水力空化联合H_2O_2降解壳聚糖的研究  

Degradation of Chitosan by Hydrodynamic Cavitation and H_2O_2

作　　者：何冰[1] 张淑君[1] 信志强[1] 张德里 

机构地区：[1]河海大学力学与材料学院,南京210098

出　　处：《重庆理工大学学报（自然科学）》2014年第11期52-56,共5页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金青年基金资助项目(11302071)

摘　　要：利用水力空化装置对壳聚糖溶液进行了降解实验。分析了壳聚糖浓度、入口压力、p H值、温度、H2O2浓度等不同因素对壳聚糖溶液降解的影响。结果表明:水力空化对壳聚糖的降解程度随壳聚糖浓度的增加而减小,随着入口压力及水温的增加而增大;在一定条件下,水力空化对壳聚糖的降解存在着一个最佳的p H值;水力空化联合H2O2强化处理大大增强了降解的效果。该方法既能减少氧化剂的投放,也能提高降解的效率。The degradation experiment of chitosan solution was systematically investigated with the e-quipment of hydrodynamic cavitation and the factors affecting the degradation,such as the concentra-tion of chitosan,the inlet pressure,the PH,the temperature and the concentration of H2 O2 and so on were analyzed. The results show that the degradation degree of the chitosan is lower with the increase of the chitosan solution concentration,and the degradation degree increases by increasing the inlet pressure and the temperature. Under certain conditions,there exist an optimal pH value to the degrada-tion of hydrodynamic cavitation on chitosan. Combining hydrodynamic cavitation and H2 O2 to degrade chitosan is largely strengthened the degradation effect,which can not only reduce the dosage of oxida-tion,but also improve the efficiency of the degradation.

关 键 词：水力空化 壳聚糖 过氧化氢 联合 

分 类 号：TS195.5[轻工技术与工程—纺织化学与染整工程]