Uptake of Uranium byChlorella regularis

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Abstract
The uptake of U by C. regularis was examined by using the solution containing U only for the 1st step of approach to the recovery of U from the aqueous systems. The uptake of U by C. regularis was very rapid, and was not so affected by light, temperature and treatments with metabolic inhibitors. U taken up in the living cells, 81% was released by washing with EDTA solution. Of U taken up in both living and scalded cells, 75% was distributed in the 26,000 .times. g precipitate of the cell homogenate. The uptake of U by C. regularis depended upon the physical adsorption on the cell surface, but not upon the biological activity, and 9 U in the algal cells was coupled with the ligands, which was easily substituted with EDTA.

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