 Energy requirements during butanol production and in situ recovery by cyclic vacuumAdriano Pinto Mariano, Rubens Maciel Filho and Thaddeus Chukwuemeka Ezeji Renewable Energy, 2012, vol. 47, issue C, 183-187 Abstract: Performance of the ABE fermentation and integrated product recovery by cyclic vacuum was investigated in a 14-l bioreactor containing initial glucose concentration of 60 g l−1 at 35 °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 butanol 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. Keywords: Butanol; ABE; Clostridium beijerinckii 8052; Vacuum fermentation; Cyclic operation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:47:y:2012:i:c:p:183-187 DOI: 10.1016/j.renene.2012.04.041 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.