Site specific diel methane emission mechanisms in landfills: A field validated process based on vegetation and climate factors

Xin, Danhui; Hao, Yongxia; Shimaoka, Takayuki; Nakayama, Hirofumi; Chai, Xin‐Sheng

doi:10.1016/j.envpol.2016.07.060

Cited by 24 publications

(13 citation statements)

References 32 publications

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“…A few studies have looked at the impact of wind speed (Poulsen, 2005;Xin et al, 2016), wind direction (Xu et al, 2014) and solar radiation (Xin et al, 2016) on LFG emissions. Poulsen (2005) simulated LFG emissions at a Danish landfill and concluded that wind speed affects LFG emissions especially in winter.…”

Section: Introductionmentioning

confidence: 99%

“…Poulsen (2005) simulated LFG emissions at a Danish landfill and concluded that wind speed affects LFG emissions especially in winter. Xin et al (2016) measured diel CH4 emissions, using flux chambers at a Chinese landfill, and observed that CH4 fluxes were affected highly by solar radiation during daytime and by wind speed at night. Xu et al (2014) measured CH4 emissions from a U.S. landfill, using the eddy covariance method, and found no influence of wind direction on the measured CH4 emissions.…”

Section: Introductionmentioning

confidence: 99%

“…Soil temperature was the most important meteorological parameter affecting recovered LFG composition. Xin et al(2016) Solar radiation, ambient temperature, soil temperature and wind speed…”

Section: Introductionmentioning

confidence: 99%

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Impact of meteorological parameters on extracted landfill gas composition and flow

Aghdam¹,

Scheutz

Kjeldsen

2019

Waste Management

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The objective of this study was to investigate the impact of four pre-selected meteorological parameters (barometric pressure, wind speed, ambient temperature and solar radiation) on recovered landfill gas (LFG) flow, methane (CH) content of the LFG and the recovered CH flow by performing statistical correlation tests and a visual check on correlations in scatterplots. Meteorological parameters were recorded at an on-site weather station, while LFG data were recorded when entering the gas engine. LFG CH concentration, LFG flow and CH flow correlated highly with both barometric pressure and changes in barometric pressure, and the correlations were statistically significant. A higher correlation was observed when studying changes in barometric pressure in comparison to the absolute value of barometric pressure. LFG recovery data correlated highly and significantly with wind speed during winter, but not during summer. Ambient temperature and solar radiation were not major meteorological parameters affecting LFG recovery, as low correlation coefficients were observed between these two parameters and the LFG recovery data.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of meteorological parameters on extracted landfill gas composition and flow

Aghdam¹,

Scheutz

Kjeldsen

2019

Waste Management

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“…Some advective mechanisms may be locally important for gas fluxes (SCHEUTZ et al, 2009). Inductive mechanisms of advective gas movement in the substrate may be: variations in atmospheric pressure (AGHDAM et al, 2019;FJELSTED et al, 2019;XU et al, 2014), temperature (CHRISTOPHERSEN et al, 2001;FENG et al, 2017;PARK;SHIN, 2001;UYANIK et al, 2012), wind velocity in the substrate surface (AGHDAM et al, 2019;XIN et al, 2016), substrate humidity and water percolation (HAN-SON; HANSON, 1996;BOGNER et al, 2008), and differences in substrate density (BIAN et al, 2018b;RACHOR et al, 2011). However, the results presented here show no variation in the fluxes, and no correlation between the variables analyzed and the gas emissions, despite the significant variation in temperature (Table 1).…”

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

confidence: 99%

“…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%

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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Monitoring of methane emission from a landfill site in daily and hourly time scales using an automated gas sampling system

Izumoto

Hamamoto

Kawamoto

et al. 2018

Environ Sci Pollut Res

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Landfill sites are significant sources of methane gas globally. Understanding the temporal variabilities of methane emissions from landfill sites is necessary for estimating such emissions. In this study, an automated monitoring system was used to monitor methane emission flux and concentration on daily and hourly time scales at a landfill site. Measured methane emission fluxes were almost negligible in the studied area. However, methane concentration at landfill surface at nighttime was significantly higher than those in the daytime, which demonstrates the importance of investigating methane emissions at an hourly time scale, including during nighttime. The daily and hourly variations in methane concentration were well correlated with either soil temperature or volumetric water content near the surface. The obtained relations indicate that the automated monitoring system measurements can facilitate a more comprehensive understanding of the methane emission mechanisms at different time scales.

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Site specific diel methane emission mechanisms in landfills: A field validated process based on vegetation and climate factors

Cited by 24 publications

References 32 publications

Impact of meteorological parameters on extracted landfill gas composition and flow

Impact of meteorological parameters on extracted landfill gas composition and flow

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

Monitoring of methane emission from a landfill site in daily and hourly time scales using an automated gas sampling system

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