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Catalytic decomposition of potassium monopersulfate: influence of variables
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Orientador(es)
Resumo(s)
Potassium monopersulfate has been decomposed in aqueous solution in the presence of Co(II). The effect of the main operating variables has been assessed. Minimum variations in pH exert a considerable influence on the process kinetics. Thus, when no pH adjustment is considered, the actual effect of variables like initial
monopersulfate and/or catalyst concentration may be hindered. As expected, temperature enhances the monopersulfate decomposition
rate by following the Arrhenius law. The activation energy in the proximity of 85 kJ/mol has been obtained. Amongst the different solids tested in the monopersulfate decomposition, only the
perovskite LaTi0.15Cu0.85O3 has shown a significant catalytic activity.
Descrição
Palavras-chave
Monopersulfate Oxone Sulfate radicals Water treatment
Contexto Educativo
Citação
World Academy of Science, Engineering and Technology, ISSN 2010-376x, n.º57 (Setembro 2009), p.223-226.