摘要
文章以偶氮染料甲基橙为研究对象,进行了超声波降解实验研究。实验结果表明,随着超声时间的延长,甲基橙模拟废水的色度和pH值不断地减小,CODCr的降解率增大;通过添加自由基清除剂对比的实验,推测出超声波降解甲基橙主要是通过.OH等自由基氧化作用;HPLC-MS测量分析结果表明,超声处理后的甲基橙废水中没有检测到稳定的中间产物,甲基橙最终被氧化成二氧化碳和水。
Sonochemical degradation of methyl orange,a kind of azo dye,was carried out.The experimental results show that the color shade of analogous wastewater and the pH value continuously drop with the extension of ultrasonic time,while the decolorization rate of CODCr rises.The experiment about the presence and absence of radical scavenger indicates that ultrasonic degradation of methyl orange is mainly due to·OH and other free radicals peroxidation.The process of sonochemical degradation is inspected by HPLC-MS,but stable intermediate products are not found,which indicates that methyl orange is eventually oxidized to carbon dioxide and water.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第10期1563-1566,共4页
Journal of Hefei University of Technology：Natural Science
基金
合肥工业大学科学研究发展基金资助项目(2009HGXJ0091)
关键词
超声降解
甲基橙
中间产物
ultrasonic degradation
methyl orange
intermediate product
