PUBLICACIÓN
Monopersulfate in water treatment: Kinetics
ACCEDER A LA PUBLICACIÓN:
F. Javier Rivas
2022 Journal of Hazardous Materials
Environmental Chemistry (Q1), Environmental Engineering (Q1), Health, Toxicology and Mutagenesis (Q1), Pollution (Q1), Waste Management and Disposal (Q1)
JCR: 13.6
SJR: 2.57
DOI
10.1016/j.jhazmat.2022.128383
ISSN
0304-3894
BIBTEX
TY - JOUR T1 - Monopersulfate in water treatment: Kinetics AU - Rivas, F. Javier JO - Journal of Hazardous Materials VL - 430 SP - 128383 PY - 2022 DA - 2022/05/15/ SN - 0304-3894 DO - https://doi.org/10.1016/j.jhazmat.2022.128383 UR - https://www.sciencedirect.com/science/article/pii/S0304389422001716 KW - Peroxymonosulfate KW - Kinetics modelling KW - Variables influence KW - Radical mechanism AB - The kinetics of monopersulfate based systems in the elimination of potential harmful contaminants has been assessed from a theoretical point of view. A detailed reaction mechanism sustained in the generation of radicals (mainly hydroxyl and sulfate), propagation and termination stages has been proposed. The system of first order differential equations derived has numerically been solved. The effect of main influencing parameters such as contaminant and peroxymonosulfate initial concentrations, intermediate generation, presence of organic matter, role played by anions, has been theoretically obtained. Discussion of simulated results has been accomplished by comparison with experimental data found in the literature. At the sight of the theoretical and empirical data, use of simplistic pseudo first order kinetics is discouraged. Despite considering a significant number of elemental reactions, modelling of the system reveals that a high fraction of them can be neglected due to their insignificant role played in the mechanism. The entire mechanism has been tested when peroxymonosulfate has been activated by UV radiation, although results can be fairly extrapolated to other activation strategies. Finally, a generic model capable of accounting for the effect of a diversity of parameters is proposed. No theoretical background is behind the model, however the generic model clearly improves the results obtained by simple first order kinetics. ER -
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