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- Title
Competitive biosorption of thorium and uranium by Micrococcus luteus.
- Authors
Nakajima, A.; Tsuruta, T.
- Abstract
Eighteen species of bacteria were screened for abilities to adsorb thorium and uranium. High adsorbtion capacity was observed for thorium by Arthrobacter nicotianae and Micrococcus luteus, and for uranium by Arthrobacter nicotianae. The adsorption of both thorium and uranium by Micrococcus luteus cells was rapid, was affected by the solution pH, and obeyed the Langmuir adsorption isotherm for binary systems in a competitive manner taking the ionic charge of the metal ion into account. The thorium selectivity in the competitive adsorption is assumed to be caused by the faster adsorption and the slower desorption rates of thorium than those of uranium.
- Subjects
RADIOACTIVE tracers in biology; MICROCOCCUS luteus; ADSORPTION (Chemistry); RADIOACTIVE substances; SEPARATION (Technology); ATMOSPHERIC temperature
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2004, Vol 260, Issue 1, p13
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1023/B:JRNC.0000027055.16768.1e