Title:
An Advanced Biorefinery for Butanol, Acetone and Electricity Coproduction Under a Consolidated Bioprocessing Scheme
Author(s):
Soto, A., Sánchez, D., Molina-Guerrero, C.E., Valdez-Vazquez, I., Sánchez, A.
Document(s):
Paper
Abstract:
A conceptual design is presented for an advanced biorefinery employing a Consolidated Bioprocessing (CBP) scheme for acetone-butanol-ethanol (ABE) fermentation employing wheat straw (WS) as feedstock. Hydrogen and methane production stages are considered for electricity cogeneration purposes. A novel extraction-distillation stage is included for separating butanol and acetone from the fermentation broth. A parametric analysis of butanol total production cost (TPC) was carried out for a mid-size plant capacity considering the WS availability in west Mexico. Different plant capacities (100, 250, 500, 1,000, 1,500 and 2,000 ton/day) and WS purchasing price depending on its polysaccharide content (PC) with values of 45, 50, 55 and 60% w/w were analyzed. WS purchasing prices were considered from 6.00 USD/ton for composted WS (45% PC) to 75.00 USD/ton for new WS (60% PC). The surplus electricity and acetone produced are sold as byproducts. The best case scenario was obtained using a plant capacity of 2,000 ton/day and the lowest PC (45%) with a butanol TPC of 0.66 USD/kg. A feasible plant capacity in accordance to the regions feedstock availability corresponds to 500 ton/day, achieving a TPC of 0.97 USD/kg with 45% PC.
Keywords:
biogas, biorefinery, biohydrogen, lignocellulosic biofuel, ABE fermentation, electricity cogeneration
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Biorefineries and chemicals production
Event:
23rd European Biomass Conference and Exhibition
Session:
3AV.3.30
Pages:
1097 - 1100
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3AV.3.30
Price:
FREE
