Use of direct photolysis and H2O2/UV in aqueous solution containing the crystal violet dye
DOI:
https://doi.org/10.14295/holos.v17i1.12211Keywords:
Dye. Photolysis. Hydrogen peroxide. Aqueous solution. Crystal violet.Abstract
In this work, the Crystal Violet (CV) dye discoloration was investigated by direct photolysis and photoassisted peroxidation in a reactor open to the atmosphere under UV irradiation, having as source of radiation a lamp without bulb mercury vapor of 125W E27. The optimal range of photolysis of VC dye was 7,0 x 10-6 mol.L-1, featuring a percentage of discoloration around 12, 37 and 25% larger compared to the other concentrations, and the monitoring of the variation of the Absorbance x Time (min) through the curves confirmed that in fact this was the concentration that most discolored. The effect of H2O2 on discoloration of the aqueous dye solution at 9,0 x 10-6 mol.L-1 was analyzed, and it was concluded that the addition of this oxidant it benefited the photolysis process.Downloads
Published
2017-11-23
How to Cite
Carneiro da Silva, L. R., Lima da Silva, T., Pereira de Araújo, F., Filho, E. C. da S., & Osajima, J. A. (2017). Use of direct photolysis and H2O2/UV in aqueous solution containing the crystal violet dye. Holos Environment, 17(1), 138–148. https://doi.org/10.14295/holos.v17i1.12211
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