Acidogenesis of pentose liquor to produce biohydrogen and organic acids integrated with 1G–2G ethanol production in sugarcane biorefineries
Guilherme Peixoto, Gustavo Mockaitis, Wojtyla Kmiecik Moreira, Daniel Moureira Fontes Lima, Marisa Aparecida de Lima, Filipe Vasconcelos Ferreira, Lucas Tadeu Fuess, Igor Polikarpov, Marcelo Zaiat
ARTIGO
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Agradecimentos: This research was funded by the FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO, grant numbers 2008/56255-9, 2009/17539-4 and 2009/15984-0. The APC was waived by the journal
Abstract: Second-generation (2G) ethanol production has been increasingly evaluated, and the use of sugarcane bagasse as feedstock has enabled the integration of this process with first-generation (1G) ethanol production from sugarcane. The pretreatment of bagasse generates pentose liquor as a...
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Abstract: Second-generation (2G) ethanol production has been increasingly evaluated, and the use of sugarcane bagasse as feedstock has enabled the integration of this process with first-generation (1G) ethanol production from sugarcane. The pretreatment of bagasse generates pentose liquor as a by-product, which can be anaerobically processed to recover energy and value-added chemicals. The potential to produce biohydrogen and organic acids from pentose liquor was assessed using a mesophilic (25 °C) upflow anaerobic packed-bed bioreactor in this study. An average organic loading rate of 11.1 g COD·L-1·d-1 was applied in the reactor, resulting in a low biohydrogen production rate of 120 mL·L-1 d-1. Meanwhile, high lactate (38.6 g·d-1), acetate (31.4 g·d-1), propionate (50.1 g·d-1), and butyrate (50.3 g·d-1) production rates were concomitantly obtained. Preliminary analyses indicated that the full-scale application of this anaerobic acidogenic technology for hydrogen production in a medium-sized 2G ethanol distillery would have the potential to completely fuel 56 hydrogen-powered vehicles per day. An increase of 24.3% was estimated over the economic potential by means of chemical production, whereas an 8.1% increase was calculated if organic acids were converted into methane for cogeneration (806.73 MWh). In addition, 62.7 and 74.7% of excess organic matter from the 2G ethanol waste stream could be removed with the extraction of organic acid as chemical commodities or their utilization as a substrate for biomethane generation, respectively
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2008/56255-9; 2009/17539-4; 2009/15984-0
Aberto
Peixoto, Guilherme
Autor
Moreira, Wojtyla Kmiecik
Autor
DOI: https://doi.org/10.3390/waste1030040
Texto completo: https://www.mdpi.com/2813-0391/1/3/40
Acidogenesis of pentose liquor to produce biohydrogen and organic acids integrated with 1G–2G ethanol production in sugarcane biorefineries
Guilherme Peixoto, Gustavo Mockaitis, Wojtyla Kmiecik Moreira, Daniel Moureira Fontes Lima, Marisa Aparecida de Lima, Filipe Vasconcelos Ferreira, Lucas Tadeu Fuess, Igor Polikarpov, Marcelo Zaiat
Acidogenesis of pentose liquor to produce biohydrogen and organic acids integrated with 1G–2G ethanol production in sugarcane biorefineries
Guilherme Peixoto, Gustavo Mockaitis, Wojtyla Kmiecik Moreira, Daniel Moureira Fontes Lima, Marisa Aparecida de Lima, Filipe Vasconcelos Ferreira, Lucas Tadeu Fuess, Igor Polikarpov, Marcelo Zaiat
Fontes
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Waste v. 1, n. 3, p. 672-688, Aug. 2023 |