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Enfoque UTE

On-line version ISSN 1390-6542Print version ISSN 1390-9363


TERAN, Gina; POSLIGUA, Paola  and  BANCHON, Carlos. Fenton's reagent minimum dosage for remediation of water contaminated with dyes. Enfoque UTE [online]. 2015, vol.6, n.3, pp.65-80. ISSN 1390-6542.

Effluents from the textile industry not only represent a latent threat to biodiversity on our planet but also to humans due to the pollution generated by industrial dyes. In this study a Fenton process was evaluated for the decoloration of water contaminated with yellow 160, blue 81 and red 190 with an initial concentration of 3300 mg.L-1 and a chemical oxygen demand of 1719 mg.L-1. Changes in pH and molar doses of ferrous sulfate and hydrogen peroxide were evaluated. The Fenton process allowed 99,9% removal of organic matter and 100% removal of turbidity when it worked at pH 3,5 and molar dose Fe+2/ H2O2 between 1:3 and 1:5. By spectrophotometric scanning and measurement of redox potential, it was shown that the quality of decontaminated water resembled the ultrapure water type I.

Keywords : azoic dyes; oxidation-reduction potential; Pelileo; textile industry..

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