The electric energy potential of landfill biogas in Brazil

Barros, Regina Mambeli; Filho, Geraldo Lúcio Tiago; Silva, Tiago Rodrigo da

doi:10.1016/j.enpol.2013.10.028

Cited by 93 publications

(27 citation statements)

References 19 publications

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“…Therefore, different types of waste management strategies have been evolved for the management of waste. Landfilling is a predominant method adopted for waste disposal and its operation may controlled or uncontrolled in different countries (12)(13)(14). Aesthetic challenges, groundwater contamination, and air pollution are known to be associated with landfilling; leachate and biogas are the main products of anaerobic degradation of organic matters in a landfill (15).…”

Section: Countries Experiencing This Challenge Do Not Have Anymentioning

confidence: 99%

Evaluation of landfill gas plant siting problem: a multi-criteria approach

Ighravwe

Babatunde

2019

Environ Health Eng Manag

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Background: Landfill activities have environmental and economic values to a community. While the former deals with the control of landfill gas (LFG) emission into the atmosphere, the latter deals with the conversion of LFG to clean energy and subsequently, wealth creation. To fully harness these benefits, LFG plants must be well sited in a community, and this can be achieved when proper techno-economic analysis has been carried out. This will not only justify the LFG plants investment cost, but it will also guarantee their sustainability. Methods: This study presented a framework that ranks and selects LFG project for a community. First, numerical expressions were used to evaluate the techno-economic and environmental requirements of the project sites, then, the importance of these requirements was determined using Criteria Importance Through Inter-criteria Correlation (CRITIC) method. The sites were ranked using grey relational analysis (GRA) and Weighted Aggregated Sum-Product Assessment (WASPAS) method. An illustrative example of the proposed framework was presented using real-world dataset from different communities in Nigeria. Finally, four LFG project sites were ranked using four environmental criteria, five technical criteria, and eight economic criteria. Results: The results of WASPAS were verified by comparing them with the results of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and axiomatic design (AD) methods. It was observed that the results of both methods were the same for the different LFG sites. Conclusion: According to the results, it is obvious that this study will be useful to policy-makers and investors in LFG business, while the former could seek for plants’ sustainability, the latter interest will be on the payback period of their investment.

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Section: Countries Experiencing This Challenge Do Not Have Anymentioning

confidence: 99%

Evaluation of landfill gas plant siting problem: a multi-criteria approach

Ighravwe

Babatunde

2019

Environ Health Eng Manag

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“…Taking into consideration the estimated ERP, each technology was financially evaluated by calculating some indicators such as internal rate of return (IRR) and levelized cost of electricity (LCOE). For this purpose, a 6.8% discount rate was used, which was determined from the CAPM [71] for a 25-year analysis of the project [21,40,51,58]. Five cases were considered for the economic analysis; Cases 1 and 2 represent possibilities without tax incentives, with or without leverage.…”

Section: Economic Analysismentioning

confidence: 99%

Assessment of Government Incentives for Energy from Waste in Colombia

et al. 2018

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This work evaluates the prefeasibility of energy from waste projects in Colombia under the guidelines of Law 1715. That piece of legislation proposes tax incentives for non-conventional energy initiatives, such as deductions of up to 50% on the investment through income tax, VAT exemption, tariff exemption, and accelerated depreciation of assets. Pasto, Colombia, was selected as the case study. Subsequently, incineration, gasification, anaerobic digestion, and landfill gas technologies were evaluated. The potential of electric power generation from municipal solid waste (MSW) of each conversion technology was estimated with mathematical models. Additionally, the economic evaluation considered five cases that combine loan options, accelerated depreciation, and income deductions. Finally, the prefeasibility analysis of each case and technology was based on the internal rate of return (IRR) and levelized cost of electricity (LCOE). The results reveal that only anaerobic digestion and landfill gas technologies constitute viable projects in case of traditional investment with and without loans, because they present IRRs greater than the discount rate, of 6.8%. However, by including the incentives in Law 1715 in the economic evaluation, IRRs of 11.18%, 7.96%, 14.27%, and 13.59% were obtained for incineration, gasification, anaerobic digestion, and landfill gas, respectively. These results make all four technologies feasible in this context.

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“…No Brasil, nota-se nos últimos anos uma maior tendência para fazer o aproveitamento energético do gás metano nos aterros sanitá-rios, principalmente pela queima em motores de combustão interna (BARROS, 2013;TIAGO FILHO;LEME et al, 2014;SOUZA et al, 2014;NADALETTI et al, 2015). O dimensionamento de projetos de aproveitamento do metano em aterros sanitários para a geração de eletricidade baseia-se normalmente em modelos cinéticos de primeira ordem exponencial (SPOKAS et al, 2006;MACHADO et al, 2009;MACIEL & JUCÁ, 2011;ABREU, 2014;WANGYAO et al, 2010).…”

Section: Evaluation Of Kinetic Parameters For Methane Generation In Aunclassified

Avaliação dos parâmetros cinéticos da geração de metano em uma célula experimental de resíduos sólidos

Candiani

Moreira

2018

Eng. Sanit. Ambient.

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RESUMO O presente trabalho avalia os parâmetros cinéticos de modelos de primeira ordem (exponenciais) para geração de metano em aterros sanitários na região subtropical de São Paulo (SP). Construiu-se uma célula experimental especialmente para esse objetivo. A função resposta temporal da célula para geração de metano devido a uma deposição de resíduos sólidos urbanos (RSU) foi obtida ao longo de 600 dias. O tempo necessário para iniciar a geração de metano foi de 190 dias. Entre o 400º e o 500º dia após a deposição dos resíduos houve uma fase de elevada taxa de geração de metano e, após o 560º dia, esta começou a diminuir de forma relevante. Os parâmetros cinéticos potencial de geração de metano (L) e constante de biodegradação para geração de metano (k) foram inferidos por meio de ajustes do modelo de primeira ordem à função resposta obtida experimentalmente e utilizando informações de composição dos RSU. Os valores obtidos para L e k para biodegradação rápida (nos primeiros 3 anos) foram, respectivamente, 1.481±1.072 mol t-1 RSU e 0,18±0,13 ano-1. Os valores obtidos para L e k considerando biodegradação rápida e lenta (até dezenas de anos) foram 3.835 mol t-1 RSU e 0,069±0,002 ano-1 e 5.027 mol t-1 RSU e 0,052±0,002 ano-1, respectivamente, dependendo da metodologia utilizada para a determinação de L. Os resultados obtidos na célula experimental indicam que a biodegradação dos RSU em Caieiras (SP) ocorre rapidamente, isto é, com valores maiores para k e menores para L do que aqueles sugeridos na literatura. Esses resultados indicam possível redução da longevidade dos projetos de aproveitamento energético do metano em aterros sanitários em regiões tropicais e subtropicais. Ao final são feitas recomendações para a escolha de L e k para dimensionamento de projetos de aproveitamento energético e para avaliações e remediações ambientais.

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The electric energy potential of landfill biogas in Brazil

Cited by 93 publications

References 19 publications

Evaluation of landfill gas plant siting problem: a multi-criteria approach

Evaluation of landfill gas plant siting problem: a multi-criteria approach

Assessment of Government Incentives for Energy from Waste in Colombia

Avaliação dos parâmetros cinéticos da geração de metano em uma célula experimental de resíduos sólidos

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