The degradation of the anti-inflammatory ibuprofen (IBP) was evaluated by several advanced oxidation processes. IBP was treated by single ozonation and oxidation with hydrogen peroxide (H

2

O

2

)

as well as a combination of these treatments. In order to improve the efficiency

the presence of catalysts such as original carbon nanotubes

labelled as CNT

and iron oxide supported on carbon nanotubes

named as Fe/CNT sample

was considered. The evolution of IBP degradation

mineralization and toxicity of the solutions was assessed. The formation of intermediates was also monitored. In the non-catalytic processes

IBP was faster removed by single ozonation

whereas no significant total organic carbon (TOC) removal was achieved. Oxidation with H

2

O

2

did not present satisfactory results. When ozone and H

2

O

2

were combined

a higher mineralization was attained (70% after 180 min of reaction). On the other hand

in the catalytic processes

this combined process allowed the fastest IBP degradation. In terms of mineralization degree

the presence of Fe/CNT increases the removal rate in the first hour of reaction

achieving a TOC removal of 85%. Four compounds were detected as by-products. All treated solutions presented lower

toxicity than the initial solution

suggesting that the released intermediates during applied processes are less toxic.