关键词：
非均相Fenton;罗丹明B;离子交换树脂;降解
摘 要：
采用浸渍法制备负载有Fe(Ⅲ)/Cu(Ⅱ)、Fe(Ⅲ)和Cu(Ⅱ)的阳离子交换树脂(R)催化剂,在H_2O_2和节能灯照射条件下降解罗丹明B(Rh B)模拟印染废水。在H_2O_2浓度为20 mmol/L、曝气、30℃和光照条件下,0.05 g/L Fe(Ⅲ)/Cu(Ⅱ)/R催化剂在29 h内将20 mg/L的Rh B溶液降解完全,30 h后COD去除率为73.7%,且Fe(Ⅲ)/Cu(Ⅱ)/R催化剂具有最大的反应速率。Fe(Ⅲ)/Cu(Ⅱ)/R催化剂的稳定试验和重复试验表明,该催化剂在78 h光催化反应后,溶液中含有的Fe(Ⅲ)和Cu(Ⅱ)浓度分别为0.5和0.2 mg/L,且在连续使用6次后仍具有较高的催化效率。Fe(Ⅲ)/Cu(Ⅱ)/R催化剂对Rh B的较高催化性能主要归因于铁、铜离子间的协同作用及光照的共同作用。
译 名：
Resin Supported Fe(Ⅲ)/Cu(Ⅱ) Heterogeneous Photo Fenton System for Rhodamine B Simulated Wastewater Degradation
作 者：
LIU Bao-feng;WANG Li;TONG Chen;College of Environmental Science, China University of Geosciences (Wuhan);
关键词：
heterogeneous Fenton;;Rhodamine B;;ion exchange resin;;degradation
摘 要：
The catalysts of Fe(Ⅲ)/Cu(Ⅱ), Fe(Ⅲ) and Cu(Ⅱ) with cation exchange resin(R) as support were prepared by a wet impregnation method and then employed for the degradation of Rhodamine B(Rh B) with H_2O_2 under UV-Vis light irradiation. 20 mg/L Rh B was completely oxidized by 0.05 g/L Fe(Ⅲ)/Cu(Ⅱ)/R catalyst after 29 h with 20 mmol/L H_2O_2,aeration, 30 ℃ and UV-Vis light irradiation, the COD removal efficiency was 73.7% after 30 h. The Rh B degradation follows the zero-order dynamic equation and the reaction rate constant of Fe(Ⅲ)/Cu(Ⅱ)/R was the biggest. The amount of Fe(Ⅲ)and Cu(Ⅱ) ions in the solution were nearly achieved 0.5 and 0.2 mg/L after the catalyst 78 h photocatalytic reaction,respectively,and the Fe(Ⅲ)/Cu(Ⅱ)/R catalyst still had a good catalytic activity after reusing for 6 times. The high catalytic activity of the Fe(Ⅲ)/Cu(Ⅱ)/R catalyst was attributed to the cooperation effect of Fe(Ⅲ) and Cu(Ⅱ) with light.
