Investigation of persulfate-based AOPs to decontaminate water with a mixture of fluoxetine and levonorgestrel

SOUZA, L.P.; JESUS, J.M.S.; TOMINAGA, F.K.; RAMOS, B.; BORRELY, S.I.; TEIXEIRA, A.C.S.C.

Investigation of persulfate-based AOPs to decontaminate water with a mixture of fluoxetine and levonorgestrel

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Published date:

2022

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SUELI IVONE BORRELY

FLAVIO KIYOSHI TOMINAGA

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IBEROAMERICAN CONFERENCE ON ADVANCED OXIDATION TECHNOLOGIES, 5th

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Abstract

This work reports a study on two forms of persulfate activation (solar irradiation and anodic oxidation-AO) for the degradation of active pharmaceutical ingredients (APIs). A solution containing a mixture of levonorgestrel and fluoxetine ([LNG]0 = 0.29 ± 0.03 mg L-1; [FLX]0 = 5.02 ± 0.34 mg L-1) was treated with persulfate ([PS]0 = 0.07 mol L-1) and irradiated or electrolyzed for 60 min under similar conditions. The results revealed similar decays of APIs in the two activation forms studied, solar/PS (k LNG = 6.6 × 10-2 min-1; k FLX = 7.7 × 10-2 min-1) and AO/PS (k LNG = 7.8 × 10-2 min-1; k FLX = 9.7 × 10-2 min-1), with slightly better results for the electrochemical process. However, acute toxicity accessed with Daphnia similis indicated that AO/PS provided a three-fold increase in the values of toxic units.

Citation

SOUZA, L.P.; JESUS, J.M.S.; TOMINAGA, F.K.; RAMOS, B.; BORRELY, S.I.; TEIXEIRA, A.C.S.C. Investigation of persulfate-based AOPs to decontaminate water with a mixture of fluoxetine and levonorgestrel. In: IBEROAMERICAN CONFERENCE ON ADVANCED OXIDATION TECHNOLOGIES, 5th, November 7-11, 2022, Cusco, Peru. Proceedings... p. 242-243. Disponível em: http://repositorio.ipen.br/handle/123456789/33888. Acesso em: 16 Mar 2025.

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