水力空化强化二氧化氯降解罗丹明B的研究

Study on the Degradation of Rhodamine B by Hydrodynamic Cavitation and Chlorine Dioxide

研究了水力空化技术对罗丹明B的降解,首次引入二氧化氯强化降解的效果。研究表明,入口压力、空化时间、多孔板开孔率以及二氧化氯浓度对罗丹明B降解率存在显著影响。在水力空化强化二氧化氯处理工艺中,罗丹明B的降解率是单独水力空化的3.9倍,是单独使用二氧化氯的2.3倍;并引入动力学,表明单独水力空化、单独二氧化氯、水力空化强化二氧化氯三种工艺符合拟一级反应动力学,且水力空化强化二氧化氯降解罗丹明B溶液时,两种工艺存在协同效应。

In the corrent work,the degradation of Rhodamine B was investigated using hydrodynamic cavitation operated individually and combination with oxidizing agent chlorine dioxide for the first time. The results showed that inlet pressure, cavitation time, opening rate of orifice plates and chlorine dioxide concentration had great effect on the extent of degradation. Combination hydrodynamic cavitation with chlorine dioxide for the degradation of damine B was 3.9 times more than that using hydrodynamic cavitation alone, and 2. 3 times more than that using of chlorine dioxide. The kineticswaS also studied. Depending on obtained results, it was proved that the process followed pseudo-first order kinetics. And in the precess of combination of Hydrodynamic cavitation chlorine dioxide, they existed synergistic effect. Rhoonly three with