info:eu-repo/semantics/article
Degradation of chlorpyrifos formulation in water by the UV/H2O2 process: Lumped kinetic modelling of total organic carbon removal
Fecha
2020-09Registro en:
Lescano, Maia Raquel; López, Alejandro Omar; Romero, Roberto Leopoldo; Zalazar, Cristina Susana; Degradation of chlorpyrifos formulation in water by the UV/H2O2 process: Lumped kinetic modelling of total organic carbon removal; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 404; 9-2020; 1-9
1010-6030
CONICET Digital
CONICET
Autor
Lescano, Maia Raquel
López, Alejandro Omar
Romero, Roberto Leopoldo
Zalazar, Cristina Susana
Resumen
The degradation of a commercial chlorpyrifos (CP) formulation solution under the UV/H2O2 process was predicted through a lumped kinetics modelling approach (LKA). The proposed models are based on different reaction schemes that include the hydroxyl radical reaction rate with the Total Organic Carbon (TOC). TOC represents the concentration of the mixture of CP and “unknown organic matter”, both components present in CP formulation. TOC is one of the most practical parameter that can be used to quantify organic pollution in a complex matrix. A one-step model was selected and a second-order reaction rate constant between hydroxyl radical and TOC was obtained by optimization: 1.75 × 107 M−1 s−1. According to computed performance metrics, the chosen model well fitted the concentrations evolution of the reactants (TOC and H2O2). The model could be useful to predict the behaviour of reaction systems with different configuration for wastewater treatment applications.