INVESTIGADORES
ALFANO Orlando Mario
congresos y reuniones científicas
Título:
Scaling-up of Reactors for the Homogeneous Photo-Fenton Degradation of a Herbicide
Autor/es:
CONTE, L.O.; SCHENONE, A.V.; ALFANO, O.M.
Lugar:
Strasbourg
Reunión:
Congreso; 9th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA9); 2016
Resumen:
Ascaling-up study of the homogeneous photo-Fenton degradation of herbicide2,4-dichlorophenoxyacetic acid (2,4-D) is presented. First, different sourcesof iron were studied: sulphate, oxalate and citrate complexes. The results wereevaluated by means of photonic and quantum efficiencies of degradation. Theferrioxalate system presented the best performance for conditions of pH = 5. Consequently,a kinetic model derived from a simplified reaction sequence is proposed usingthe ferrioxalate complex for pH 5. For this purpose, a lab-scale reactor withartificial sunlight was employed. Kinetic parameters were estimated and the validatedkinetic model was used to predict temporal variations of the concentrations of2,4-D, 2,4-dichlorophenol (main reaction intermediate), hydrogen peroxide andoxalate ion in a pilot-plantsolar reactor.