Title: Ultrasonic-microwave assisted citric acid catalytic hydrolysis of cellulose
Abstract: Using citric acid as catalyst,straw cellulose was hydrolyzed by ultrasonic-microwave assisted technique. The influence of acid concentration,ultrasonic treatment time and microwave heating time was discussed with reducing sugar yield as index. On the basis of single factor test,the results were analyzed through orthogonal test of three factors with three levels. The highest yield of reducing sugar obtained was up to 64.46%,when citric acid concentration was 20%,ultrasonic treatment time and microwave heating time were 120min and 30min,and microwave power was 500W. IR characterization showed that hydrolysis residue still existed in the form of cellulose and could be re-hydrolyzed to increase the utilization rate of raw materials.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 1
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