title: A catalytic biofuel production strategy involving separate conversion of hemicellulose and cellulose using 2-sec-butylphenol (SBP) and lignin-derived (LD) alkylphenol solvents.
abstract: A strategy in which the hemicellulose and cellulose fractions of lignocellulosic biomass are converted separately to jet fuel-range liquid hydrocarbon fuels (butene oligomers) through catalytic processes is developed. Dilute sulfuric acid (SA)-catalyzed pretreatment fractionates the first biomass into cellulose and hemicellulose-derived xylose, and these are then converted separately to levulinic acid (LA) using 2-sec-butylphenol (SBP) and lignin-derived (LD) alkylphenol solvents, respectively. LA is upgraded catalytically to butene oligomers via γ-valerolactone (GVL) and butene intermediates. Separation subsystems are designed to recover the alkylphenol solvents and biomass-derived intermediates (LA and GVL) for combination with the catalytic conversion subsystems of hemicellulose, cellulose, and lignin. In addition, a heat exchanger network (HEN) design is presented to satisfy the energy requirements of the integrated process from combustion of biomass residues (degradation products). Finally, a technoeconomic analysis shows that the proposed process ($3.37/gallon of gasoline) is an economically competitive alternative to current biofuel production approaches.
authors.affiliation: School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, South Korea.
authors.forename: Sunghoon
authors.initials: S
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, South Korea. Electronic address: jhhan@jbnu.ac.kr.
authors.forename: Jeehoon
authors.initials: J
authors.lastname: Han
mesh_terms: D056804:Biofuels / Q000032:analysis*; D018533:Biomass; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D005591:Chemical Fractionation; D000431:Ethanol; D005285:Fermentation; D006868:Hydrolysis; D007783:Lactones; D008031:Lignin / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
chemical_list: D056804:Biofuels; D007783:Lactones; D010636:Phenols; D011134:Polysaccharides; D012997:Solvents; C033932:2-sec-butylphenol; D000431:Ethanol; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; C037556:gamma-valerolactone
keywords: Alkylphenol solvents; Biofuels; Levulinic acid; Process design; Technoeconomic evaluation