Photocatalytic Degradation of Ibuprofen Using TiO<sub>2</sub> and Ecotoxicological Assessment of Degradation Intermediates against <i>Daphnia similis</i> — Oak Academic Publishing
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Photocatalytic Degradation of Ibuprofen Using TiO<sub>2</sub> and Ecotoxicological Assessment of Degradation Intermediates against <i>Daphnia similis</i>
Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
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Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
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Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
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Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
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Natural Resource Institute, Universidade Federal de Itajubá, Itajubá, Brazil
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Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
1 Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
2 Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
3 Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
4 Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
5 Natural Resource Institute, Universidade Federal de Itajubá, Itajubá, Brazil
6 Physic and Chemistry Institute, Universidade Federal de Itajubá, Itajubá, Brazil
Several pharmaceutical compounds have been detected in natural aqueous systems and ibuprofen (IBF), one of the most consumed medicament, has been detected in many countries. The degradation efficiency of IBF under TiO 2 /UV radiation was evaluated. Optimum degradation results were observed using 20 mg·L -1 of TiO 2 , pH 7.8 and 5 mg ·L -1 of IBF. Under these experimental conditions total IBF removal was achieved in less than 60 min of irradiation. Although total IBF concentration was observed, the total mineralization of the compound was not achieved. The by-products generated during TiO 2 /UV reaction showed to be more toxic against Daphnia similis than the initial IBF present in aqueous solution.
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