Techno-Economic Evaluation and GHG Emission Assessment of Different Options for Vinasse Treatment and Disposal Aiming at Reducing Transport Expenses and Its Energy Use

Palacios-Bereche, Milagros Cecilia; Palacios‐Bereche, Reynaldo; Nebra, Sílvia A.

doi:10.1007/s12155-021-10247-7

Cited by 7 publications

(6 citation statements)

References 53 publications

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“…In it, the starting point is the processing of 500 t/h of sugarcane. Mass and energy balances in this process were performed in previous research studies [9], [10]. Figure 1 shows the main flows of the production process.…”

Section: Case 0 -Base Casementioning

confidence: 99%

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

Bereche

Silva

Aguilera

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The sugarcane industrial sector is one of the main Brazilian economic activities due to its high efficiency and competitiveness, producing ethanol and sugar for internal and external markets. On the other hand, green hydrogen, produced from renewable energy, has emerged as a promising climate-neutral energy carrier over the last years; thus, several countries have published hydrogen roadmaps and are supporting the development of a hydrogen economy. Currently, hydrogen is produced mainly from natural gas through a reformation process; the refineries and the chemical industry are the main hydrogen consumers on the demand side. This hydrogen, produced from natural gas or methane without capturing the greenhouse gases made in the process, is classified as Grey hydrogen. In this way, in this study, the integration of Green hydrogen production into the conventional ethanol and sugar production process is proposed to use in the hydrotreatment of bio-oil produced via fast pyrolysis of sugarcane straw. Nevertheless, the sustainability and efficiency of the integrated process depend on the route adopted for hydrogen production. Thus, this study aims to perform an energy evaluation of different routes of hydrogen production and their integration into the ethanol and sugar production process from sugarcane. The different alternatives evaluated are: i) electrolysis using the surplus electricity in the process; ii) steam reforming of biogas produced from vinasse; iii) steam reforming of part of the ethanol produced. Furthermore, the impacts on the cogeneration system of the production process will also be evaluated.From the evaluated cases, ethanol reforming presented the lowest water consumption (14.1 L/t cane) and the lowest impact in cogeneration system (-6.3% in surplus electricity). Nevertheless Case III requires the consumption of 27.7% of the total ethanol produced in the mill.

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Section: Case 0 -Base Casementioning

confidence: 99%

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

Bereche

Silva

Aguilera

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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“…O etanol de segunda geração também é um método de reaproveitar os carboidratos oriundos da hidrólise deste material lignocelulósico. Como foi previamente mencionado, o melaço é utilizado como aditivo ao caldo na geração de etanol de primeira geração (PANT; ADHOLEYA, 2007). Contudo, a intensa geração de vinhaça (11 a 14 litros por litro de etanol) limita as opções para a aplicação ambientalmente adequada deste resíduo (WILKIE; RIEDESEL; OWENS, 2000;SYDNEY et al, 2021).…”

Section: Vinhaça: Da Geração Ao Reaproveitamentounclassified

“…de resfriamento e água de limpeza de equipamentos) (PANT; ADHOLEYA, 2007). No geral, a vinhaça contém sais dissolvidos (potássio, cálcio e íons sulfato), aminoácidos, carboidratos (sacarose, glicose, xilose), compostos fenólicos (ácidos tânicos e húmicos) e álcoois que conferem elevada concentração de matéria orgânica a este resíduo (DQO entre 15 e 299 g DQO L -1 ) (GODOI et al, 2019;PARSAEE;KIANI;KARIMI, 2019).…”

Section: Vinhaça: Da Geração Ao Reaproveitamentounclassified

Co-digestão de vinhaça e glicerina em reatores anaeróbios de leito fluidificado

Menezes¹

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“…Atualmente, a maior parte da vinhaça produzida é utilizada para irrigar e fertilizar os canaviais [86]. No entanto, devido ao grande volume produzido (cerca de 10 a 15 litros de vinhaça são produzidos por litro de etanol [87]), a sua destinação adequada pode implicar em grandes gastos para a usina [58].…”

Section: 2recuperação Energética De Resíduos Da Cana-de-açúcarunclassified

“…A Figura 5-20 apresenta o potencial de geração de eletricidade, durante a safra, para todos os CCHs investigados, incluindo o cenário cujo modo de operação utiliza uma turbina a gás de maior porte (TG4, avaliado na seção anterior). pode representar grandes taxas de emissões anuais no campo [58], [87], [188].…”

Section: 43uso Do Biogás Da Vinhaçaunclassified

Análise Técnica, Econômica E Ambiental De Usinas Termelétricas Alimentadas Por Biomassa Residual Operando Com Ciclos Combinados Híbridos

ANDRADE FURTADO

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Aos meus familiares e amigos pelo apoio nestes anos de trabalho.Aos meus orientadores Prof. Florian Pradelle e José Alberto dos Reis Parise por me orientarem com firmeza e seriedade durante meu programa de doutorado na PUC-Rio. Um agradecimento especial ao meu coorientador Dr.Sergio Vieira Guerreiro Ribeiro, por ter me orientado com muita sabedoria, permitindo eu dar mais este passo na minha carreira profissional.

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Techno-Economic Evaluation and GHG Emission Assessment of Different Options for Vinasse Treatment and Disposal Aiming at Reducing Transport Expenses and Its Energy Use

Cited by 7 publications

References 53 publications

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

Co-digestão de vinhaça e glicerina em reatores anaeróbios de leito fluidificado

Análise Técnica, Econômica E Ambiental De Usinas Termelétricas Alimentadas Por Biomassa Residual Operando Com Ciclos Combinados Híbridos

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