Physico-Chemical Characteristics Studies of Al2O3/Zr02 composite Materials and Their Utilization in Treatment of Different Waste Solutions

Tow types of alumina/zirconia composite systems using M go and Y2O3 stabilizers were prepared applying the polymeric sol-gel route method using metal chloride precursors. the prepared ceramic powders were characterized using various techniques:x-ray fluorescence (XRF), scanning electron microscope (SEM),differential thermal analysis and thermogravimetric analysis (DTA-TG), x-ray diffraction (XRD),surface area using the BET-method, heating microscope and finally vacuum method. the prepared composite materials were tested for removal of Co(II),Cd(II),Pb(II) and U(Vi) ions from industrial liquid waste. factors affecting the sorption behaviour e.g. particle size, contact time, temperature, initial concentration of the solute, mass of adsorbent and competing ions were studied by applying batch technique. temperature effect shows that the adsorption process is endothermic. adsorption could be described by langmuir and freundlich isotherm following lewis acid-base principle. the ceramic materials represent the lewis base adsorption sites. the adsorption capacity of prepared composite materials for removal of Co(II), Cd(II),Pb(II) and U(V I) ions from industrial liquid waste was 209,189,33 and 67 mg/g, respectively. As a result, the feasibility of specific ceramic materials suitable to remove the fore mentioned ions was addressed