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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access September 1, 2004

Removal of 60Co2+ and 137Cs+ ions from low radioactive solutions using Azolla caroliniana willd. water fern

Karin Popa, Alexandru Cecal, Doina Humelnicu, Ioan Caraus and Camelia Draghici
From the journal Open Chemistry


This study concerns the removal of the 137Cs+ and 60Co2+ β+γ-radioactive ions in Azolla caroliniana Willd. water fern. The living fern and two different types of biosorbent prepared from Azolla caroliniana were tested to remove the above-mentioned radioactive ions from dilute solutions, in the absence and in the presence of the ionic competition. Effective 137Cs+ and 60Co2+ ions removal from low radioactive wastewaters was demonstrated. The time dependent K d(t) values were calculated from the absorption data. These results indicate that removal process achieved equilibrium in about 120 min and that it involves two steps: rapid and slow absorption; the active process (metabolic bioaccumulation on the living fern) was responsible for above one half of the total removal process. A thin layer radiochromatography study leads to the conclusion that the biochemical components in which 137Cs+ and 60Co2+ place themselves are of a polysaccharide and lipoid fractions.

[1] K.H. Lieser: “Radionuclides in the geosphere: Sources, mobility, reaction in natural waters and interaction with solids”, Radiochim. Acta, Vol. 70/71, (1990), pp. 355–375. Search in Google Scholar

[2] E.V. Kvasnikova, E.D. Stukin, V.N. Golosov, N.N. Ivanova and A.V. Panin: “Caesium-137 behaviour in small agricultural catchments on the area of the Chernobyl contamination”, Czech. J. Phys., Vol. 49, No. 1, (1999), pp. 181–187. Search in Google Scholar

[3] B.C. Wolverton: NASA Technical Memorandum TM-X-72721/1975. Search in Google Scholar

[4] A. Cecal, I. Palamaru, K. Popa, I. Caraus, V. Rudic and A. Gulea: “Accumulation of 60Co2+ and UO22 ions on hydrophytae plants” Isotopes Environm. Health Stud., Vol. 35, (1999), pp. 213–219. Search in Google Scholar

[5] A. Cecal K. Popa, I. Caraus and I.I. Craciun: “Uranium and thorium uptake on the hydrophilic plants”, In: B.J. Merkel, B. Planer-Friederich and C. Wolkersdorfer (Eds.), Uranium in the Aquatic Environment, Springer Verlag, Heidelberg, 2002, pp. 479–488. 10.1007/978-3-642-55668-5_56Search in Google Scholar

[6] A. Cecal, K. Popa, I. Caraus and V. Potoroaca: “65Zn2+ removal on hydrophytic plant”, Isotopes Environm. Health Stud., Vol. 38, (2002), pp. 33–37. in Google Scholar

[7] P.G. Bergamini, G. Palmas, F. Piantelli, M. Sani, P. Banditelli, M. Previtera and F. Sodi: “Study of 137Cs absorption by Lemna minor”, Health Phys., Vol. 37, (1979), pp. 315–321. in Google Scholar

[8] T.G. Hinton, C.M. Bell, F.W. Whicker and T. Philippi: “Temporal changes and factors influencing 137Cs concentration in vegetal colonizing an exposed lake bed over a three-year period”, J. Environm. Rad., Vol. 44, No. 1, (1999), pp. 1–19. in Google Scholar

[9] D.H. Oughton, P. Børretzen, B. Salbu and E. Tronstad: “Mobilization of 137Cs and 90Sr from sediments: potential source to arctic waters”, Sci. Tot. Environm., Vol. 202, No. 1–3, (1997), pp. 155–165. in Google Scholar

[10] P. Ciffroy, J.M. Garnier and M.K. Pham: “Kinetics of the adsorption and desorption of radionuclides of Co, Mn, Cs, Fe, Ag and Cd in freshwater systems: experimental and modeling approaches”, J. Environm. Rad., Vol. 55, No. 1, (2001), pp. 71–91. in Google Scholar

[11] G.M. Gadd: “Microbial interactions with metals/ radionuclide: the basis of bioremediation”, In: M.J. Keith-Roach and F.R. Livens (Eds.): Interactions of microorganisms with radionuclides, Elsevier, Amsterdam, 2002, pp. 179–204. Search in Google Scholar

[12] B. Wolterbeek: “Biomonitoring of trace element air pollution: principles, possibilities and perspective”, Environ. Poll., Vol. 120, No. 1, (2002), pp. 11–21. in Google Scholar

[13] E.C.S. Little: “Handbook of utilization of aquatic plants. A review of world literature”, FAO Fisheries Technical Paper, No. 187, FIRI/T187, Rome, (1979), pp. 176–188. Search in Google Scholar

[14] D.R. Hoagland: “Optimum nutrient solution for plants”, Science, Vol. 52, (1969), pp. 562–564. Search in Google Scholar

[15] J. Yang and B. Volesky: “Biosorption of uranium by Sargassum biomass”, Water Res., Vol. 33, (1999), pp. 3357–3363. in Google Scholar

[16] A. Cecal, K. Popa, V. Potoroaca and N. Puica-Melniciuc: “Decontamination of radioactive liquid wastes by hydrophilic vegetal organisms”, J. Radioanal. Nucl. Chem., Vol. 251, (2002), pp. 257–561. in Google Scholar

[17] F. Veglio’ and F. Beolchini: “Removal of metals by biosorption: a review”, Hydrometallurgy, Vol. 44, (1997), pp. 301–316. in Google Scholar

[18] T.A. Davis, B. Volesky and A. Mucci: “A review of the biochemistry of heavy metal biosorption by brown algae”, Water Res., Vol. 37, (2003), pp. 4311–4330. in Google Scholar

[19] J. Magill: “ an integrated environment for computations on radionuclides and their radiation”, Springer, Berlin, 2003. Search in Google Scholar

Published Online: 2004-9-1
Published in Print: 2004-9-1

© 2004 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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