Chemical Engineering & Technology · 2001 · 113 citations · 0 references
Natural SciencesChemical EngineeringChemistryReaction EngineeringSurface ScienceWater TreatmentChemical Kinetics ModelingKinetic ModelingPhotocatalysisPhotochemical KineticsPhotochemistryPhotoelectrochemical MaterialsActivation EnergyLangmuir-hinshelwood KineticsLangmuir-hinshelwood MechanismPhenol RemovalPhotocatalytic DegradationPhotocatalytic KineticsPhotocatalytic TreatmentPseudo-first-order Kinetics
In this study the photocatalytic destruction of phenol in an aqueous suspension of illuminated TiO2 was investigated. The experiments were carried out using a Pyrex annular photoreactor. The effects of some parameters such as pH, loading of TiO2, flow rate of O2 and temperature on the photocatalytic destruction rate of phenol were examined. It was observed that the flow rate of O2 has no considerable effect on the destruction of phenol over the range of 2–3.5 L min–1. The photodestruction of phenol followed the pseudo first-order kinetics of the Langmuir-Hinshelwood model giving an activation energy of 16.2 kJ mol–1.