Study on the effect of ultrasound coupled TiO2/UV photocatalytic treatment on the composition of corn straw
In this paper,ultrasound coupled TiO2/UV photocatalytic treatment of corn straw was used to investigate the effects of treatment conditions on the components and structure of corn straw.The results of the study showed that the lignin and hemicellulose in corn straw were reduced from 26.06％and 20.58％untreated to 22.85％and 18.39％,respectively,and the cellulose content was increased from 37.67％to 40.39％under the conditions of TiO2 addition of 0.25g·L-1,pH 8.25,and ultrasonic intensity of 0.625W·mL-1,and treatment for 1 hour.The ultrasound coupled TiO2/UV photocatalytic treatment could destroy the structure of corn straw,which was broken into small fragments with rough and wrinkled surfaces.This study can provide technical reference for the application of ultrasound coupled TiO2/UV photocatalysis technology in corn straw pretreatment.
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