الفهرس | Only 14 pages are availabe for public view |
Abstract Sorption of both radionuclides and organic ingredients onto solid sorbents is one of the most important ways in processing the aqueous wastes generated from nuclear activities for both inorganic and organic ingredients. The radioactive waste solutions contain chemicals mainly used in decontaminating processes at nuclear activities. The selected contaminants used are 134CS, 89Sr and 6OCOin addition to phenol. So, the current work in this thesis is directed to specify natural materials having high sorption affinity and low economic cost to be used in recovering the selected contaminants from radioactive waste solutions. For this objective, the samples considered are two types of unmodified clay samples (one from South-West of AI/amine. Egypt and has a notation S/ and the secondfrom Baharia oasis, Egypt and has a notation Sz) and a commercial activated granular carbon sample (from Aldrich company, and has a notation of S]). The other objective is devoted to determine the adsorption capacity of the studied samples to the selected contaminants. This work also is concerned with the sorption behavior of 134CS, 89Sr, 6OCOand phenol onto the samples under various conditions, as well as the characterization of the investigated samples. The experimental results are in the form of batch technique. Column investigations were used to identify the applicability of these sorbents for radioactive waste solutions treatment. The basic methodology used involved making standard solutions; mixing a fixed amount of adsorbent (clay or carbon) with specific volume of solution; and then allowing the mixture to equilibrate for definite time. from the concentration of equilibrium solution and the mother solution the amount adsorbed of the contaminant can be determined. |