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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.)

Energy requirements during butanol production and in situ recovery by cyclic vacuum

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Autor(es):
Mariano, Adriano Pinto [1, 2] ; Maciel Filho, Rubens [1] ; Ezeji, Thaddeus Chukwuemeka [2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Campinas UNICAMP, Sch Chem Engn, Lab Optimizat Design & Adv Control LOPCA, BR-13083852 Campinas, SP - Brazil
[2] Ohio State Univ, Ohio Agr Res & Dev Ctr, Dept Anim Sci, Wooster, OH 44691 - USA
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: RENEWABLE ENERGY; v. 47, p. 183-187, NOV 2012.
Citações Web of Science: 25
Resumo

Performance of the ABE fermentation and integrated product recovery by cyclic vacuum was investigated in a 14-1 bioreactor containing initial glucose concentration of 60 g l(-1) at 35 degrees C. The cyclic operation consisted of 2 h-vacuum-cycles separated by 4 h-fermentation intervals at atmospheric pressure. Application of periodic vacuum sufficed to eliminate hutanol inhibition of Clostridium beijerinckii 8052 culture, which tolerated alternate vacuum and atmospheric pressures. A 39% reduction in the energy requirement for acetone butanol ethanol (ABE) fermentation and in situ recovery by vacuum was achieved by changing the mode of vacuum operation from continuous (24 h vacuum time) to cyclic (12 h vacuum time). Analysis of the overall energy consumption for ABE fermentation and recovery (vacuum fermentation + distillation) demonstrated that cyclic vacuum ABE fermentation is more energy efficient than the conventional batch fermentation. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 07/00341-1 - Modelagem, simulação e controle de um processo fermentativo contínuo extrativo de produção de butanol
Beneficiário:Adriano Pinto Mariano
Linha de fomento: Bolsas no Brasil - Pós-Doutorado