Manganese Catalysis in Water Pollutants Abatement by Ozone

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Abstract
The catalytic influence of the Mn(II)oxalic acid system on the abatement by ozone of different organic pollutants in water is investigated. Results of the ozonation experiments performed in semibatch conditions reveal that even refractory aromatic pollutants are quickly removed by catalytic ozonation. Catalysts may be rendered ineffective by either high intrinsic reactivity of the organic pollutant in radical initiation by ozone and/or by strong radical scavenging effects of reacting mixtures. An interesting feature of the investigated system is that catalytic Mn(II) concentrations are similar to those found in some natural waters.

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