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Removal of Technetium from Solution by Algal Flagellate Euglena gracilis

^a Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, 263-8555 Japan
^b Aquatic Radiation Ecotoxicology Research, Environmental Radiation Effects Research Group, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, 263-8555, Japan

View larger version (30K): [in a new window]   Fig. 1. Technetium-99 removal (closed circles) and growth (open circles) of (A) E. gracilis, (B) C. pulsatilla, (C) C. vulgaris, and (D) S. platensis. Values represent the means and standard deviations of triplicate experiments. For the removal of 99Tc, standard deviations are within closed circles.

View larger version (29K): [in a new window]   Fig. 2. Technetium-99 removal (closed circles) and growth (open circles) for the killed cells of E. gracilis: The culture spiked with (A) cycloheximid and (B) the heat-killed culture. Values represent the means and standard deviations of triplicate experiments.

View larger version (16K): [in a new window]   Fig. 3. Relative extraction and desorption amounts of 99Tc. Bars represent the means and standard deviations of triplicate experiments.