Journal article
Simulation of the ozone pretreatment of wheat straw
Bioresource technology, Vol.196, pp.78-87
11/2015
Handle:
https://hdl.handle.net/2376/108498
PMID: 26231127
Abstract
•Two models for ozonolysis pretreatment of wheat straw were developed.•First study that takes into account the residual lignin.•Compared cuticle model with the existing general model for ozonolysis of biomass.•Cuticle model better fit with experimental data.
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.
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Details
- Title
- Simulation of the ozone pretreatment of wheat straw
- Creators
- Sujala Bhattarai - Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United StatesDanny Bottenus - Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, P.O. Box 646515, Pullman, WA 99164-6515, United StatesCornelius F Ivory - Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, P.O. Box 646515, Pullman, WA 99164-6515, United StatesAllan Haiming Gao - Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United StatesMahesh Bule - Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United StatesManuel Garcia-Perez - Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United StatesShulin Chen - Department of Biological Systems Engineering, Washington State University, Pullman 99164-6120, United States
- Publication Details
- Bioresource technology, Vol.196, pp.78-87
- Academic Unit
- Biological Systems Engineering, Department of; Chemical Engineering and Bioengineering, School of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900546892201842
- Language
- English
- Resource Type
- Journal article