摘要
研究了双低频超声波/Fenton(US/US/Fenton)工艺降解对氯苯酚的降解历程和动力学.结果表明,对氯苯酚在单独22 kHz,单独40 kHz超声波处理、双频超声波处理(22 kHz和40 kHzUS),Fenton试剂氧化和US/US/Fenton系统协同下的降解均符合表观一级动力学.在单独的单频超声波辐射或者Fenton试剂氧化下对氯苯酚去除率不高,而在复合氧化过程US/US和US/US/Fenton工艺中有显著的提高,表明协同效应存在,对氯苯酚去除的速率常数增强因子分别可达到2.35和2.56.
Though dual-frequency ultrasound/Fenton reagent （US/US/Fenton） process has showed potential application for wastewater treatment, there were only a few reports on degradation kinetics. In this paper, the synergetic kinetics of 4-Chlorophenol degradation in water by using dual-frequency ultrasound（US/US） and US/US/Fenton system were studied. It was found that phenol degradation followed pseudo-first order kinetics reaction under individual single frequency US radiation or Fenton reagent oxidation process, while it significantly enhanced in the combined US/US and US/US/Fenton system. This indicated that there exist synergetic effects in the US/US and US/US/Fenton process and it was found that the promoted factor for 4-Chlorophenol degradation rate constant are about 2.35 and 2.56 respectively.
出处
《浙江工业大学学报》
CAS
2005年第5期555-559,共5页
Journal of Zhejiang University of Technology
基金
浙江工业大学校级科研项目资助基金(20040004)
