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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Economics of anaerobic digestion for processing sugarcane vinasse: Applying sensitivity analysis to increase process profitability in diversified biogas applications

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Autor(es):
Fuess, Lucas Tadeu [1] ; Zaiat, Marcelo [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo LPB EESC USP, Biol Proc Lab, Sao Carlos Sch Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: PROCESS SAFETY AND ENVIRONMENTAL PROTECTION; v. 115, n. SI, p. 27-37, APR 2018.
Citações Web of Science: 4
Resumo

Anaerobic digestion (AD) is the most suitable approach for managing vinasse, the main wastewater from ethanol production, based on potential biogas applications. However, despite significant improvements in both scientific and technological aspects of the AD of vinasse, specific aspects of the global process require a better understanding to facilitate the scale-up of treatment systems. In this context, this study aimed to identify the main factors that affect the economic performance of the AD of vinasse in sugarcane biorefineries using a techno-economic approach. The energy recovery potential, as well as economic parameters were obtained for different biogas applications. Sensitivity analysis was also used to assess the impacts of different factors on the profitability of the process. Overall, biomethane production economically outperformed electricity generation, regardless of the biorefinery type (autonomous or annexed) and AD layout (single- or two-phase). In turn, investment costs on AD-power plants and product (electricity or biomethane) prices characterized the primary factors governing the economic performance of biogas reuse, regardless of the proposed application. These results confirm the key role of external agents in encouraging the implementation of AD plants in ethanol biorefineries by establishing specific funding for biogas projects, imposing environmental restrictions and/or developing competitive AD-related technological packages. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 12/15606-9 - Biodigestão anaeróbia termofílica de vinhaça em sistemas combinados do tipo acidogênico-metanogênico para potencialização da recuperação de bioenergia em biorrefinarias de cana-de-açúcar de primeira geração
Beneficiário:Lucas Tadeu Fuess
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 09/15984-0 - Produção de bioenergia no tratamento de águas residuárias e adequação ambiental dos efluentes e resíduos gerados
Beneficiário:Marcelo Zaiat
Linha de fomento: Auxílio à Pesquisa - Temático