TiO2 P25 and Kronos vlp 7000 materials activated by simulated solar light for atrazine degradation
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International Journal of Chemical Reactor Engineering
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Photocatalysis-based technologies have been proposed for the treatment of wastewater containing atrazine
(ATZ), a persistent and recalcitrant pollutant. This study
aims to evaluate and compare the efficiency of TiO2 P25 and
TiO2 modified with carbon (C–TiO2 Kronos vlp 7000) in the
photocatalytic degradation of ATZ in aqueous systems. The
experiments were performed in a tubular photochemical
reactor equipped with a compound parabolic collector (CPC)
irradiated by simulated solar light. The materials were
characterized by X-ray diffraction, infrared spectroscopy,
BET specific surface area, and diffuse reflectance spectroscopy. For TiO2 P25, ATZ removals varied in the range
86–100 % after 120 min of irradiation, although the total
organic carbon (TOC) analyses indicated that no significant
ATZ mineralization occurred (<20 %). C–TiO2 Kronos vlp
7000, on the other hand, was not able to completely remove
ATZ after 120 min of irradiation. In this case, pesticide removals were 37–45 % over 120 min, while C–TiO2 performed
better with regard to ATZ mineralization, with 38 % TOC
removal. Given the low mineralization of atrazine, the
intermediate compounds formed were identified for each
photocatalytic material.
Como referenciar
MOYA, MURILO T.M.; ARAUJO, LEANDRO G. de; LOPES, FERNANDO S.; TEIXEIRA, ANTONIO C.S.C. TiO2 P25 and Kronos vlp 7000 materials activated by simulated solar light for atrazine degradation. International Journal of Chemical Reactor Engineering, v. 21, n. 10, p. 1211-1223, 2023. DOI: 10.1515/ijcre-2022-0186. Disponível em: http://repositorio.ipen.br/handle/123456789/34574. Acesso em: 30 Dec 2025.
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