Photodegradation and adsorption of hexazinone in aqueous solutions: removal efficiencies, kinetics, and mechanisms.

ABSTRACT: Hexazinone, a globally applied broad-spectrum triazine herbicide, has not been mechanistically investigated previously under advanced oxidation processes (AOPs) and adsorption on activated carbon. In this study, its fate during UV-based oxidation with/without hydrogen peroxide (H₂O₂) and adsorption on coconut shell-based granular activated carbon (CSGAC) in water matrices was investigated. A comparison between various irradiation sources (visible, UVA, UVB, and UVC) revealed the highest degradation rate under UVC. More than 98% degradation of hexazinone was observed under 3 J cm^-2 UVC fluence in the presence of 0.5 mM H₂O₂ at pH 7. Moreover, the degradation rate enhanced significantly with an increase in the initial dosage of H_2</

SUBMITTER: Jasemizad T 

PROVIDER: S-EPMC9252970 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature