摘要
研究比较Fenton试剂和类Fenton试剂氧化处理地下水中苯、甲苯、乙苯和二甲苯(BTEX)的效果及动力学。结果表明,Fenton氧化处理BTEX较类Fenton效果好,且反应过程中体系均处于强氧化环境,pH值维持在3左右;Fenton和类Fenton氧化去除BTEX过程均符合二级反应动力学方程:1/C=kt+1/C0,且Fenton和类Fenton氧化去除BTEX的平均半衰期分别为0.057 h和0.642 h,氧化处理过程速率常数大小均为乙苯>二甲苯>甲苯>苯。
The removal efficiency and the kinetics of oxidation treatment of benzene,toluene,ethyl benzene and xylenes（BTEX）contaminated groundwater by Fenton＇s reagent and Fenton-like reagent were investigated and compared in the groundwater.The results indicated that Fenton＇s reagent has a better removal effect on BTEX than Fenton-like reagent.Moreover,both Fenton and Fenton-like reaction systems were in strong oxidation environments and the pH maintained around 3 during the whole processes.The oxidation processes of BTEX by Fenton＇s reagent and Fenton-like reagent both followed the second order reaction kinetic equation： 1/C=kt＋1/C0.The average half-lives of BTEX treated by Fenton＇s reagent and Fenton-like reagent were 0.057 h and 0.642 h respectively.The order of the rate constants during the oxidation processes was ethyl benzenexylenestoluenebenzene.
出处
《环境工程学报》
CAS
CSCD
北大核心
2011年第5期992-996,共5页
Chinese Journal of Environmental Engineering
基金
国家"863"高技术研究发展计划重大项目(2008AA06A410)
吉林大学"985工程"研究生创新基金资助项目(20080113)
