Selective biosorption of thorium ions by an immobilized mycobacterial biomass
| Autor: | H. J. MacCordick, J. C. Hubert, Yves Andres |
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| Přispěvatelé: | Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Mines Nantes (Mines Nantes)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes) |
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: |
0303 health sciences
030306 microbiology [SDE.IE]Environmental Sciences/Environmental Engineering Inorganic chemistry Biosorption Concentration effect Thorium chemistry.chemical_element Sorption General Medicine Uranyl Applied Microbiology and Biotechnology Concentration ratio 03 medical and health sciences chemistry.chemical_compound Adsorption chemistry Ammonium ComputingMilieux_MISCELLANEOUS 030304 developmental biology Biotechnology |
| Zdroj: | Applied Microbiology and Biotechnology Applied Microbiology and Biotechnology, Springer Verlag, 1996, 44 (5), pp.271-276 |
| ISSN: | 0175-7598 1432-0614 |
| Popis: | The biosorption of thorium and uranyl ions by cells of Mycobacterium smeamatis has been studied as a function of initial cation concentration. A similar sorption saturation level was observed for both ions. For immobilized cells, optimal conditions of metal ion retention were found for a bacterial mass/support concentration ratio of 1/6. However, selective uptake of thorium was manifest in solutions of the mixed cations. X-ray diffraction studies of the heat-dried biomasses loaded with cations showed that uranyl-loaded samples present a distinct pattern typical of ammonium uranyl phosphate, whereas thorium-loaded samples are amorphous. The microorganism used appears to have useful properties for applications in connection with separation and concentration of natural radioelements under conditions of high dilution. |
| Databáze: | OpenAIRE |
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