紫外光-超声波耦合降解水溶液中苯酚和氯苯的研究  

Effect of UV / US coupling on degradation of phenol and chlorobenzene

作　　者：杨涛[1] 林逢凯[1] 马海南[1] 杨磊[2] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]华东理工大学化学与分子工程学院,上海200237

出　　处：《现代化工》2014年第11期87-90,共4页Modern Chemical Industry

摘　　要：选取苯酚和氯苯分别作为亲水性和疏水性有机物代表,研究了紫外光、超声波和紫外光-超声波耦合3种降解方式、初始p H和初始浓度对苯酚和氯苯降解的影响。结果表明:苯酚紫外光降解效果更优,而氯苯超声波降解效果更优,两者耦合比单独使用降解效果更好。在中性条件下,苯酚的降解率最大;溶液的初始p H对氯苯降解率的影响不明显。2种有机物的降解与初始浓度呈负相关性,在同一浓度下,苯酚降解效果较优。Phenol and chlorobenzene are selected as the representatives of hydrophilic and hydrophobic organic compounds in this study. The effects of degradation manners such as ultraviolet （ UV）, ultrasound （US） and mixed UV/ US, initial pH and initial concentration on their degradation are investigated. The results indicate that, for the hydrophilic organic phenol, the degradation efficiency of UV is better than US. For the hydrophobic organic chlorobenzene, the degradation efficiency of US is better than UV. However, better degradation efficiency of UV/US coupling process is achieved compared with UV and US. Neutral condition is favorable for phenol degradation, and initial pH has little effect on chlorobenzene degradation. The degradation effieiencies and the reaction rate constants of phenol and chlorobenzene decrease with the increasing of initial concentrations. Under the same initial concentrations, the degradation effieiencies of phenol are all higher than those of chlorobenzene.

关 键 词：紫外光 超声波 苯酚 氯苯 

分 类 号：X703.1[环境科学与工程—环境工程]