Comparison of different advanced oxidation processes for phenol degradation.
Advanced Oxidation Processes (O3, O3/H2O2, UV, UV/O3, UV/H2O2, O3/UV/H2O2, Fe2+ /H2O2 and photocatalysis) for degradation of phenol in aqueous solution have been studied in earlier works. In this paper, a comparison of these techniques is undertaken: pH influence, kinetic constants, stoichiometric coefficient and optimum oxidant/pollutant ratio. Of the tested processes, Fenton reagent was found to the fastest one for phenol degradation. However, lower costs were obtained with ozonation. In the ozone combinations, the best results were achieved with single ozonation. As for the UV processes, UV/H2O2 showed the highest degradation rate.
Esplugas
Santiago
S
Departamento de Ingenieria Química y Metalurgia de la Universidad de Barcelona, Spain.
Giménez
Jaime
J
Contreras
Sandra
S
Pascual
Esther
E
Rodríguez
Miguel
M
D002384:Catalysis; D004202:Disinfectants / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D016877:Oxidants / Q000737:chemistry; D010083:Oxidants, Photochemical / Q000737:chemistry; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry; D019800:Phenol / Q000737:chemistry*; D010777:Photochemistry; D018508:Water Purification / Q000379:methods*
D004202:Disinfectants; D016877:Oxidants; D010083:Oxidants, Photochemical; D019800:Phenol; D010126:Ozone; D006861:Hydrogen Peroxide