title: Simulation of the ozone pretreatment of wheat straw.
abstract: Wheat straw is a potential feedstock in biorefinery for sugar production. However, the cellulose, which is the major source of sugar, is protected by lignin. Ozonolysis deconstructs the lignin and makes cellulose accessible to enzymatic digestion. In this study, the change in lignin concentration with different ozonolysis times (0, 1, 2, 3, 5, 7, 10, 15, 20, 30, 60min) was fit to two different kinetic models: one using the model developed by Garcia-Cubero et al. (2012) and another including an outer mass transfer barrier or "cuticle" region where ozone mass transport is reduced in proportion to the mass of unreacted insoluble lignin in the cuticle. The kinetic parameters of two mathematical models for predicting the soluble and insoluble lignin at different pretreatment time were determined. The results showed that parameters derived from the cuticle-based model provided a better fit to experimental results compared to a model without a cuticle layer.
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States.
authors.forename: Sujala
authors.initials: S
authors.lastname: Bhattarai
authors.affiliation: Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, P.O. Box 646515, Pullman, WA 99164-6515, United States.
authors.forename: Danny
authors.initials: D
authors.lastname: Bottenus
authors.affiliation: Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, P.O. Box 646515, Pullman, WA 99164-6515, United States. Electronic address: cfivory@wsu.edu.
authors.forename: Cornelius F
authors.initials: CF
authors.lastname: Ivory
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States.
authors.forename: Allan Haiming
authors.initials: AH
authors.lastname: Gao
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States.
authors.forename: Mahesh
authors.initials: M
authors.lastname: Bule
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States.
authors.forename: Manuel
authors.initials: M
authors.lastname: Garcia-Perez
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States.
authors.forename: Shulin
authors.initials: S
authors.lastname: Chen
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002482:Cellulose / Q000032:analysis; D005947:Glucose / Q000032:analysis; D057446:Hydrodynamics; D006868:Hydrolysis; D007700:Kinetics; D008031:Lignin / Q000032:analysis; D008962:Models, Theoretical; D010126:Ozone / Q000494:pharmacology*; D012995:Solubility; D013223:Statistics as Topic; D014908:Triticum / Q000187:drug effects*; D014866:Waste Products / Q000032:analysis*; D014994:Xylose / Q000032:analysis
chemical_list: D014866:Waste Products; D010126:Ozone; D002482:Cellulose; D008031:Lignin; D014994:Xylose; D005947:Glucose
keywords: Cuticle hypothesis; Mathematical modeling; Ozone pretreatment; Wheat straw