Characterizing a Brazilian sanitary landfill using geophysical seismic techniques

Abreu, Ana Elisa Silva de; Gandolfo, Otávio Coaracy Brasil; Vilar, Orêncio Monje

doi:10.1016/j.wasman.2016.03.048

Cited by 27 publications

(21 citation statements)

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“…It can be seen that there are practically no actions aimed at reducing waste production, such as initiatives to change people consumption patterns, or information about the life-cycle impacts and the costs of the use of resources (Brazil, 2010;EC, 2011;Godecke et al, 2013). This information gap is translated into inadequate management of the MSW, and results in mixed residues, deposited in landfills or even in dumps (Abreu et al, 2016;Figueiredo, 2012). Another complicating element in the management of MSW in peripheral countries is the scarcity of economic resources, appropriate technologies and skilled labor to treat solid waste (Andrade and Ferreira, 2011).…”

Section: Introductionmentioning

confidence: 99%

Municipal Solid Waste in Goiás (Brazil): Current Scenario and Projections for the Future

2017

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The production of municipal solid waste (MSW) has increased annually worldwide. This situation can be verified in the municipalities of Brazil, that produce more MSW and have difficulty in managing their waste resulting in harmful consequences for the environment and ecosystems. For instance, in the State of Goiás, most of the produced MSW are sent to dumps. In this context, the goal of this study was to create a projection for the amount of MSW that will be generated in each of the 246 municipalities of Goiás by 2040. To do so, a population projection from 2015 to 2040 was done, alongside its correspondent MSW production and identification of the current MSW managing systems in the State. Results show that, by 2040, Goiás will have more than 8.7 million inhabitants, 32% more than 2015. However, 88% of the municipalities will continue to have less than 50 thousand inhabitants. The municipalities of bigger dimension, on the other hand, will be concentrated mainly in the Goiânia Metropolitan area and surroundings of the Federal District regions. In terms of MSW production, an increase of about 35% in waste generation is estimated for 2040 when compared to 2015. In 2040, the Goiânia Metropolitan, surroundings of the Federal District and the Southwest regions of Goiás will produce 70% of the State MSW. Regarding the produced MSW technological routes, in 2015 about 70% of the State waste went to either unlicensed landfills or dumps, while 8% did not even get collected, having ended up in wastelands or waterways. Considering this panorama in Goiás, what will be the management of MSW in 2040 if nothing is done?

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Section: Introductionmentioning

confidence: 99%

Municipal Solid Waste in Goiás (Brazil): Current Scenario and Projections for the Future

2017

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“…Um exemplo é o estudo de Abreu et al (2016) Uma das finalidades de caracterizar Vp dentro de aterros sanitários ou lixões é para delimitar a área de RSU em lugares onde não se tem conhecimento dos limites e profundidades dele (como lixões antigos). Esse é o caso do estudo de Wongpornchai et al ( 2009), que fazem uma tomografia sísmica de refração para delimitar um lixão.…”

Section: Velocidades De Ondas Elásticas Em Aterros Sanitáriosunclassified

“…Os valores de velocidade de onda P encontrados com tomografia sísmica de refração, mostram uma grande faixa de velocidades se comparada com as obtidas com outros métodos (Figura 5.16), como por exemplo o caso do estudo de Wongpornchai et al (2009) no aterro abandonado no distrito Mae-Hia na Thailandia e a célula experimental (usando o metodo de tomografia sísmica de refração). Entretanto, podemos ver que a faixa de velocidades obtida com crosshole por Abreu et al (2016) no aterro sanitário de São Carlos é menor do que a obtida com sísmica de refração mas se encontra dentro das faixas de velocidades obtidas por Wongpornchai et al (2009) e na célula experimental (usando o metodo de tomografia sísmica de refração) concordando com esses estudos.…”

Section: Velocidades De Onda Compressiva Vpunclassified

“…O perfil de velocidades da célula experimental calculado com o método crosshole, está dentro das faixas de velocidades obtidas por Abreu et al (2016) e com tomografia sísmica na célula experimental. Os valores obtidos na camada de residuos no lisímetro, também concordam com os valores reportados por Abreu et al (2016) e dentro da faixa de velocidades obtida com tomografia sísmica na célula experimental.…”

Section: Velocidades De Onda Compressiva Vpunclassified

“…Porém, os resultados de velocidades Vs para a célula experimental com o método crosshole concordam com Abreu et al (2016) e Abreu (2015), os quais usaram os métodos crosshole e MASW 134 respectivamente no aterro sanitario de São Carlos. Se observa também que de forma similar ao obtido nesse estudo, as velocidades reportadas usando o método crosshole, são maiores do que as adquiridas usando o método MASW no estudo do aterro sanitario de São Carlos desenvolvido porAbreu et al (2016) e(Abreu, 2015).…”

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Estudo de parâmetros geomecânicos de uma célula experimental de resíduos sólidos urbanos com métodos geofísicos

Camacho¹

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The sanitary landfills in Brazil have a high organic content (around 50%), a variety of mixed wastes, and low compaction energy. These characteristics are unusual in the well-studied landfills of developed countries. Improper landfill characterization may lead to groundwater contamination and slope instability. Therefore, it is crucial to understand the behaviour and physical properties of poorly characterized landfills to prevent environmental risks in Brazil. A geophysical survey was performed on the municipal solid waste (MSW) in an experimental cell and a lysimeter located in the city of Campinas, State of São Paulo. Geophysical methods such as seismic refraction, active and passive multichannel analysis of surface waves, crosshole test, electro resistivity and induced polarization were used to estimate physical and elastic parameters of the solid waste. The resulting estimates were unit weight, moisture content, shear modulus, Poisson's ratio, elastic modulus, and the elastic wave velocities. The compressive wave velocity (Vp) and the shear wave velocity (Vs) were used to characterize and derive the dynamic and elastic properties of the MSW, used to generate a stability analysis. The crosshole test showed that the Vp ranged from 217 to 252 m/s and the Vs ranged from 86 to 89 m/s. These low Vp and Vs values were attributed to the high content of organic material (53 %), low compaction energy, and climatic conditions such as high pluviometry index and high temperatures. All these variables directly affect the pore fluid saturation, effective stress, and pore pressure. The low velocities estimated at the MSW were consistent with values reported in the literature and landfills located in countries with analogous socioeconomic and climatic conditions. Two boreholes in the experimental cell were used to perform an electrical resistivity test and a moisture analysis. The direct correlation between the electrical resistivity results and the volumetric moisture content was estimated using Archie´s law. The calculated Archie's law parameters allowed the estimation of the tomography moisture content from the resistivity tomography. The joint analysis of moisture content, resistivity tomography, induced polarization and water balance in the experimental cell made possible to understand the humidity variation within the cell over time due to climatic conditions.

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Laboratory-based assessment on similarities between dynamic behavior of MSW and clay

Alidoust

Kargar

Goodarzi

et al. 2021

J Mater Cycles Waste Manag

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Characterizing a Brazilian sanitary landfill using geophysical seismic techniques

Cited by 27 publications

References 13 publications

Municipal Solid Waste in Goiás (Brazil): Current Scenario and Projections for the Future

Municipal Solid Waste in Goiás (Brazil): Current Scenario and Projections for the Future

Estudo de parâmetros geomecânicos de uma célula experimental de resíduos sólidos urbanos com métodos geofísicos

Laboratory-based assessment on similarities between dynamic behavior of MSW and clay

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