Artículos de revistas
Energy requirements during butanol production and in situ recovery by cyclic vacuum
Registro en:
Renewable Energy. Pergamon-elsevier Science Ltd, v. 47, n. 183, n. 187, 2012.
0960-1481
WOS:000305712700020
10.1016/j.renene.2012.04.041
Autor
Mariano, AP
Maciel, R
Ezeji, TC
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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. 47 183 187 US Department of Transportation [DTOS59-07-G-00052] Northeast Sun grant Initiative Award [52110-9615] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Ohio BioProducts Innovation Center (OBIC) OSU Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) US Department of Transportation [DTOS59-07-G-00052] Northeast Sun grant Initiative Award [52110-9615] FAPESP [2007/00341-1]