复合光催化材料的制备及对染料废水的处理研究

Preparation of composite photocatalytic materials and treatment of dye wastewater

将吸附法与光催化氧化法结合起来,以水热法由柚子皮生物活性炭(AC)、四氧化钛制备复合光催化剂(Ti-AC),研究钛负载量、反应时间、pH、复合光催化剂投加量、溶液初始浓度等对亚甲基蓝(MB)废水处理效果的影响。结果表明,复合光催化剂1Ti-AC投加量在2.8 g/L,pH为7,温度25℃,吸附时间为5 h时,对MB溶液的去除率为94.17%,具有良好的去除效果。吸附过程呈Freundlich模型,为多分子层吸附。

Discussing the combined adsorption and photocatalytic oxidation,the composite photocatalyst(Ti-AC)was prepared from grapefruit activated carbon and titanium tetrachloride by hydrothermal method,titanium study load,reaction time,pH,composite photocatalyst dosing quantity,the initial solution concentration on MB wastewater treatment effect.The results show that the compound photocatalyst 1 Ti-AC has a good removal efficiency of 94.17%for MB solution at the dosage of 2.8 g/L,pH of 7,temperature of 25℃,and adsorption time of 5 h.The process of adsorption was Freundlich model,multi-molecular layer adsorption.