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Recycling of some solid wastes to produce silica anchored on graphene oxide as sorbent material for uranium ionsProf. Mohamed Farid Cheira Nuclear Materials Authoritymfaridcheira.nma@gmail.comAbstract: Uranium ions may expand into the setting through enforcement, industry, and mining, posing risks to mortal health and biological situations due to radiation and toxicity. Nevertheless, by the widespread use of atomistic energy and further applications, U(VI) is exceptionally loosed into the running solutions; it threatens environmental safety and biological balance. So, U(VI) elimination and deposition from liquid origins are fateful to nucleate energy engendering and peripheral protection. To earn U(VI) outputting from radioactive trash water financially workable, the extracting materials must maintain the features of huge extracting ability, selectivity, departure rate, and reusability. Up to promptly, the utmost study directs on the implementation of extracting materials for U(VI) departure owing to the performance facility, low-price, capability, and broad versatility. The wet process captured silica from rice husk, and also graphene oxide was made from carbon stocks of Zn-C batteries waste via the Hummer processes. The organized silica was attached to the gained graphene oxide to acquire silica/graphene oxide (SiO2/GO) as a sorbent. SiO2/GO was discriminated upon EDX, BET, XRD, SEM, and FTIR. Practical attitudes toward U(VI) sorption include pH, sorption time, SiO2/GO dose, U(VI) concentration, and temperature were premeditated. The practical consequences disclosed that the superlative U(VI) uptake on SiO2/GO is 145.0 mg/g with pH4. The kinetic statistics fit fine through the pseudo-2nd order modeling. Also, Langmuir's sorption modeling designated well the sorption isotherm; nevertheless, sorption progression was random, spontaneous, besides exothermic. Additionally, SiO2/GO was essentially regenerated with a S:L ratio of 1:50 of 0.8 M H2SO4 and a 60 min eluting time. Sorption-desorption seven cycles were executed to inspect the practicality and frequent usage of SiO2/GO. |
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Mohamed cheira received his B.S. degree in Chemistry from Minufiya University in 1991. He received his M.S. And Ph.D. degrees in Analytical and Inorganic Chemistry from Zagazig University in 2005 and 2010 respectively. Mohamed Cheira has twenty years of diverse experience in applied research, waste management, and hands-on experience in the areas of Materials Synthesis, Chemical Processing, and Hydrometallurgy. He participated in many local and international conferences in the field of analytical and inorganic chemistry as well as materials ore processing. Now, he is the head of Uranium and Thorium lab analysis, a Member of the Technical Office Labs, and a Member of the Scientific Office, Nuclear Materials Authority. Also, he is a Member of the Scientific Professions Syndicate (ESSP), Member of the Egyptian Society for Nuclear Sciences and Applications (ESNSA), and Member of the Scientific Society of Nuclear Materials Authority (SSNMA).
