Abstract
Ozone and activated carbon (AC) have been used on the removal of 17α-ethynylestradiol (ETOL), a pharmaceutical compound, and its oxidation by-products. Although single ozonation is not able to totally remove the by-products formed from the degradation of the parent compound (about 65% of TOC removal at pH 7 after 2-hour reaction), the ozone/AC system led not only to higher TOC removal at the same conditions (about 90% in the case of P110 Hydraffin AC) but also to lower ozone consumption. In addition, samples treated with the catalytic process presented ecotoxicity values lower than those resulting from the application of single ozonation.
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