摘要
在光助非均相Fenton体系中,采用一种稀土铈铁复合(CeFe)材料作为催化剂,并探讨了该反应体系在不同条件下活性艳红X3B的脱色效果。结果表明:该光助非均相Fenton反应在前10min符合一级反应动力学。采用掺杂0.08mol/L铈制备的CeFe材料对活性艳红X3B具有最佳的脱色效果,在pH3.0、H2O234mg/L、UV253.7nm条件下,10min内该反应体系速率常数k达到0.2456min-1,明显高于相同条件下的UV/H2O2(0.0446min-1)、UV/CeFe(0.0306min-1)体系的速率常数。
Discoloration of reactive brilliant red X-3B was studied by using the iron oxides doped with cerium (Ce-Fe) as a heterogeneous catalyst in the presence of H_2O_2 and UV light (253.7 nm). Experimental results show that the heterogeneous photo-Fenton reaction was in conformity with first-order kinetics equation within 10 minutes, and that the discoloration of the dyes relates to the doping dose of cerium for Ce-Fe preparation, pH and H_2O_2 concentration. The optimal discoloration for 100 mg/L RBR X-3B was obtained under the condition that the doping dose of cerium, pH and H_2O_2 concentration were 0.08 mol/L, 3.0 and 34 mg/L respectively. The reaction rate constant of this reaction is 0.2456 min -1,and excels that of UV/H_2O_2 and UV/Ce-Fe system under the same reaction condition.
出处
《环境污染治理技术与设备》
CAS
CSCD
北大核心
2005年第6期7-11,共5页
Techniques and Equipment for Environmental Pollution Control
基金
国家高技术研究发展计划"863"项目(2002AA601300)
国家自然科学基金青年基金项目(20207013)
