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Membrane Water Treatment Volume 9, Number 5, September 2018 , pages 327-334 DOI: https://doi.org/10.12989/mwt.2018.9.5.327 |
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Efficient removal of radioactive waste from solution by two-dimensional activated carbon/Nano hydroxyapatite composites |
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Nessem El Said and Amany T. Kassem
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| Abstract | ||
| The nano/micro composites with highly porous surface area have attracted of great interest, particularly the synthesis of porous and thin film sheets of high performance. In this paper, an easy method of cost-effective synthesis of thin film ceramic fiber membranes based on Hydroxyapatite, and activated carbon by turned into studied to be applied within the service-facilitated the transport of radioactive waste such as 90Sr, 137Cs and 60Co) as activated product of radioisotopes from ETRR-2 research reactor and dissolved in 3M HNO3, across a thin flat-sheet supported liquid membrane (TFSSLM). Radionuclides are transported from alkaline pH values. The presence of sodium salts in the aqueous media improves in HNO3, the lowering of permeability because the initial HNO3 concentration is improved. The study some parameters on the thin sheet ceramic supported liquid membrane. EDTA as stripping phase concentration, time of extraction and temperature were studied. The study of maximum permeability of radioisotopes for all parameters. The pertraction of a radioactive waste solution from nitrate medium were examined at the optimized conditions. Under the optimum experimental 98.6-99.9% of 90Sr, 79.65-80.3% of 137Cs and 60Co 45.5-55.5% in 90-110 min with were extracted in 10-30 min, respectively. The process of diffusion in liquid membranes is governed by the chemical diffusion process. | ||
| Key Words | ||
| radionuclides; nHydroxyapatite; nActivated Carbon; thin film supported liquid membrane | ||
| Address | ||
| Nuclear Fuel Chemistry Hot Labs. And Waste Management Center, Atomic Energy Authority, P.C. 13759, Cairo, Egypt | ||
