Abstract
Corn stover in rich source was taken as the research object. The pre-treatment process of corn stover by urea was proposed. The effects of urea amount, temperature, time and the ratio of solid-liquid on the degradation of lignin were investigated. The results showed that urea had a definite degradation effect on lignin and hemicellulose in corn stover. The optimum experimental conditions were as follows: 8g corn stover, 0.8g urea and 80ml water were added in triangle bottle. The degradation was carried out for 4 h shocked with 170 r/min speed in a thermostatic water bath oscillator at 60°C temperature. The degradation rate of lignin was about 40%. The regent of urea was environment friendly and the method was prospect for practical application.
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