6533b834fe1ef96bd129d77a

RESEARCH PRODUCT

Combination of ozonation and photocatalysis for purification of aqueous effluents containing formic acid as probe pollutant and bromide ion

G. Camera-rodaVincenzo AugugliaroVittorio LoddoFrancesco ParrinoGiovanni Palmisano

subject

BromidesTime FactorsEnvironmental EngineeringFormatesTime FactorAdvanced oxidation processes; Bromate; Ozonation; Photocatalysis; Photocatalytic ozonation; Water purification; Bromates; Bromides; Catalysis; Formates; Ions; Kinetics; Oxidation-Reduction; Ozone; Time Factors; Water Pollutants Chemical; Ultraviolet Rays; Waste Disposal Fluid; Water Purification; Water Science and Technology; Waste Management and Disposal; Pollution; Ecological ModelingUltraviolet RaysFormic acidInorganic chemistryPortable water purificationWaste Disposal FluidCatalysisCatalysiCatalysischemistry.chemical_compoundOzonePhotocatalysiBromideOzonationIonWaste Management and DisposalBromateWater Science and TechnologyCivil and Structural EngineeringIonsKineticPhotocatalytic ozonationSettore ING-IND/24 - Principi Di Ingegneria ChimicaAqueous solutionWater purificationBromatesEcological ModelingFormateBromatePollutionKineticschemistryUltraviolet RayBromidePhotocatalysisOxidation-ReductionWater Pollutants ChemicalAdvanced oxidation processeWaste disposal

description

The treatment by advanced oxidation processes (AOPs) of waters contaminated by organic pollutants and containing also innocuous bromide ions may generate bromate ions as a co-product. In the present work heterogeneous photocatalysis and ozonation have individually been applied and in combination (integrated process) to degrade the organic compounds in water containing also bromide anions. The results show that: i) the sole photocatalysis does not produce bromate ions and in the case of its presence, it is able to reduce bromate to innocuous bromide ions; ii) the integration of photocatalysis and ozonation synergistically enhances the oxidation capabilities; and iii) in the integrated process bromate ions are not produced as long as some oxidizable organics are present. © 2013 Elsevier Ltd.

https://doi.org/10.1016/j.watres.2013.12.001