, 2014), air temperature (ABICHOU et al, 2015;BOWDEN et al, 1998;XU et al, 2014), surface wind speed (AGHDAM et al, 2019;XIN et al, 2016), displacement of the water that infiltrates the substrate (ABICHOU et al, 2009;BAJAR et al, 2017;HANSON;HANSON, 1996;ROSLEV;KING, 1996;WHALEN et al, 1990), and differences in dump compaction KAUSHAL;SHARMA, 2016;RÖWER et al, 2011). CH 4 is less dense than the atmospheric air, and therefore tends to rise, while CO 2 and almost all of the vapors produced by volatile organic liquids are denser than air, tending to sink when released into the gaseous portion of the substrate (SEINFELD; PANDIS, 2006).…”

Section: Carbon Dioxide and Methane Fluxes In Three Locations And At mentioning

confidence: 99%

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Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Pinheiro¹,

Cattânio

Imbiriba³

et al. 2019

Rev. Bras. Ciênc. Ambient. (Online)

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Dumps are important anthropogenic sources of greenhouse gas emissions into the atmosphere, mostly CH 4 . However, few studies on the subject have been carried out in the Amazon region. Several factors affect the production and emission of dumps gases. The objective of this study was to quantify the spatial variation of CO 2 and CH 4 production in an Amazonian dump and seek the relationship between the relative importance of some environmental factors and the gas fluxes. This study was carried out in an open-air dump in the metropolitan region of Belém, where approximately 11.0 million Mg of waste was deposited within 25 years, of which 6.4 million Mg were organic. The CH 4 and CO 2 emission rates from the surface of the dump were determined using the closed dynamic flux chamber technique. The study was conducted in three cells of different ages, sampled in two times between the rainy and the dry season in Amazon. The Aurá dump has an area of 30 ha and emits a total of 51.49 Mg CO 2 ha -1 month -1 and 3.16 Mg CH 4 ha -1 month -1 to the atmosphere. This results in an expressive production of 1,359,961.04 Mg CO 2 -e y -1 , being that 58.54% is due to CH 4 flux. The spatial variability in CO 2 and CH 4 fluxes is very large, especially for CH 4 , forming hotspots of high concentrations. Perhaps for this reason, the flow has not been correlated with micrometeorological variations.

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Section: Carbon Dioxide and Methane Fluxes At Different Periods Of Thsupporting

confidence: 46%

Section: Carbon Dioxide and Methane Fluxes In Three Locations And At mentioning

confidence: 99%

Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Pinheiro¹,

Cattânio

Imbiriba³

et al. 2019

Rev. Bras. Ciênc. Ambient. (Online)

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show abstract

“…Hettiarachchi et al [28] and Hettiarachchi et al [29] did a comprehensive one-dimensional mathematical model that incorporates heat transfer and moisture transport in methane biofilters. Ng et al [18] developed a model that incorporates water, gas and heat coupled reactive transport in unsaturated soil and Abichou et al [30] used a numerical model that combines flow of water and heat with gas transport. Such models provide a practical tool for prediction of net methane conversion and they also allow a sensitivity analysis of the most important parameters.…”

Section: Mamo Modellingmentioning

confidence: 99%

Methane oxidation in a biofilter (Part 1): Development of a mathematical model for designing and optimization

Amodeo

Masi

Hulle

et al. 2015

Journal of Environmental Science and Health, Part A

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The aim of this work is the evaluation of the efficiency of such a biofilter, through the application of a mathematical model which describes the biological oxidation process. This mathematical model is able to predict the efficiency of the system under varying operating conditions. Literature data have been used in order to build the model. The factors that mostly affect the process and which actually regulate the entire process have been highlighted in this work. Specifically, it was found that temperature, flow and methane concentration are the most important parameters that influence the system. The results obtained from the mathematical model showed also that the biofilter system is simple to implement and manage and allows the achievement of high efficiency of methane oxidation. In the optimal conditions for temperature (between 20-30°C), residence time (between 0.7-0.8 h) and methane molar fraction (between 20-25%) the efficiency of methane oxidation could be around 50%.

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“…For example, if the method involves a vegetative layer, the aeration of the soil is increased greatly. This allows oxygen to diffuse more readily into the soil (Abichou, Kormi, Yuan, Johnson, & Francisco, 2015). If toxins such as methane are oxygenated, they are not as detrimental to the environment.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Monitoring Carbon Dioxide and Methane Levels above Retired Landfill and Forest Control Site with a Tethered Aerostat to Determine Remediation Effectiveness

Banick

Zolkowski

Lenz

et al. 2016

Proc. Wisc. Space Conf.

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Modeling the effects of vegetation on methane oxidation and emissions through soil landfill final covers across different climates

Cited by 49 publications

References 49 publications

Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Methane oxidation in a biofilter (Part 1): Development of a mathematical model for designing and optimization

Monitoring Carbon Dioxide and Methane Levels above Retired Landfill and Forest Control Site with a Tethered Aerostat to Determine Remediation Effectiveness

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