低强度紫外线催化降解活性艳红X-3B溶液研究

Study on photocatalytic degradation of reactive red X-3B by low intensity UV-TiO_2 system

研究了低强度紫外线对活性艳红X 3B溶液的处理效果 ,考察了紫外线波长、溶液pH、起始浓度、催化剂用量、温度及曝气条件对染料降解的影响。结果表明 ,36 5nm紫外线 (UV3 65nm)的处理效果明显优于 2 5 4nm紫外线 (UV2 54nm) ,反应最适pH为 3 0～ 5 0 ,最佳TiO2 投加量为 2 0g/L ,最适温度为 4 0℃ ,通入空气或氧气均能加速活性艳红X 3B的降解。在上述条件下 ,起始浓度为 5 0mg/L的活性艳红X 3B在 1 5

The photocatalytic degradation behaviors of reactive red X 3B by low intensity UV TiO 2 systems were studied. The influencing factors, such as wavelength, pH, treatment time, initial concentration, temperature, catalyst dosage and aeration were examined. The results showed that the optimum pH was 3 0～5 0; the optimum temperature was 40 ℃; the optimum dosage of TiO 2 was about 2 0 g/L; aeration would accelerate the degradation rate of the reactive red X 3B.