INVESTIGADORES
ALFANO Orlando Mario
artículos
Título:
Decomposition of Formic Acid in a Water Solution Employing the Photo-Fenton Reaction
Autor/es:
ROSSETTI, G.H.; ALBIZZATI, E.D.; ALFANO, O.M.
Revista:
INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH
Editorial:
AMER CHEMICAL SOC
Referencias:
Lugar: Washington; Año: 2002 vol. 41 p. 1436 - 1444
ISSN:
0888-5885
Resumen:
The
photodegradation of a specific organic pollutant in aqueous solution using the
photo-Fenton system has been modeled and experimentally verified. Kinetic and
reactor models accounting for the decomposition rates of formic acid (the model
compound) and hydrogen peroxide were developed. The experimental work was
performed in a flat-plate, well-stirred reactor placed inside a batch recycling
system having a high-flow-rate recirculating pump and a storage tank. The
reactor was irradiated from both sides with two tubular lamps placed at the
focal axis of two cylindrical reflectors of a parabolic cross section. When
predictions of the theoretical model are compared with experimental results, a
good representation of the formic acid and hydrogen peroxide concentration
evolution in a rather wide range of their initial molar concentrations is obtained;
within the range of explored variables, deviations between model predictions
and experimental data were always smaller than 9%. Furthermore, model
predictions and experimental results of the organic compound degradation show
that UV irradiation improves the effectiveness of the Fenton system
significantly. Under the adopted operating conditions, a pollutant conversion
63% greater than that obtained with the dark system was observed.