Garcés Giraldo, Luís Fernando2012-04-122012-04-1220101794-4449http://hdl.handle.net/10567/159Introduction. Textiles sector has a special place among tyhose that have a high environmental impact. Textile dyes are very persistent in the environment and the classic elimination methods are not useful in this case given the fact that partial oxidations or reductions can generate very toxic secondary products. Sensitized photo degradation with TiO2 or FeCl 3 , is technique that can be used as a depuration system or as a tertiary process, specially in industrial waste´s treatment. Objective. To evaluate the interaction of TiO 2 and FeCl 3 , with H2 O2 from textile liquid wastes by the use of artificial light through response surfaces. Materials and methods. A 60 Hz MIGHTY PURE ultra-violet light lamp was used with a 41 cm x 25,5 cm x 20 glass bowl with 15 L of sample. This system is supplemented with a pump that produces a 0,047 L/s flow. Results. A 100% degradation was obtained, and so a 70.1% mineralization percentage in the test in which a 60 mg/L FeCl 3 and 1.0 mL/L of H 2 O2 dose was used. Conclusion. FeCl 3 ddegrades and mineralizes water faster than H2 O2 .esAguas residuales industrialesTratamiento de aguas residualesColorantes textilesAmarillo novactive F4GLMineralizaciónMedio ambienteContaminación del aguaCorporación Universitaria LasallistaArticle