Inactivación de fósforo en aguas eutróficas mediante la aplicación de nanopartículas magnéticas de hierro (magnetita).

Abstract

The objective of this research is to apply magnetic iron nanopaticles (magnetite) for phosphorus inactivation in euphoric waters, becoming a method of restoring water quality, by using the high gradient magnetic separation technique. The present work degree was informed about the effectiveness of using the magnetic nanoparticles of iron (NPMs) in the elimination of phosphorus from water samples extracted from the Laguna de San Antonio de Padua (Chimborazo – Riobamba), with a high trophic state. A water sample was considered to be subjected to a set of three treatments, based on three different suspensions of magnetic nanoparticles, each subject to two periods of interaction. High phosphorus inactivation efficiencies were found, resulting in a 90% reduction. The comparison between different treatments has shown that by increasing the suspensions of NPMs and the interaction time, shows a greater efficiency in the inactivation of phosphorus in eutrophic waters. The result was showed a significant reduction in dissolved and particulate reagent phosphorus; additionally, a decrease in pH and turbidity; and an increase in the chemical oxygen demand in water samples that interacted with NPMs.