Some findings on the spatial and temporal distribution of methane emissions in landfills

Delgado, Mónica; López, Armando; Esteban, Ana Lorena; Lobo, Amaya

doi:10.1016/j.jclepro.2022.132334

Cited by 16 publications

(7 citation statements)

References 20 publications

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“…The correlation between meteorological parameters (precipitation, atmospheric pressure, wind speed, and temperature) and LFG concentration was studied by Delgado et al [84]. In this study, during landfill operation, a statistically significant correlation was present between the average wind speed and other gases (0.33).…”

Section: Discussion Of the Resultsmentioning

confidence: 57%

Evaluation of the Activity of a Municipal Waste Landfill Site in the Operational and Non-Operational Sectors Based on Landfill Gas Productivity

Przydatek,

Generowicz,

Kanownik

2024

Energies

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This research identifies the productivity of landfill gas actively captured at a municipal waste landfill site with a waste mass exceeding 1 million Mg from sectors in the operational and non-operational phases, considering meteorological conditions. Based on the analysis of landfill gas, including emissions and composition (CH4, CO2, O2, and other gases), the processes occurring demonstrate the impact of the decomposition of deposited waste on the activity of the deposit. With average monthly gas emissions exceeding 960,000 m3, the average content of CH4 (30–63%) and CO2 (18–42%) and the varied content of O2 (0.3–9.8%) in individual sectors of the landfill site were significant. The statistically significant relationship between CH4, CO2, and landfill gas emissions exhibited a noticeable decrease in methane content. Despite the abandonment of waste storage, a high correlation is present between the emission level and methane content (0.59) and carbon dioxide (0.50). In the operational part of the landfill, this relationship is also statistically significant but to a lesser extent; Spearman’s R-value was 0.42 for methane and 0.36 for carbon dioxide. The operational and post-operational phases of the municipal waste landfill demonstrated a noticeable impact from the amount of precipitation, relative humidity, and air temperature, on landfill gas productivity. The generally progressive decline in the activity of the waste deposit, which reflects a decreasing trend in the methane content of approximately 2% annually in the total composition of landfill gas, as well as the share below 50%, indicates the need only to utilise landfill without producing energy.

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Section: Discussion Of the Resultsmentioning

confidence: 57%

Evaluation of the Activity of a Municipal Waste Landfill Site in the Operational and Non-Operational Sectors Based on Landfill Gas Productivity

Przydatek,

Generowicz,

Kanownik

2024

Energies

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“…In terms of the technical aspect, the number of landfills as potential sources of biogas production is decreasing; within the analogous period of time, the number of landfills equipped with degassing installations decreased from 428 to 249 [30]. When estimating the potential of biogas that can be obtained from landfills, the productivity of the waste deposit should be taken into account, which will be different depending on the morphology of the stored waste and its compression [31,32]. Based on the age of the landfills, the current methanogenic activity and the amount of biogas currently obtained, the potential of available landfill biogas was estimated to be around 276.24 million m 3 .…”

Section: Landfill Biogasmentioning

confidence: 99%

“…The potential of the remaining biogas produced from waste from the food industry was estimated on the basis of statistical data [19,27,30], literature [31,32,37] and reports [25]. For the estimation, we adopted waste that was not transferred to agricultural biogas plants but was used directly on the premises of the producer, i.e., at slaughterhouses, breweries and in other food industries.…”

Section: Other Biogasmentioning

confidence: 99%

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Balance and Energy Use of Biogas in Poland: Prospects and Directions of Development for the Circular Economy

Ciuła

Wiewiórska²,

Banaś

et al. 2023

Energies

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The production of biogas from biodegradable waste generated in all sectors of the economy in Poland is a key issue for the diversification of energy sources and climate neutrality. The biogas balances presented in the literature based on bio-waste often contain overly optimistic data, which in reality only represent the theoretical potential of biogas in Poland. The pragmatic approach presented in this study fills a gap in research by presenting a technical balance of biogas (real potential) that can be realistically achieved. The objective of the work was to perform a biogas balance in the context of electricity and heat generation in cogeneration units. The tests made it possible to estimate the technical potential of biogas, depending on the source of its generation, the possibility of its conversion to biomethane and biohydrogen and the methods of its use. The research results showed a 30% increase in biogas potential on an annual basis compared to the current state, resulting in a 29% increase in electricity production and a 28% increase in heat production. The technical potential of biogas was estimated at 2186.62 million m3, which would allow for the production of 4627.06 GWh of electricity and 1869.64 TG of heat. The technical balance of biogas and the potential energy production can serve as input material for developing plans and strategies for the development of renewable energy sources in Poland. The work is consistent with the issues of balancing the renewable energy resources from biogas and the methods of conversion into other energy carriers using sustainable energy transformations in order to optimise energy production processes.

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“…Meanwhile, the previous studies showed a negative relationship between CH 4 emission and barometric pressure (barometric pumping) and significant emissions reported with high temperatures and moisture (Sankoh et al., 2013; Xu et al., 2014). Thus, many previous studies reported the annual fluctuations of landfill gas emissions with climatic factors variations (Delgado et al., 2022; Duan et al., 2014; Kissas et al., 2022; Liu et al., 2023).…”

Section: Introductionmentioning

confidence: 99%

Annual fluctuation of gas concentration within the landfill surface layer in a tropical climate: A case study of a municipal wasteyard

Herath,

Buddhima,

Gunathilake

et al. 2023

Environmental Quality Mgmt

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This study looks at the annual variations in landfill gas concentrations within the surface layer of the dump as well as the effect of climatic factors on these variations under the tropical climate. The experiment was carried out at part of the Karadiyana landfill, Sri Lanka, containing old mixed municipal solid waste covered by vegetation. The gas concentrations of the landfill surface layer were measured from three gas wells established on the dump surface layer, which contains 2.5 m depth, throughout the year with the measuring of climatic factors. The results show the annual fluctuation of temperature, cumulative rainfall, relative humidity, and atmospheric pressure were 27–42°C, 66.7–357.7 mm, 24.7%–78.2%, and 999.5–1014 mbar around the studied landfill area, and the average concentration value of the CH4, NH3, H2S, and VOCs gases were 18.94 ± 11.49%, 15.48 ± 15.17 mg m−3, 15.06 ± 19.02 mg m−3, and 0.83 ± 0.99 mg m−3, respectively. The rainfall and atmospheric temperature were significant metrological factors influencing the surface layer gas concentrations and showed a significant positive correlation with cumulative rainfall and a negative correlation with atmospheric temperature. The relative humidity shows a moderate positive correlation, and there was no evidence of a considerable impact of atmospheric pressure on the surface layer concentrations. Annual fluctuation is a critical factor for landfill gas emission quantification, and surface layer concentration variation can be used to study the emission fluctuation by considering their relationship.

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Some findings on the spatial and temporal distribution of methane emissions in landfills

Cited by 16 publications

References 20 publications

Evaluation of the Activity of a Municipal Waste Landfill Site in the Operational and Non-Operational Sectors Based on Landfill Gas Productivity

Evaluation of the Activity of a Municipal Waste Landfill Site in the Operational and Non-Operational Sectors Based on Landfill Gas Productivity

Balance and Energy Use of Biogas in Poland: Prospects and Directions of Development for the Circular Economy

Annual fluctuation of gas concentration within the landfill surface layer in a tropical climate: A case study of a municipal wasteyard

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