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] 张德里 

机构地区：[1]河海大学力学与材料学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2014年第5期109-112,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家青年基金(11302071)

摘　　要：本文利用水力空化装置降解壳聚糖,研究了壳聚糖浓度、入口压力、pH值、温度、H2O2浓度等不同因素下对壳聚糖溶液降解的影响.实验结果表明,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pH值;水力空化联合H2O2强化处理大大增强了降解的效果,其联合既能减少氧化剂的投放,也能提高降解的效率.The degradation of chitosan was systematically investigated with hydrodynamic cavitation enhanced by oxidation of H2 O2. The effects of the concentration of chitosan, the inlet pressure, pH value, the temper- ature and the concentration of H2 O2 on the degradation of chitosan were evaluated by using hydrodynamic cav- itation. The results show that the degradation of chitosan by using hydrodynamic cavitation decreases with in- creasing the chitosan solution; and the rate of chitosan degradation increases with the inlet pressure increas- ing. So does the factor of the temperature. The degradation effect of chitosan can be improved when the pH is at a optimum condition. Combining hydrodynamic cavitation and H2O2 to degrade chitosan largely strengthens the degradation; It not only reduce the dosage of oxidation 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]