SYNTHESIS OF NANO SIZED METAL OXIDES AND INVESTIGATION OF STRONTIUM ADSORPTION
Project no. 212 · Status: Kapanmış · 2017
Summary
Today, with the increasing energy crisis, nuclear power has gained importance as an alternative energy source. Nuclear technology is characterized as a clean and reliable energy source compared to other energy sources, due to the reducing CO2 emissions and preventing the releasing of SO2, NOx gases. Strontium, one of the fission products released during the use of nuclear fuel cycles, poses a threat to human health with its properties similar to calcium. Radioactive strontium causes leukemia, rickets and kidney diseases when it reaches to life. Therefore, studies on removing strontium from waste solutions has gained importance. Adsorption, which is highly preferred in removing radionuclides from waste solutions, is an easy-to-use and economical method. In the adsorption studies, many materials such as activated carbon, nano materials, biosorbents, various resins, composite materials, clay, zeolite are used. Nano adsorbents, which have an important usage potential today, are considered as an effective material in terms of high capacity and selectivity in sorption studies with their superior features. The aim of this study is to synthesize nano-sized metal oxides and investigation of the usability of the synthesized materials in strontium adsorption. For this purpose, manganese oxide (MnO), cobalt oxide (CoO) and nickel oxide (NiO) were synthesized by hydrothermal method and characterization studies were carried out with Zeta-Sizer and SEM-EDX analysis. Strontium adsorption behaviors of the nano CoO adsorbent which is selected as a result of characterization and capacity determination studies, were investigated by experimental design method. The parameters affecting adsorption; contact time, initial Sr concentration, pH and temperature were determined as a function of the Taguchi design and optimum conditions were determined. The results show that CoO synthesized at nanoscale can be used in strontium adsorption.