%0 Journal Article
%T Remoci¨®n de colorantes sint¨¦ticos mediante el proceso Fenton heterog¨¦neo usando Fe2O3 soportado en carb¨®n activado obtenido a partir de residuos de rosas
%A Juli¨¢n Camilo Garc¨ªa
%A Mar¨ªa Paula Castellanos
%A ¨¢ngela Usc¨¢tegui
%A Jorge Fern¨¢ndez
%J Universitas Scientiarum
%D 2012
%I Pontificia Universidad Javeriana
%X To study the removal of dyes:reactive black 5 and crystal violet by the Fenton reaction using Fe2O3-catalysts (0-10% m/m of Fe) supported on activated carbon obtained from rose remnants. The activated carbon was obtained from pyrolysis at 500 ¡ãC (1h) followed by activation with NaOH (1:2 wt.). The support was classified using several chemical and physical techniques. Fe-catalysts were synthesized by incipient impregnation. Fenton and adsorption treatments were performed in a batch reactor, concentration of dye of 10 mgL-1, 0.25 mgmL-1 catalyst, pH = 3.7, 20 ¡À 2 ¡ã C, 750 rpm and atmospheric pressure. The activated carbon used as support showed high basicity, presence of polar groups on the surface, high ash content (22.85%) and oxygen (43.93%) and was mostly of the microporous type with a BET surface area of 520 m2g-1. The maximum discoloration achieved for black reactive 5 was obtained with the catalyst of 3% Fe (98.33%) after 180 min. while for the crystal violet it was obtained with the catalyst of 1% Fe (63.95%) after 180 min. Discoloration by Fenton treatment is dependent on the Fe content, the particle size of the active site and the type of dye. The removal of reactive black 5 reached a maximum at 3% Fe while the crystal violet decreased by increasing Fe content. The treatment proposed in this paper is promising for the removal of synthetic dyes present in contaminated water.
%K Fenton
%K activated carbon
%K contaminant
%K dye
%K water
%U http://revistas.javeriana.edu.co/index.php/scientarium/article/view/4035/3102