Simulation of the ozone pretreatment of wheat straw
| Autor: | Danny Bottenus, Sujala Bhattarai, Allan Haiming Gao, Shulin Chen, Cornelius F. Ivory, Mahesh V. Bule, Manuel Garcia-Perez |
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| Rok vydání: | 2015 |
| Předmět: |
Environmental Engineering
Cuticle Statistics as Topic Bioengineering Xylose Lignin chemistry.chemical_compound Bioreactors Ozone Mass transfer Biomass Cellulose Sugar Waste Management and Disposal Triticum Waste Products Renewable Energy Sustainability and the Environment Hydrolysis General Medicine Models Theoretical Straw Biorefinery Kinetics Glucose Solubility chemistry Agronomy Chemical engineering Hydrodynamics |
| Zdroj: | Bioresource Technology. 196:78-87 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2015.07.022 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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