期刊论文

Xia, L.-S.(xls1966@hotmail.com)

中文

化学工程

1005-9954

2007

35

7

58-62

10.3969/j.issn.1005-9954.2007.07.017

本校为其他机构

采用US/Fe~(3+)/H_2O_2体系超声催化降解甲基橙,考察了超声波功率、Fe~(3+)初始质量浓度、H_2O_2用量、甲基橙溶液的初始质量浓度及初始pH值对超声催化降解甲基橙的影响,初步探讨了其降解动力学规律.结果表明,US/Fe~(3+)/H_2O_2体系能有效降解甲基橙,且超声波与Fenton试剂对甲基橙废水的降解存在强烈的协同作用;在pH=3、超声波功率500 W、Fe~(3+)和H_2O_2的初始质量浓度分别为30 mg/L和150 mg/L时,对含30 mg/L的甲基橙溶液降解120 min,其去除率达到99.5%;甲基橙的超声催化降解符合一级反应动力学规律,且甲基橙的一级反应速率常数随其初始质量浓度增大而降低.

US/Fe3+/H2O2 system was used for degradation of methyl orange in water. The influences of ultrasonic (US) power, Fe3+ initial mass concentration, H2O2 mass concentration and the initial mass concentration and pH of methyl orange on degradation efficiency were investigated. The degradation kinetics was discussed. The results show that the synergistic effect on degradation of methyl orange in water by US/Fe3+/H2O2 is evident; the degradation efficiency of 30 mg/L methyl orange solution can reach 99.5% after 120 min irradiation under the conditions of pH=3.0, US power 500 W, initial mass concentr...