Borralho, Maria TeresaGimeno, OlgaRivas, JavierCarbajo, Maria2011-11-022011-11-022009-09World Academy of Science, Engineering and Technology, ISSN 2010-376x, n.º57 (Setembro 2009), p.223-226.http://hdl.handle.net/10400.26/1550Potassium 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.engMonopersulfateOxoneSulfate radicalsWater treatmentjournal article