مشخصات پژوهش

صفحه نخست /Degradation of ...
عنوان
Degradation of Pentachlorophenol inAqueous Solutionby the UV/ZrO 2/H 2O2 Photocatalytic Process
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
ZirconiumDioxide, Hydrogen Peroxide, Ultraviolet Radiation, Pentachlorophenol Removal
چکیده
Pentachlorophenol (PCP), which is one of the resistant phenolic compounds, has been classified in the category of EPA’s priority pollutants due to its high toxicity and carcinogenic potential. Therefore, its removal fromwater andwastewater is very important. Variousmethodshavebeenstudied for removing the compound, amongwhichadvancedoxidationprocesses (AOPs)haveattracted muchattentionbecause of ease of applicationandhigh efficiency. Thus the aimof this studywas to investigate the efficiency of the UV/ZrO2/H2O2 process, as an AOP, for PCP removal from aquatic environments. The effects of several parameters such as ultraviolet (UV) exposuretime, initial PCPconcentration, pH, concentrationof zirconiumdioxide (ZrO2)nanoparticles, andH2O2 concentration were studied. Kinetics of the reactionwas also detected. The concentration of the stated materials in the samples was determined using a spectrophotometer at 500 nm. The results showed that the highest efficiency (approximately 100%) was reached at opti-mized conditions of pH6, contact time of 30 minutes, initial PCP concentration of 20 mg/L, the nanoparticles concentration of 0.1 g/L andH2O2 concentrationof 14.7mM/L. Also, theprocess followed thefirst order kinetics reaction. The obtained results illustrated that the UV/ZrO2/H2O2 process has a high ability in removing PCP
پژوهشگران محمدرضا سمرقندی (نفر اول)، علیرضا رحمانی (نفر دوم)، محمدتقی صمدی (نفر سوم)، مجید کیامنش ( دانشجوی بین الملل) (نفر چهارم)، قاسم آذریان (نفر پنجم)