Evaluación de la eficiencia degradativa de aguas contaminadas con fenol empleando el compósito magnetita-quitosano

Abstract

The present investigation objective deals with evaluating the degrading efficiency of contaminated water with phenol using the chitosan-magnetite composite; for this the magnetite was synthesized through the co-precipitation method (magnetite separation technique), at the same time the chitosan dilution was caried out and a solution of purified magnetite was incorporated; the phenol raw solution was prepared and they were characterized through the infrared spectroscopy confirming the presence of functional groups features of such a composite and of phenol. Later 44 experiments were performed with the following results: chitosanmagnetite concentration (the most favorable is the one with 47,45% decrease in the phenol concentration), in the UV light absence (58.51%) in the hydrogen peroxide absence, which were analyzed in the UV-visible spectrophotometer. With the obtained information the quantitative statistical analysis was carried out, concluding that the best result was in the hydrogen peroxide absence, where up to 60.29% phenol degradation was reached in a 200-minute time which was the balance time in this investigation; moreover, a photoreactor was designed with a continuous UV radiation source concluding that it is not so significant variable as in its absence the phenol degradation percentage was major. It is recommended for future studies to use UV light sources at different wave length to verify its influence in the photodegradation study.