Optimization of extracting cellulose from sugarcane bagasse using ultrasound-assisted alkaline hydrogen peroxide

Objective The effect of ultrasonic on the extraction process and the cellulose content was studied to optimize the process of extracting cellulose from sugarcane bagasse. Method The best parameters of extracting cellulose from sugarcane bagasse using ultrasound-assisted alkaline hydrogen peroxide were determined, and the influence of ultrasonic treatment on the morphological structure of bagasse cellulose was also researched using inverted microscope. ResultUnder the optimum conditions (ultrasonic intensity of 200W, extracting time of 70 min, extracting temperature of 80℃, the mixed solution H2O2 and NaOH concentration of 0.7% and 6%), the content of bagasse cellulose reached more than 87.54%, which increased by 8.69% compared with no auxiliary of ultrasonic. Conclusion Using ultrasound-assisted alkaline hydrogen peroxide to pretreat bagasse, the reagent of accessibility and reaction performance of bagasse fiber were improved. The reaction time was reduced, and the reaction efficiency was boosted.