Preparation of Chitosan-Bagasse Activated Carbon Composite Material and Its Application in Sugar Juice Clarification
Bagasse activated carbon is prepared from bagasse biomass,and it is cross-linked with chitosan to obtain chitosan-bagasse activated carbon,and then it is applied to sugar juice decolorization.The effects of material dosage,absorption temperature,decolorization time and pH on decolorization effect are investigated.The results show that when the concentration of KOH is 20％and the activation temperature is 700 ℃,the adsorption performance of bagasse activated carbon is the best.When the dosage of bagasse activated carbon is 0.10 g,the adsorption temperature is 50 ℃,the decolorization time is 60 min and the pH is 5.0,the decolorization rate of sugar juice is the highest,reaching 84.35％.When the dosage of chitosan-bagasse activated carbon is 0.15 g,the adsorption temperature is 70 ℃,the decolorization time is 60 min and the pH is 6.0,the decolorization rate of sugar juice is the highest,reaching 97.12％.
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