Theoretical modeling and experimental validation of hydrodynamic cavitation reactor with a Venturi tube for sugarcane bagasse pretreatment
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Data
2020-09-01
Autores
Bimestre, Thiago Averaldo [UNESP]
Júnior, José Antonio Mantovani
Botura, César Augusto
Canettieri, ElianaVieira [UNESP]
Tuna, Celso Eduardo [UNESP]
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Resumo
A hydrodynamic cavitation reactor with a Venturi tube was modeled through a computational fluid dynamics approach in order to evaluate the influence of pressure ratio, diameter and length of the throat zone. A cavitation reactor equipped with a Venturi tube was built in accordance with the computational modeling results. Hydrodynamic cavitation assisted alkaline pretreatment was performed to evaluate the influence of NaOH concentration (1–5%), the weight to volume percentage of solid in liquid (1–5%) and the reaction time (20–60 min.) in the lignin removal. The response surface methodology was used to optimize pretreatment parameters for maximum lignin removal. The optimal condition was 4.90% of NaOH and a solid weight percentage in liquid of 2.03% in 58.33 min, resulting in a maximum removal of 56.01% of lignin. Hydrodynamic cavitation can be easy to employ, an efficient and promissory pretreatment tool.
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Alkaline pretreatment, Hydrodynamic cavitation, Response surface methodology (RSM), Sugarcane bagasse, Venturi tube
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Bioresource Technology, v. 311.