Degradación de aguas residuales de la industria textil por medio de fotocatálisis
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Date
2005
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Introduction: For dye degradation, different
Technologies of tertiarty treatment have been used
(nanofiltration, microfiltration, electrocoagulation),
the advanced processes (H2O2/UV and heterogeneous
and homogeneous photo catalysis) and
combined treatments of photo catalysis and electrolytic
oxidation. In many cases, the application of
such technologies has brought a diminution in the
concentration of dye in the treated effluents.
Objective: To evaluate photo degradation sensitized
with titanium dioxide for a dye used in textile
industries. Materials and methods: Rehearsals
were made in a parabolic composed cylinder sunlight
collector, which is made up by 8 glass pipes
and an aluminium sheet. This allows the reflection
of ultraviolet radiation of sunlight. The device had a
recirculation pump and a tank. The sunlight collector
had a 6 degrees inclination with respect to the
ground. The glass pipes were united with PVC
connections. Assemblies were made during a 8
hours period of radication, and colour and COT
analysis were made every hour. Results: Best TiO2
concentrations are 100 mg/L and 2% of H2LO2,
obtaining a degradation rate of approximately 98%.
Conclusions: Recoltive red dye can be degraded
with good combinations between titanium dioxide
and hydrogen peroxide, obtaining also good
mineralization percentages in the same dye.
Description
Keywords
Fotocatálisis, Aguas residuales industriales, Aguas residuales, Colorante rojo recoltive, Tratamiento de aguas residuales, Corporación Universitaria Lasallista, Dióxido de titanio (TIO2), Aguas residuales coloreadas, Contaminación del agua