(cest2017_00465) Removal of Methylene Blue dye solution by Fenton-like process using heat treated Laterite

摘要

Laterite, an Iron rich soil from Dano, was heat at 800 °Cand used as catalyst in methylene blue (MB) removal, aprototype of organic dye, by Heterogeneous Fentonprocess. The catalyst porosity was characterized throughNitrogen and MB adsorption isotherms. Nitrogenadsorption and desorption revealed that the LT-800 has aweak BET specific area, around 7m2.g-1. MB adsorptionisotherms were plotted with Langmuir and Freundlichequations. The MB removal rate was of 96 % after 20minutes of adsorption plus 80 minutes of Fenton reactionat room temperature According to the HPLC analysisresults and the UV spectrum, the MB removal was basedon both adsorption and degradation process. However, thedegradation process was essentially heterogeneous.