Comparison of microwave and conduction-convection heating autohydrolysis pretreatment for bioethanol production
2017
Aguilar-Reynosa, Alejandra | Romaní, Aloia | Rodríguez-Jasso, Rosa M. | Aguilar, Cristóbal N. | Garrote, Gil | Ruiz, Héctor A.
This work describes the application of two forms of heating for autohydrolysis pretreatment on isothermal regimen: conduction-convection heating and microwave heating processing using corn stover as raw material for bioethanol production. Pretreatments were performed using different operational conditions: residence time (10–50 min) and temperature (160–200°C) for both pretreatments. Subsequently, the susceptibility of pretreated solids was studied using low enzyme loads, and high substrate loads. The highest conversion was 95.1% for microwave pretreated solids. Also solids pretreated by microwave heating processing showed better ethanol conversion in simultaneous saccharification and fermentation process (92% corresponding to 33.8g/L). Therefore, microwave heating processing is a promising technology in the pretreatment of lignocellulosic materials.
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