Garcés Giraldo, Luís FernandoRodríguez Restrepo, Alejandra2012-04-162012-04-1620041794-4449http://hdl.handle.net/10567/172The necessity of keeping the environment in a good shape, has taken us to look for efficient methods to eliminate chemical compounds, produced by several human activities, which contaminate it. Water pollution is very important, because contaminants can accumulate and be transported by brooks, rives, lakes, dams and underground water sources, affecting life forms around them and the health of humans. The most important contamination sources of ground level and underground water sources are waste waters from domestic and industrial origins. Photocatalytical technologies are very promising t be applied in our country, because the use of sun energy reduces, in a very high measure, the cost. Photocatalytical reactors are easy to use, use sun energy and the radiation of ultraviolet lamps. Besides, they are very easy to be adapted for a great variety of aplications.esFotocatálisisFotofentonAguas residualesCorporación Universitaria LasallistaDióxido de titanio (TIO2)FotodegradaciónAguas residuales coloreadasTratamiento de aguas residualesArticle