title: Techno-economic analysis of different pretreatment processes for lignocellulosic-based bioethanol production.
abstract: In this work, a method based on process synthesis, simulation and evaluation has been used to setup and study the industrial scale lignocellulosic bioethanol productions processes. Scenarios for pretreatment processes of diluted acid, liquid hot water and ammonia fiber explosion were studied. Pretreatment reactor temperature, catalyst loading and water content as well as solids loading in the hydrolysis reactor were evaluated regarding its effects on the process energy consumption and bioethanol concentration. The best scenarios for maximizing ethanol concentration and minimizing total annual costs (TAC) were selected and their minimum ethanol selling price was calculated. Ethanol concentration in the range of 2-8% (wt.) was investigated after the pretreatment. The best scenarios maximizing the ethanol concentration and minimizing TAC obtained a reduction of 19.6% and 30.2% respectively in the final ethanol selling price with respect to the initial base case.
authors.affiliation: Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
authors.forename: André Rodrigues Gurgel
authors.initials: AR
authors.lastname: da Silva
authors.affiliation: Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
authors.forename: Carlo Edgar
authors.initials: CE
authors.lastname: Torres Ortega
authors.affiliation: Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark. Electronic address: bgr@kbm.sdu.dk.
authors.forename: Ben-Guang
authors.initials: BG
authors.lastname: Rong
mesh_terms: D000143:Acids / Q000737:chemistry; D000641:Ammonia / Q000378:metabolism; D001709:Biotechnology / Q000191:economics* / Q000379:methods*; D003362:Cost-Benefit Analysis; D004734:Energy Metabolism; D000431:Ethanol / Q000191:economics* / Q000378:metabolism*; D005285:Fermentation; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism*; D014867:Water / Q000737:chemistry
chemical_list: D000143:Acids; D014867:Water; C036909:lignocellulose; D000431:Ethanol; D000641:Ammonia; D008031:Lignin
keywords: Bioethanol; Lignocellulosic biomass; Pretreatment; Techno-economic analysis