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- Title
Uranium (VI) recovery from saline environment by a marine unicellular cyanobacterium, Synechococcus elongatus.
- Authors
Acharya, C.; Chandwadkar, P.; Joseph, D.; Apte, S.
- Abstract
Sequestration of uranium from simulated sea water and reverse osmosis concentrates by the marine cyanobacterium, Synechococcus elongatus was assessed. Short term experiments established removal of 90-98 % uranium by the strain from simulated sea water containing 13 nM uranyl carbonate at pH 7.8, resulting in a loading of 7-42 μg U g over a period of 1-5 days respectively. Long term experiments involving repeated exposure of Synechococcus biomass to fresh simulated sea water every third day, showed a loading of 2,960 μg U g in 4 weeks. Nearly 85-90 % of cell bound uranium could be desorbed using 0.1 N HCl. The organism could sequester uranium (13,306 μg U g in 24 h) from aqueous solutions supplemented with 0.6 M NaCl and 21 μM [UO(CO)] at pH 7.8. The results demonstrate noteworthy potential of this organism for harnessing uranium from marine environments.
- Subjects
URANIUM; REVERSE osmosis in saline water conversion; SEPARATION (Technology); CYANOBACTERIA; SYNECHOCOCCUS elongatus; SIMULATION methods &; models; ADSORPTION (Chemistry); AQUEOUS solutions
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2013, Vol 295, Issue 2, p845
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-012-1912-x