کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
300934 512492 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energy requirements during butanol production and in situ recovery by cyclic vacuum
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Energy requirements during butanol production and in situ recovery by cyclic vacuum
چکیده انگلیسی

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.


► ABE fermentation and integrated product recovery by cyclic vacuum was investigated.
► The cyclic operation consisted of 2 h-vacuum-cycles separated by 4 h-fermentation intervals at atmospheric pressure.
► Clostridium beijerinckii 8052 can tolerate alternate pressure conditions.
►  Application of periodic vacuum sufficed elimination of butanol toxicity to C. beijerinckii.
► Cyclic vacuum ABE fermentation is more energy efficient than the conventional process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 47, November 2012, Pages 183–187
نویسندگان
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