Photocatalysis of Orange - 84 Reactive dye using a sunlight collector
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Date
2007
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Introduction. Reactive Orange 84 is a dye used in
the textile industry, specifically in cotton clothing,
which generates a hightly colored residual water,
because only 65% of this water is impregnated
and the 35% remaining hydrolyses in water,
generating a highly colored waste water Objective.
To study photocatalysis of Reactive Orange 84 by
the use of a sunlight collector and titanium oxide
as a catalyst. Materials and methods. A sunlight
collector made up by three modules (each one
made up by eight glass Schott-Duran pipes) was
used. Each glass pipe is 48 cm of external
diameter and 150 cm long and also contains an
aluminum sheet, which allows the reflection of
sunlight. The whole device had a re-circulation
bomb and a tank. The sunlight collector had an
inclination of 6 degrees in comparison with the
floor and was facing north because it must be
located according to the geographic position of
the place. Only one condition was modificated for
each experiment with the objective of studying its
influence in the dye's degradation. In this research
work we show different combinations of hydrogen
peroxide, titanium dioxide and air, used in the
photo catalysis of the 84 Orange reactive and
waste water samples from textile industry. Results.
The optimal concentrations found for 84 orange
reactive in a 340 mg/lL concentration are: 40 mg/L
of titanium dioxide and 2 mL/L of hydrogen peroxide with no air injection. Conclusion: With an appropriate
quantity of titanium dioxide and a well calculated
concentration of hydrogen peroxide, very good
concentration percentages of the 84 orange reactive
and colored waste waters are obtained, besides of
high mineralization percentages.
Description
Keywords
Fotocatálisis, Corporación Universitaria Lasallista, Naranja reactivo 84, Aguas residuales coloreadas, Aguas residuales industriales, Tratamiento de aguas residuales, Dióxido de titanio (TIO2)