Effects of alkaline organosolv delignification on enzymatic conversion of cellulose from sugarcane bagasse pretreated by steam explosion

• Autores: Luis R. M. Oliveira, Viviane Marcos Nascimento, Débora Lee Simões Corso, Vinícius F. N. Silva, George Rocha, Adilson R. Gonçalves
• Localización: Investigaciones Aplicadas, ISSN-e 2011-0413, Vol. 7, Nº. 1, 2013 (Ejemplar dedicado a: Revista Investigaciones Aplicadas), págs. 1-10
• Idioma: inglés
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• Resumen

  • The enzymatic conversion of pretreated and delignificated sugarcane bagasse was evaluated by L18 Taguchi experimental design. The factors selected for the study were: ethanol and caustic soda concentration, temperature, reaction time and fiber/liquor ratio. The NaOH concentration was the only significant factor in the delignification, hemicellulose solubilization and cellulose conversion. Recovery of ethanol was influenced by only the fiber/liquor ratio, for the same level. The lignin and hemicellulose removal from bagasse pretreated by steam explosion has reached over 80% and 55%, respectively. Pulps with the lowest lignin and hemicellulose contents had the best results of the cellulose conversion, almost 70%.