Mineralización del colorante Tartrazina mediante un proceso de oxidación avanzada
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Fecha
2009
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Editor
Corporación Universitaria Lasallista
Resumen
Introduction. The importance of treating waste
waters is based on removing the contaminants
and the mineralization of the components into
compounds harmless for the environment, aiming to
reduce the impact and the environmental misbalance
generated by the presence of undesired substances
in the aqueous ecosystems. Objective. To evaluate
the mineralization of the Tartrazine dye by the use of
heterogeneous photo catalysis with titanium dioxide
and an ultra violet light lamp. Materials and methods.
An experimental randomized factorial design was
used. In the experiments, an ultra violet light lamp,
a glass reservoir to store the aqueous solution
sample and a pump to re-circulate the solution,
were used. The mineralization was determined by
the ultra violet /visible espectrophotometry, using
sulfates for the parameter, and the removal of
sulfates was calculated at different concentration
times. Results. Mineralization percentages of
the Tartrazine dye above 92.8% were achieved.
Nevertheless, when technical and economic
factors were analyzed, it was considered that
the most adequate experimental combination to
achieve the dye’s mineralization corresponds
to a combination of 0mg/L of TiO2 and 0,2 % v/
v of the hydrogen peroxide oxidation agent,
which represents a chemical oxidation process.
Conclusion. Advanced oxidation processes, such
as chemical oxidation with hydrogen peroxide, are
beneficial for the mineralization of the Tartrazine
dye.
Descripción
Palabras clave
Fotodegradación, Corporación Universitaria Lasallista, Tartrazina, Aguas residuales, Contaminación del agua, Oxidación, Dióxido de titanio (TIO2), Colorante azoico, Mineralización, Tratamiento de aguas residuales