A Robust Method for Estimating Landfill Methane Emissions

Figueroa, Veronica; Mackie, Kevin R.; Guarriello, Nick; Cooper, C. David

doi:10.3155/1047-3289.59.8.925

Cited by 26 publications

(18 citation statements)

References 9 publications

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“…The resulting NMOC data are then related to CH4 emissions. The technique also accounts for spatial and temporal variability in emissions, and compared well to concurrent FTIR surveys at a Florida landfill [182].…”

Section: Techniques To Monitor Methane Emissionsmentioning

confidence: 99%

Methane emissions as energy reservoir: Context, scope, causes and mitigation strategies

Chai

Tonjes

Mahajan

2016

Progress in Energy and Combustion Science

105

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A B S T R A C TMethane (CH4) is now considered a bridge fuel between present fossil (carbon) economy and desired renewables and this energy molecule is projected to play an important role in the global energy mix well beyond 2035. The atmospheric warming potential of CH4 is 28-36 times, when averaged over a 100-year period, that of carbon dioxide (CO2) and this necessitates a close scrutiny of global CH4 emissions inventory. As the second most abundant greenhouse gas (GHG), the annual global CH4 emissions were 645 million metric tons (MMT), accounting for 14.3% of the global anthropogenic GHG emissions. Of this, five key anthropogenic sources: agriculture, coal, landfills, oil and gas operations and wastewater together emitted 68% of all CH4 emissions. Landfills are ranked as the third highest anthropogenic CH4 emission source, behind agriculture and coal mines, and emissions from the waste sector are expected to reach almost 800 million metric tons CO2 equivalent (MMTCO2e) in 2015.The two largest economies spewed out 42% (14% (US) and 28% (China)) of the world's total greenhouse gas (GHG) emissions; these two countries are also the largest producers of municipal solid waste (MSW). The United States averages 250 MMT of MSW annually, of which about 63% enters landfills. In 2015, there were 2434 landfills in the United States and CH4 from these landfills accounted for 138 MMTCO2e released into the atmosphere and represents 17.7% of all US CH4 emissions. China had 580 landfills and treated 105 MMT of MSW in 2013. Methane produced from landfills contributes about 13% of total CH4 emissions in China. Almost 50% of landfills in China did not install efficient LFG collection and utilization systems to make them manageable so a great deal of CH4 and CO2 are emitted without intervention. Recent data show that globally, 45 billion cubic meters (bcm) of CH4 or 282 million barrels of oil equivalent (boe) was annually released from landfills into the atmosphere. Managing methane emission from landfills is a global challenge, though China lags behind in managed landfills that contribute to adverse health effects on the population. Moreover, the rich organic content of MSW in China indicates that CH4 emissions there may be underestimated. The China unmanaged landfill scenario is further duplicated in developing as well as in least-developed countries.This review starts with a dialog on CH4 emissions and climate change and the chemical changes the CH4 molecule undergoes in the atmosphere (Section 1). Section 2 deals with identification of global CH4 emissions from key sources, particularly anthropogenic, among those are agriculture, coal mines, landfills, oil and gas operations and wastewater. Although each of these sources is descriptive on their own, the focus of Section 3 is on landfills with particular emphasis on the United States and China, two largest producers of waste. The quantitative measurement of CH4 emissions is still uncertain so Section 4 is devoted to various CH4 estimation models, such as United States Environm...

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Section: Techniques To Monitor Methane Emissionsmentioning

confidence: 99%

Methane emissions as energy reservoir: Context, scope, causes and mitigation strategies

Chai

Tonjes

Mahajan

2016

Progress in Energy and Combustion Science

105

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“…Os aterros sanitários constituem importante fonte de emissões antrópicas de gases do efeito estufa (GEE) (BOGNER et al, 2008), especialmente o metano (CH 4 ) (ISHIGAKI et al, 2005;FIGUEROA et al, 2009;KORMI et al, 2017), que apresenta potencial de aquecimento global 20 vezes maior que o dióxido de carbono (CO 2 ) (SOLOMON et al, 2007). Estima-se que, entre os anos de 2010 e 2030, 13% das emissões antropogênicas globais de CH 4 serão provenientes de aterros sanitários (USEPA, 2014).…”

Section: Introductionunclassified

Emissões fugitivas de biogás em camada de cobertura de solo compactado em aterro sanitário

Moreira

Guedes

Monteiro

et al. 2020

Eng. Sanit. Ambient.

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RESUMO As emissões fugitivas de biogás podem representar parcela significativa do fluxo de gases em aterros sanitários, inviabilizar o aproveitamento energético do metano (CH4), além de oferecer riscos à saúde ambiental das comunidades circunvizinhas ao empreendimento. Nesse contexto, este trabalho teve por objetivo avaliar as emissões fugitivas e os fatores que interferem no fluxo de biogás em camada de cobertura final (liner) de aterro sanitário. A área de estudo consistiu em uma célula de resíduos, com massa de 62.359,44 t de resíduos sólidos urbanos (RSU) depositados, no aterro sanitário de Campina Grande, Paraíba, Brasil. Nessa célula, foram realizadas medições das emissões fugitivas de biogás, por meio da metodologia de placa de fluxo estática, análises das concentrações de gases na interface solo-resíduo, utilizando dispositivos de medição de concentração de gases (DMC) e mapeamentos das emissões de gases na célula de resíduos, aplicando técnicas de interpolação de dados baseada na Krigagem. Foram verificados fluxos de CH4 e dióxido de carbono (CO2) variando de 0 a 0,09 e 24,62 a 331,31 g.m-2.dia-1, respectivamente. O percentual de retenção do CH4 e do CO2 pela liner foi elevado, acima de 95%, sendo influenciado principalmente pelo elevado grau de compactação (GC) médio obtido para a célula (91,84%) e pela eficiência do sistema de drenagem de gases. O mapeamento das emissões de biogás na célula de resíduos mostrou-se uma ferramenta importante na identificação das áreas com maior potencial de geração e de fluxo de biogás pela camada de cobertura.

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“…Unmanaged MSW pollutes the soil, water and atmosphere, which may have adverse impacts on public health [1][2][3][4]. On the other hand, MSW management activities such as composting, combustion and landfills release greenhouse gases such as methane, nitrous oxide and carbon dioxide to the atmosphere [5][6][7]. In addition, unmanaged waste could clog the drainage system, which would in turn contribute to flooding and water logging in urban areas during the rainy season [8,9].…”

Section: Introductionmentioning

confidence: 99%

Improving Municipal Solid Waste Collection Services in Developing Countries: A Case of Bharatpur Metropolitan City, Nepal

Kumar

Nepal

Khadayat³

et al. 2019

Sustainability

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Municipal solid waste management is one of the major challenges that cities in developing countries are facing. Although waste collection services are critical to build a smart city, the focus of both scholarship and action/activism has been more on the utilization of waste than on collection. We devised a choice experiment to elicit the preferences of municipal residents with regard to the various attributes of solid waste collection services in the Bharatpur Metropolitan City of Nepal. The study showed that households identify waste collection frequency, timing of door-to-door waste collection services, and cleanliness of the streets as the critical elements of municipal waste collection that affect their welfare and willingness to pay. While almost all households (95%) were participating in the waste collection service in the study area, more than half (53%) expressed dissatisfaction with the existing service. Women were the main actors engaged in waste collection and disposal at household level. The results of the choice analysis suggest that households prefer a designated waste collection time with waste collection bins placed at regular intervals on the streets for use by pedestrians who often throw garbage on the streets in the absence of bins. For these improvements, households were willing to pay an additional service fee of 10–28% on top of what they were already paying. The study also finds that municipal waste collection can be improved through the involvement of Tole Lane Committees in designing the timing and frequency of the service and by introducing a system of progressive tariffs based on the number of storeys per house.

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A Robust Method for Estimating Landfill Methane Emissions

Cited by 26 publications

References 9 publications

Methane emissions as energy reservoir: Context, scope, causes and mitigation strategies

Methane emissions as energy reservoir: Context, scope, causes and mitigation strategies

Emissões fugitivas de biogás em camada de cobertura de solo compactado em aterro sanitário

Improving Municipal Solid Waste Collection Services in Developing Countries: A Case of Bharatpur Metropolitan City, Nepal

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