Effective monitoring of landfills: flux measurements and thermography enhance efficiency and reduce environmental impact

Battaglini, Raffaele; Raco, Brunella; Scozzari, Andrea

doi:10.1088/1742-2132/10/6/064002

Cited by 18 publications

(19 citation statements)

References 49 publications

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“…Alternative techniques such as the mobile tracer dispersion method can be used to quantify total methane emissions from landfills [2,3], but no information about specific emission spots is provided. In recent years, infrared (IR) thermography has been employed as a screening tool of hotspots potentially associated with biogas emission; some examples of applications in landfills through handheld IR images are provided in [1,4,5].…”

Section: Introductionmentioning

confidence: 99%

A UAV-Based Thermal-Imaging Approach for the Monitoring of Urban Landfills

et al. 2020

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The monitoring of waste disposal sites is important in order to minimize leakages of biogas, produced by anaerobic digestion and potentially explosive and detrimental to the environment. In this research, thermal imaging from unmanned aerial vehicles (UAVs) has been proposed as a diagnostic tool to monitor urban landfills. Since the anaerobic decomposition produces heat along with biogas, thermal anomalies recorded over the soil are likely to be associated with local biogas escaping from the landfill terrain and leaving a local thermal print. A simple and novel approach, based only on the processing of thermal maps gathered by the remote sensing surveys, has been proposed for the estimation of the fugitive methane emissions from landfills. Two case studies, concerning two Italian landfills, have been presented. For one of them (Mount Scarpino, Genoa), significant thermal anomalies were identified during several UAV flights and the relevant thermal images processed to obtain a rough estimation of the associated methane leakages. For the second landfill (Scala Erre, Sassari), the thermal map did not reveal any anomaly attributable to local biogas emission. Despite some limitations outlined in the paper, the present approach is proposed as an innovative method to identify significant biogas leakages from an urban landfill and to provide a preliminary evaluation of the methane production potential.

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Section: Introductionmentioning

confidence: 99%

A UAV-Based Thermal-Imaging Approach for the Monitoring of Urban Landfills

et al. 2020

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“…Only few studies have tested thermography as a screening tool for LFG emission hotspots, and with varying findings (see Table 1 for an overview). Some studies have reported limited relations between LFG emissions and surface temperatures (Battaglini et al, 2013;Desideri et al, 2007;Lewis et al, 2003;Raco et al, 2005), while others have found the opposite (Capodici et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of a landfill methane emission screening method using an unmanned aerial vehicle mounted thermal infrared camera – A field study

Fjelsted

Christensen²,

Larsen³

et al. 2019

Waste Management

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An unmanned aerial vehicle (UAV)-mounted thermal infrared (TIR) camera's ability to delineate landfill gas (LFG) emission hotspots was evaluated in a field test at two Danish landfills (Hedeland landfill and Audebo landfill). At both sites, a test area of 100 m was established and divided into about 100 measuring points. The relationship between LFG emissions and soil surface temperatures were investigated through four to five measuring campaigns, in order to cover different atmospheric conditions along with increasing, decreasing and stable barometric pressure. For each measuring campaign, a TIR image of the test area was obtained followed by the measurement of methane (CH) and carbon dioxide (CO) emissions at each measuring point, using a static flux chamber. At the same time, soil temperatures measured on the surface, at 5 cm and 10 cm depths, were registered. At the Hedeland landfill, no relationship was found between LFG emissions and surface temperatures. In addition, CH emissions were very limited, on average 0.92-4.52 g CH m d, and only measureable on the two days with decreasing barometric pressure. TIR images from Hedeland did not show any significant temperature differences in the test area. At the Audebo landfill, an area with slightly higher surface temperatures was found in the TIR images, and the same pattern with slightly higher temperatures was found at a depth of 10 cm. The main LFG emissions were found in the area with the higher surface temperatures. LFG emissions at Audebo were influenced significantly by changes in barometric pressure, and the average CH emissions varied between 111 g m d and 314 g m d, depending on whether the barometric pressure gradient had increased or decreased, respectively. The temperature differences observed in the TIR images from both landfills were limited to between 0.7 °C and 1.2 °C. The minimum observable CH emission for the TIR camera to identify an emission hotspot was 150 g CH m d from an area of more than 1 m.

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“…A técnica baseada na aplicação de laser permite a realização das medições de concentrações de metano com grandes alcances, sendo necessário o uso de veículos com equipamentos de apoio (Scheutz et al, 2011;Battaglini;Raco;Scozzari, 2013;Monster et al, 2014;Gallego et al, 2014;Park;Kang;Lee, 2016).…”

Section: Introductionunclassified

Emissões fugitivas de metano em aterros sanitários

Candiani

Viana

2018

GEOUSP (Online)

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A quantidade de metano emitida dos aterros sanitários à atmosfera é controlada pelo tipo de camada de cobertura sobre o aterro. As medições da emissão de metano foram realizadas utilizando o método da placa de fluxo, e o objetivo deste estudo foi estimar as emissões de metano a partir da superfície do aterro sanitário. Os resultados mostram que as emissões fugitivas de metano na atmosfera são de 18,66 g/m2/dia a 149,86 g/m2/dia, representando 31,4% da produção total de metano no aterro sanitário. A eficiência de captação de gás no aterro foi de 68,6%. A emissão fugitiva é o resultado da ineficiência do sistema de captação de gás no aterro sanitário.

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Effective monitoring of landfills: flux measurements and thermography enhance efficiency and reduce environmental impact

Cited by 18 publications

References 49 publications

A UAV-Based Thermal-Imaging Approach for the Monitoring of Urban Landfills

A UAV-Based Thermal-Imaging Approach for the Monitoring of Urban Landfills

Assessment of a landfill methane emission screening method using an unmanned aerial vehicle mounted thermal infrared camera – A field study

Emissões fugitivas de metano em aterros sanitários

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