2017
DOI: 10.5935/2318-7670.v05nespa10
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Fatores que influenciam o processo de digestão anaeróbia na produção de biogás

Abstract: RESUMO: A digestão anaeróbia é definida como uma complexa interação de diferentes microrganismos, os quais degradam a matéria orgânica presente até a forma final de, principalmente, metano e dióxido de carbono. Este processo tem sido aplicado para o tratamento de efluentes tanto em países desenvolvidos como naqueles em desenvolvimento. Contudo, sua eficiência é afetada por uma série de fatores que vão desde as condições ambientais e de operação do sistema, natureza do substrato, até as características do biodi… Show more

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Cited by 4 publications
(5 citation statements)
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“…Furthermore, the population criterion is just one of the influencing factors for the economic analysis. To evaluate conditions in which the proposal is financially attractive and to contemplate the uncertainties associated with the variations in the price of energy, a sensitivity analysis was carried out [43].…”
Section: Energy Produced and Economic Viabilitymentioning
confidence: 99%
See 1 more Smart Citation
“…Furthermore, the population criterion is just one of the influencing factors for the economic analysis. To evaluate conditions in which the proposal is financially attractive and to contemplate the uncertainties associated with the variations in the price of energy, a sensitivity analysis was carried out [43].…”
Section: Energy Produced and Economic Viabilitymentioning
confidence: 99%
“…Considering that the calculations above were elaborated to determine the minimum population for economic feasibility (NPV > 0), a sensitivity analysis was conducted not only to determine the attractiveness of the project (IRR > MARR), but also to account for uncertainties, which are inherent to any investment endeavor. This analysis involves the variation of an independent variable in the calculations to evaluate the impact on the results [43]. Thus, for the sensitivity analysis, payback periods of 10 and 15 years were prepared, with the energy rate varied between 80% and 120% of the initial value of 0.116 USD/kWh (100%), in 10% intervals.…”
Section: Energy and Economic Evaluationmentioning
confidence: 99%
“…Logo em seguida, na acetogênese, as substâncias geradas na fase anterior são oxidadas pelas bactérias sintróficas e transformadas em substratos, os quais são utilizados pelos microrganismos metanogênicos. Por fim, na etapa de metanogênese, ocorre a formação de gás carbônico (CO2) e do principal produto desse processo, o gás metano (CH4) (Soares et al, 2017 O processo anaeróbio é utilizado no tratamento de águas residuais que contêm uma grande carga de compostos orgânicos, sendo mais econômico e eficiente quando o efluente possui alta biodegradabilidade (Pauli, 2018). Entre os principais sistemas de tratamento anaeróbio, destacam-se as lagoas anaeróbias, os tanques sépticos, filtros anaeróbios e os reatores de alta taxa.…”
Section: Artigos Inclusos Autor E Dataunclassified
“…The process of anaerobic fermentation can be divided into four sequenced stages: hydrolysis, acidogenesis, acetogenesis, and methanogenesis (Vavilin et al, 1996;Soares et al, 2017) (Santos, 1992), and the incorporation of other minerals and/or inoculants sets it apart from enriched biofertilizers, such as the Supermagro (Trés & Resende, 1995), Agrobio (Fernandes, 2000) and the Agrobom (Silva et al, 2007a), under aerobic fermentation. (Trés & Resende, 1995).…”
Section: Production Of Bovine Manure Biofertilizersmentioning
confidence: 99%