Abstract

MANRIQUE-LOSADA, LIS; QUIMBAYA-NANEZ, CAROLINA  and  TORRES-PALMA, RICARDO ANTONIO. Elimination of fluoxetine present in contaminated water using photochemical processes of advanced oxidation and sunlight. Rev.EIA.Esc.Ing.Antioq [online]. 2019, vol.16, n.32, pp.27-42. ISSN 1794-1237.  https://doi.org/10.24050/reia.v16i32.1081.

The degradation of fluoxetine was studied by means of three advanced oxidation photochemical processes: photo Fenton (FFS), photo electro Fenton (FEFS) and photocatalysis with TiO2 (FCS), mediated by solar radiation. Experiments were run with 100 mL solutions in a reaction vessel and in the case of FEFS, the reactor was equipped with an IrO2 / RuO2 anode and an air diffusion graphite cathode for continuous peroxide production. In all cases, degradation, the mineralization of fluoxetine and toxicity were monitored. The FFS process showed the highest speed of degradation and mineralization, as well as the greater efficiencies in the degradation and mineralization. The pH in the FFS process defined the scope of the mineralization, evidencing that acidic pH achieves greater mineralization by avoiding the formation of complexes and hydroxides typical of a higher pH. The FCS process presents high efficiency, but slow kinetics. Beer yeast toxicity decreases as degradation byproducts are generated in all evaluated processes.

Keywords : Fluoxetine; Solar photo-Fenton; Solar photo-electro-Fenton; Photocatalysis by TiO₂; Sunlight.

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