The Optimization of Bamboo Heat Treatment Process

In this paper,the heat treatment processes of bamboo,including cooking,bleaching and carbonization,were optimized. The results showed that when hydrogen peroxide was used as bleaching agent and pH was 9,the optimal treatment was obtained under the heat treatment at 70 ℃ for 60 min in 6% bleaching solution,the corresponding bamboo whiteness can increase by more than 12%,the bleaching bath solution for bamboo bundles can be reused for 8 to 10 cycles,and its COD could reach 60,000 mg·L^-1. A correlation model between the bamboo whiteness (chromaticity) and the saturated vapor pressure and carbonization time was built. The chromaticity was analyzed by colorimeter.Combined with bamboo carbonization process,the chromatogram of bamboo carbonization process was established to guide the practical production. Compared with the traditional experience of saturated vapor pressure carbonization process,determination of carbonization process by means of prediction,the model can reduce a waste water emission by 11.32%-12.5%.