Assessment of Methane Flux from Municipal Solid Waste (MSW) Landfill Areas of Delhi, India

Rawat, Manju; Ramanathan, Al.

doi:10.4236/jep.2011.24045

Cited by 29 publications

(14 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biogas generation rate depends on several factors (Bicheldey and Latushkina 2010;Rawat and Ramanathan 2011;Behera et al 2010;Machado et al 2009), such as waste composition and density, water availability and others site-specific conditions (e.g., temperature, pH, nutrients). In this work, gas generation is assessed using the simple anaerobic model proposed by Tchobanoglous et al (1993).…”

Section: Biotic Consumption and Vapor Lossesmentioning

confidence: 99%

A new screening model for leachate production assessment at landfill sites

Pantini

Verginelli

Lombardi

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

This paper presents an alternative water balance model for predicting leachate production in landfills, from the operative to the post-closure management. The developed model, based on analytical and empirical equations, provides a quantitative estimation of leachate volumes, using a water balance approach which accounts for the different rates of the incoming water, water losses and water consumption. Aging and compression are also included, allowing to assess the progressive variation of hydraulic and physical properties of deposited wastes. In this work, after a brief description of the model architecture, different applications to hypothetical scenarios and to a real landfill are presented. Namely, in order to highlight how aging and biodegradation can influence the expected leachate production, the results of the developed model are also compared with those provided by the Hydrologic Evaluation of Landfill Performance model which neglects both these processes. The obtained results showed that wastes compression may affect leachate prediction in a large extent during operative stage of a landfill, and neglecting these processes could lead to underestimation up to one order of magnitude. Also biodegradation of waste organic matter may result relevant for leachate volumes assessment, influencing water storage capacity of wastes and leading to a leachate production 2-3 times greater than those obtained neglecting these phenomena. Finally, the application of the developed model to the real landfill shows a quite good agreement with the field data, whereas the Hydrologic Evaluation of Landfill Performance model tends to underestimate the leachate volumes with errors up to 80 %.

show abstract

Section: Biotic Consumption and Vapor Lossesmentioning

confidence: 99%

A new screening model for leachate production assessment at landfill sites

Pantini

Verginelli

Lombardi

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In India, MSW "generation" data were said to be 6 MT in 1947, and 48 MT in 1997 [131], with 0.5-0.7 kg person −1 d −1 generated in urban areas [132]. These data most probably refer to the amount of managed MSW; data from Rathje's work with Mexico City households in the 1980s suggest less developed countries generate approximately the same amount of MSW as developed countries (2-3 kg HH −1 d −1 ), although the composition is very different [133], and it is clear many developing countries do not have any organized means to manage the generated wastes.…”

Section: Other Key Countries Landfill 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

View full text Add to dashboard Cite

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...

show abstract

“…Due to scarcity of land in big cities, municipal authorities are using same landfill for nearly 10 -20 years. Thus, the possibility of anaerobic digestion of MSW and emission of greenhouse gas (GHGs) further increase (Rawat and Ramanathan, 2011).…”

Section: Introductionmentioning

confidence: 99%

Molecular detection of Methylotrophs from an Indian landfill site and their potential for biofuel production

2017

Global NEST Journal

View full text Add to dashboard Cite

Emission of CH4 from landfills is a major cause of concern as CH4 is twenty four times more potent than CO2, as a greenhouse gas. However, landfills also harbor a group of bacteria called methanotrophs, which can oxidize CH4. They can be used for in situ bioremediation to reduce methane emissions. They can also be used for production of methanol or renewable diesel, utilizing methane in natural gas or biogas. Methanotrophs are a subgroup of methylotrophs. We used molecular techniques for detection of methylotrophs in samples from a landfill in New Delhi. We could detect five methylotrophs. Isolation and efficiency in methanotrophy of these bacteria is undergoing now.

show abstract

Assessment of Methane Flux from Municipal Solid Waste (MSW) Landfill Areas of Delhi, India

Abstract: ABSTRACT

Cited by 29 publications

References 53 publications

A new screening model for leachate production assessment at landfill sites

A new screening model for leachate production assessment at landfill sites

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

Molecular detection of Methylotrophs from an Indian landfill site and their potential for biofuel production

Contact Info

Product

Resources

About