The current energetic scenario has revived the interest in Acetone-Butanol-Ethanol (ABE) fermentations. The recovery process of ABE from the fermentation broth is particular expensive as a consequence of the low concentration established during the fermentation. Since the ABE production kinetics is characterized by product inhibition, the ABE concentration in the bioreactor is typically lower than 20g/L. The present work reports about a cost-effective flow-sheet for the recovery of butanol produced by fermentation. The study is based on approximated cost-estimation methods integrated with the simulation software Aspen Plus®. The recovery line investigated included gas-stripping, absorption of butanol in a selected liquid phase, distillation to separate the butanol from the selected liquid. The design variables were selected in agreement with the estimated degree of freedom of the process. The venture profit of the process was estimated as a function of operating conditions.
Optimization of Solvent Recovery in the Production of Butanol by Fermentation / Napoli, Fabio; Marzocchella, Antonio; Salatino, Piero. - STAMPA. - Convegno G.R.I.C.U. 2008: Ingegneria Chimica le nuove sfide:(2008), pp. 279-284. (Intervento presentato al convegno Convegno G.R.I.C.U. 2008: Ingegneria Chimica le nuove sfide tenutosi a Le Castelle (Kr) nel 14-17 Settembre 2008).
Optimization of Solvent Recovery in the Production of Butanol by Fermentation
NAPOLI, FABIO;MARZOCCHELLA, ANTONIO;SALATINO, PIERO
2008
Abstract
The current energetic scenario has revived the interest in Acetone-Butanol-Ethanol (ABE) fermentations. The recovery process of ABE from the fermentation broth is particular expensive as a consequence of the low concentration established during the fermentation. Since the ABE production kinetics is characterized by product inhibition, the ABE concentration in the bioreactor is typically lower than 20g/L. The present work reports about a cost-effective flow-sheet for the recovery of butanol produced by fermentation. The study is based on approximated cost-estimation methods integrated with the simulation software Aspen Plus®. The recovery line investigated included gas-stripping, absorption of butanol in a selected liquid phase, distillation to separate the butanol from the selected liquid. The design variables were selected in agreement with the estimated degree of freedom of the process. The venture profit of the process was estimated as a function of operating conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
