Summary
Some attempts were made to recover uranium from sea and fresh water using immobilized Streptomyces viridochromogenes and Chlorella regularis cells. The cells immobilized in polyacrylamide gel have the most favorable features for uranium recovery; high adsorption ability, good mechanical properties, and applicability in a column system. The adsorption of uranium by the immobilized cells is not affected by the pH values between 4 and 9. These results show that uranium adsorption becomes independent of pH after immobilization. The amounts of uranium adsorbed by the immobilized cells increased linearly with temperature, suggesting that the adsorption of uranium by the immobilized cells is an endothermic reaction. The immobilized cells can recover uranium almost quantitatively from both fresh and sea water containing uranium, and almost all uranium adsorbed is desorbed with a solution of Na2CO3. Thus the immobilized cells of Streptomyces and Chlorella can be used repeatedly in adsorption-desorption process.
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References
Chibata I, Tosa T, Sato T (1976) Production of L-aspartic acid by microbial cells entrapped in polyacrylamide gels. In: Mosbach K (ed) Methods in enzymology, vol 44, Immobilized enzymes. Academic Press, New York San Francisco London, pp 739–746
Horikoshi T, Nakajima A, Sakaguchi T (1979a) Studies on the accumulation of heavy metal elements in biological systems IV. Uptake of uranium by Chlorella regularis. Agric Biol Chem 43:617–623
Horikoshi T, Nakajima A, Sakaguchi T (1979b) Studies on the accumulation of heavy metal elements in biological systems IX. Uptake of uranium from sea water by Synechococcus elongatus. J Ferment Technol 57:191–194
Horikoshi T, Nakajima A, Sakaguchi T (1981) Studies on the accumulation of heavy metal elements in biological systems XIX. Accumulation of uranium by microorganisms. Eur J Microbiol Biotechnol 12:90–96
Mosbach K (ed) (1976) Methods in enzymology, vol 44, Immobilized enzymes. Academic Press, New York San Francisco London
Sakaguchi T, Horikoshi T, Nakajima A (1978) Studies on the accumulation of heavy metal elements in biological systems VI. Uptake of uranium from sea water by microalgae. J Ferment Technol 56:561–565
Sakaguchi T, Tsuji T, Nakajima A, Horikoshi T (1979) Studies on the accumulation of heavy metal elements in biological systems XIV. Accumulation of cadmium by green microalgae. Eur J Appl Microbiol Biotechnol 8:207–215
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Studies on the Accumulation of Heavy Metal Elements in Biological Systems. XXI
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Nakajima, A., Horikoshi, T. & Sakaguchi, T. Recovery of uranium by immobilized microorganisms. European J. Appl. Microbiol. Biotechnol. 16, 88–91 (1982). https://doi.org/10.1007/BF00500732
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DOI: https://doi.org/10.1007/BF00500732