ecarbonizing ethanol production via gas fermentation: Impact of the CO/H-2/CO2 mix source on greenhouse gas emissions and production cost

Autor(es)

Benalcazar, Eduardo Almeida ^{[1, 2]} ; Noorman, Henk ^{[2, 3]} ; Maciel Filho, Rubens ^[1] ; Posada, John A. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Fac Chem Engn, Dept Prod & Proc Dev, Av Albert Einstein 500, BR-13083852 Campinas, SP - Brazil

^[2] Delft Univ Technol, Fac Appl Sci, Dept Biotechnol, Van der Maasweg 9, NL-2629 HZ Delft - Netherlands

^[3] DSM Biotechnol Ctr, A Fleminglaan 1, NL-2613 AX Delft - Netherlands

• Tipo de documento: Artigo Científico
• Fonte: Computers & Chemical Engineering; v. 159, MAR 2022.
• Citações Web of Science: 0

Resumo

This study explores key success factors for ethanol production via fermentation of gas streams, by assessing the effects of eight process variables driving the fermentation performance on the production costs and greenhouse gas emissions. Three fermentation feedstocks are assessed: off-gases from the steel industry, lignocellulosic biomass-derived syngas and a mixture of H-2 and CO2. The analysis is done through a sequence of (i) sensitivity analyses based on stochastic simulations and (ii) multi-objective optimizations. In economic terms, the use of steel off-gas leads to the best performance and the highest robustness to low mass transfer coefficients, low microbial tolerance to ethanol, acetic-acid co-production and to dilution of the gas feed with CO2, due to the relatively high temperature at which the gas feedstock is available. The ethanol produced from the three feedstocks lead to lower greenhouse gas emissions than fossil-based gasoline and compete with first and second generation ethanol. (C) 2022 The Authors. Published by Elsevier Ltd. (AU)

• Processo FAPESP: 15/20630-4 - Desenvolvimento integrado de biorrefinaria e planta de bioetanol de cana-de-açúcar com emissão zero de CO2: rotas para converter recursos renováveis em bioprodutos e bioeletricidade
• Beneficiário: Rubens Maciel Filho
• Modalidade de apoio: Auxílio à Pesquisa - Temático