Removal of Crystal Violet by wet oxidation with H2O2 over an Iron oxide catalyst synthesized from Fly Ash

In order to recover and utilize waste coal generated by thermal power plants,fly ash (fa) was employed in this research to treat contaminated wastewater. generally,a preliminary washing treatment of raw fa with ultra pure water was necessary. rather fa provided a high surface area for the deposition of iron oxide from its precursor solution; it also acted as a support during wet impregnation process. the morphology and structure of raw fa,washed fa and synthesized fe/fa catalyst (fe-fac),were investigated by two analytical methods included,powder x-ray diffraction (xrd) and scanning electron microscopy (sem). as one of the most persistent and largely applied synthetic dyes,crystal violet (cv) may pose a dangerous risk to the environment. therefore,the catalytic activity of fe-fac was evaluated by the wet oxidation of cv using hydrogen peroxide (h2o2). the influence of some important parameters such as,catalyst dose,precursor load,initial dye concentration,h2o2 amount,ph and temperature were studied as well. significantly,the fe-fac/h2o2 process enhanced the removal of cv under optimum conditions revealed according to this study. © 2017,university of mohammed premier,oujda morocco.