Nowadays, the combination of ozone with solid phase catalyst is an innovative variety of advanced oxidation processes. This process is common called heterogeneous catalytic ozonation which achieve the mineralization of some dissolved organic compounds at room temperature. Usually, organic pollutants and byproducts generated in the conventional ozonation were fast degraded with the catalytic ozonation. 4-Phenolsulfonic acid (4-PSA) is an important intermediate of detergents, medicines, agrochemicals and colouring agents. The objective of this work is to investigate the 4-PSA and phenol degradation in aqueous solution by the catalytic ozonation using NiO as catalyst. The novelty of this study is that NiO was added in the reaction system at 20 and 40 min with the aim to increasing the intermediates degradation formed during the ozonation. Furthermore, the effect of reuse catalyst was considered. The results showed NiO was effective catalyst in the elimination of 4-PSA, phenol and byproducts during 120 min.<br/> <br/>

Ozonation of 4-phenolsulfonic acid and phenol in presence of NiO as catalyst

251st National Meeting (2016)

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