光催化氧化后四环素的分解率与COD去除率之间关系的探讨

THE INTERRELATION OF DECOMPOSITION EFFICIENCY AND COD REMOVING EFFICIENCY AFTER PHOTODECOMPOSITION OF TETRACYCLINE

以粉状无机半导体（ＺｎＯ）为催化剂，探讨了水溶夜中四环素经光催化氧化后分解率和ＣＯＤ去除率之间的关系。实验表明，在本实验中四环素的分解率和ＣＯＤ去除率之间有较好的正相关性，当反应系统中有足量的活性催化剂和足够的光照时间时，绝大部分四环素将被较彻底地氧化分解成ＣＯ２，这不仅有助于光催化反应机理的研究，也有助于今后在环保中的实际应用。

n this paper,the relation between the photocatalytic decomposition and COD removing efficiencies after using powdered inorganic semiconductor zinc oxide(ZnO)as photocatalyst to decompose the tetracycline aqueous solution with light as energy source was discussed. Most of tetracycline was decomposed into carbon dioxide(CO2)in the reaction system while with the sufficient active catalyst and irradiation time. These results would be contributive not only to study on the mechanism of photocatalysis but also to utilize in environmental protection,and to help the utilization of solar energy as well.