Adsorption of pertechnetate ion on active carbon from acids and their salt solutions
- 55 Downloads
The adsorbability of pertechnetate ion (TcO 4 − ) reached 96% for an active carbon at the 0.1 g/50 ml concentration level, increasing with diminution of acid and its salt concentrations, and depending on the type of anions present. With constant anion concentration, TcO 4 − adsorbability rose with decreasing pH in the acidic region, followed in the region around neutrality by a plateau, and in the basic region by an appreciable decline of TcO 4 − adsorbability. In the acidic region, part of once-adsorbed TcO 4 − appeared to be displaced by other anions. Reversibility was noted between the adsorption and desorption of TcO 4 − .
KeywordsPhysical Chemistry Inorganic Chemistry Active Carbon Salt Concentration Salt Solution
Unable to display preview. Download preview PDF.
- 1.F. LUYKX, Technetium Discharges into the Environment, in: G. DESMET, C. MYTTENAERE (Eds), Technetium in the Environment, Elsevier Applied Sci., London and New York, 1984.Google Scholar
- 2.K. ITO, T. KANNO, J. Nucl. Sci. Technol., 23 (1986) 37.Google Scholar
- 3.K. ITO, T. KANNO, J. Nucl. Sci. Technol., 25 (1988) 534.Google Scholar
- 4.H. YOSHIDA, K. KAMEOKA, Surface Oxides and Their Adsorption Function of Active Carbons, in: K. KABAYASHI, H. HONDA (Eds), Carbon Materials for High Technology (in Japanese), Kogyo Chosakai, Tokyo, 1987.Google Scholar
- 6.V. A. GARTEN, D. E. WEISS, Aust. J. Chem., 10 (1957) 309.Google Scholar
- 7.C. M. LEDERER, V. S. SHIRLEY (Eds), Table of Isotopes, (7th ed.), John Wily and Sons, New York, 1978.Google Scholar
- 8.I. M. KOLTHOFF, P. J. ELVING, E. B. SANDELL, Treatise on Analytical Chemistry, Part 1, Theory and Practice, Vol. 3, Interscience Pub., New York, 1961.Google Scholar
- 10.A. CLEARFIELD (Ed), Inorganic Ion Exchanger Materials, CRC Press, Boca Raton, Florida, 1982.Google Scholar
- 11.S. UMEZAWA, Organic Chemistry II, Maruzene, Tokyo, 1962.Google Scholar