HEAVY METALS REMOVAL BY USING MAGNETIC IRON OXIDE/TiO2 NANOCOMPOSITE FOR WASTEWATER TREATMENT IN 10TH OF RAMADAN CITY, EGYPT

Abstract

uper-paramagnetic iron oxide nanoparticles with appropriate surface chemistry exhibit many interesting properties that can be exploited in a variety of water treatment applications. These applications require the magnetic nanoparticles (MNPs) to have high magnetization values and particle size smaller than 100 nm. This paper discussed the experimental details for preparation of mono-disperse titania coated iron MNPs by chemical co-precipitation method and micro-emulsion with different surfactants. These experimental preparation processes were vital to determine the optimum pH, initial temperature and sonication time in order to obtain the iron oxide MNPs coated TiO 2-anatase with small particle size and size distribution that is needed for water treatment applications. The nanoparticles were characterized by FT-IR, XRD, VSM and SEM. Removal efficiency of iron and chromium in Sewage water using the prepared MNPs after treatment were observed to be 98.66 and 92.38%, respectively. Removal efficiency of iron and chromium in industrial wastewater were observed to be 98.74 and 99.89%, respectively. Removal efficiency of iron and chromium in synthesized solution after treatment were observed to be 92.56 and 80.69%, respectively. Reduction % of total nitrogen, nitrate and phosphate in sewage water of 10 th Ramadan city after treatment were observed to be 33.33, 100 and 53.44%, respectively. Reduction % of total nitrogen, nitrate and phosphate in industrial wastewater after treatment were observed to be 31.25, 56.64 and 100 %, respectively. Results of this study well demonstrate the efficiency of nanosized iron oxide-coated titanium oxide treatment of wastewater; upon 98-100% of inorganic pollutants such as iron, chromium, nitrate and phosphates could be removed.