摘要
多环芳烃是一类具有致癌特性且采用常规处理工艺难以有效去除的有机污染物,本论文研究了Fenton试剂对水体中多环芳烃污染物芴、菲、蒽的去除效果,对影响多环芳烃去除率的几种因素包括反应时间、FeSO4浓度、H2O2浓度及pH值进行了探讨。结论表明当反应时间为60min,FeSO4和H2O2浓度分别为3.0和20mmol.L-1,pH值为4.0时,3种多环芳烃的去除效果最佳,去除率分别达到78.3%、82.5%和99.0%。比较了Fenton试剂法、UV/Fenton法和UV/草酸铁/H2O2法对多环芳烃的去除,结论表明这3种芬顿系统对多环芳烃的去除率相差不大,且均能获得较满意的去除效果。
Polycyclic aromatic hydrocarbons （PAHs） represent a kind of carcinogenic organic pollutants, which are difficult to be eliminated by conventional treatment processes. The removal efficiency of three PAHs, fluorene, phenanthrene and anthracene by Fenton＇s regent was investigated in this study. Several factors including reaction time, concentration of FeSO4 and H2O2 and pH were discussed to determine their effects on the removal ratio of PAHs, the results revealed when the reaction time is 60 minutes, concentrations of H2O2 and FeSO4 is 3. 0mol·L^-1 and 20mmol·L^-1 respectively, and pH is 4.0, the PAHs can be removed most effectively, and their maximum removal ratio were 78.3% ,82.5% and 99.0% . Besides, the removal efficiency of fluorene, phenan threne and anthracene by Fentong reagent, UV/Fenton and UV/Fe （C2O4） 33 -/H2O2 were compared and the results showed that all of these techniques has satisfactory removal effects on PAHs.
出处
《化学工程师》
CAS
2008年第3期42-45,共4页
Chemical Engineer
