LED光化学反应器在环境化学实验教学中的应用

Application of LED Photochemical Reactor in Teaching Environmental Chemistry Laboratory

介绍了一种新型LED光化学反应器的设计思路及装置,并将其分别应用于Cr(Ⅵ)光还原和有机砷光氧化两个环境化学实验教学中。结果表明:在波长394 nm的LED光反应器中,Cr(Ⅵ)光还原效率高达95%;在波长664 nm的LED光反应器中,有机砷氧化效率大于80%;应用实验说明该反应器具有良好的稳定性,且安全可靠,完全能够满足环境光化学实验教学的要求。

This paper introduced the design method and device of a novel LED photochemical reactor,and applied the reactor to Cr（Ⅵ） photo-reduction and photooxidation of organic arsenic in environmental chemistry laboratory teaching. The results showed that the efficiency of Cr（Ⅵ） photo-reduction was 95% in LED photochemical reactor with 394 nm irradiation, and the efficiency of photooxidation of organic arsenic was more than 80% in reactor with 664 nm irradiation. The application experiments showed that the reactor had good stability, safety and reliability, and could meet the requirements of environmental photochemistry laboratory teaching.