Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/346448
Type: Artigo
Title: Biochemical butyrate production via dark fermentation as an energetically efficient alternative management approach for vinasse in sugarcane biorefineries
Author: Fuess, Lucas Tadeu
Santos, Graciete Marydos
Delforno, Tiago Palladino
Moraes, Bruna de Souza
Silva, Ariovaldo José da
Abstract: This study investigated the application of dark fermentation to obtain value-added soluble metabolite products (SMP) from vinasse as a strategy to enhance the energy efficiency in sugarcane biorefineries. Batch tests comparing sucrose and vinasse as the substrates were conducted, providing data to both understand conversion pathways and measure the energetic implications of fermenting vinasse under controlled conditions. Two distinct inoculum pretreatment methods, namely, acid-thermal and thermal were also assessed. Overall, butyrate fermentation was the primary conversion pathway observed in vinasse acidogenesis, leading to butyric/isobutyric acid concentrations over 6.0 g L−1, irrespective of the inoculum pretreatment. Lactic and malic acids were the primary substrates, with the predominance of the lactate-to-butyrate fermentation, suggesting the establishment of a syntrophic relation between lactate-producing bacteria and clostridial populations. Considering energetic aspects, the enhanced butyrate production could lead to an energy recovery potential of 30.9–33.4 MW, outcompeting highly-efficient biohydrogen- (<1.0 MW) and methane-producing (25.5 MW) anaerobic systems, in order to increase sugar conversion efficiency by 7.8%. Although important technological aspects still require proper attention to cost-efficiently scale-up SMP recovery from fermented substrates, the energetic relevance of butyrate production from vinasse was proved, characterizing an efficient approach to enhance the energy performance of sugarcane biorefineries.
Subject: Cana-de-açúcar
Fermentação
Country: Reino Unido
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.renene.2020.05.063
Address: https://www.sciencedirect.com/science/article/abs/pii/S0960148120307618
Date Issue: 2020
Appears in Collections:FEAGRI - Artigos e Outros Documentos
CPQBA - Artigos e Outros Documentos
NIPE - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
000542587500002.pdf1.38 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.