Performance of green waste biocovers for enhancing methane oxidation

Mei, Changgen; Yazdani, Ramin; Han, Bing; Mostafid, M. Erfan; Chanton, Jeffrey P.; VanderGheynst, Jean S.; Imhoff, Paul T.

doi:10.1016/j.wasman.2015.01.042

Cited by 21 publications

(10 citation statements)

References 44 publications

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“…Other studies have also seen CH4 generation in cover soils or biocover materials (e.g. Barlaz et al, 2004;Bogner et al, 2011;Haubrichs and Widmann, 2006;Mei et al, 2015;Scheutz et al, 2009b). Anaerobic conditions in the filter were most likely caused by the thick (∼1.2 m) compost layer.…”

Section: Methane Oxidation Processesmentioning

confidence: 88%

Biofiltration of diluted landfill gas in an active loaded open-bed compost filter

Fjelsted

Scheutz

Christensen³

et al. 2020

Waste Management

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Section: Methane Oxidation Processesmentioning

confidence: 88%

Biofiltration of diluted landfill gas in an active loaded open-bed compost filter

Fjelsted

Scheutz

Christensen³

et al. 2020

Waste Management

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“…Yamini and Reddy [52], as well as Scheutz et al [18], have stated that it is difficult to quantify landfill fugitive methane emissions due to the high temporal variability and spatial heterogeneity of emissions, leading to this being one of largest sources for errors and uncertainties in biocover research. To reduce the uncertainties in research, various materials and mixtures with relatively uniform compositions have been used for biocovers-e.g., compost made of sewage sludge [53], biowaste [41,42,45,[54][55][56], or green waste [57,58], as well as the fine fraction (FF) from the Mechanical-Biological Treatment (MBT) of municipal waste [47,59,60] [60]. Waste-based biocover materials are made of aged and stabilized refuse, and their properties are similar to those of humus soil [61].…”

Section: Biocoversmentioning

confidence: 99%

Field Study on the Efficiency of a Methane Degradation Layer Composed of Fine Fraction Soil from Landfill Mining

et al. 2020

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The main components of landfill gas are methane and carbon dioxide. Emissions of methane, a strong greenhouse gas, can be minimized by in situ oxidation in the bioactive cover layer. Typically, organic-rich porous materials such as compost are used for this process. In this study, the material for a biocover was obtained from the same landfill by landfill mining. The objective was to study the spatial distribution of gases and the efficiency of methane degradation in the biocover. The methane and carbon dioxide emissions were measured at 29 measuring points six times on the surface and once at a depth of 0.5 m. The highest values of both gases from the surface were recorded in July 2015: 1.0% for CO2 and 2.1% for CH4. Deeper in the cover layer, higher values of methane concentration were recorded. The results showed that (a) methane from the waste deposit was entering the biocover, (b) the migration of methane to the atmosphere was low, (c) fluctuations in the composition of gases are seasonal, and (d) the trend in the concentration of CH4 over time was an overall decrease. The described cover design reduces the CH4 emissions in landfills using elements of circular economy—instead of wasting natural soils and synthetic liners for the construction of the final cover layer, functional waste-derived materials can be used.

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“…In our study, 81.25% of the analyzed points had moisture values below 10%. Thus, CH 4 fluxes were expected to be larger than CO 2 fluxes (HANSON; HANSON, 1996;MEI et al, 2015), suggesting that CH 4 oxidation in depth is occurring (BIAN et al, 2018a;FJELSTED et al, 2019). Spatial variation in substrate permeability, air porosity, methane concentration in substrate gas and humidity content affect CH 4 emission rates (SPOKAS et al, 2003).…”

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

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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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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Performance of green waste biocovers for enhancing methane oxidation

Cited by 21 publications

References 44 publications

Biofiltration of diluted landfill gas in an active loaded open-bed compost filter

Biofiltration of diluted landfill gas in an active loaded open-bed compost filter

Field Study on the Efficiency of a Methane Degradation Layer Composed of Fine Fraction Soil from Landfill Mining

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

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