Adsorption characteristics of metal ions by CO2-fixing Chlorella sp. HA-1

다국어 초록 (Multilingual Abstract)

Single and binarymetal systems were employed to investigate the removal characteristics of Pb2+, Cu2+,
Cd2+, and Zn2+ by Chlorella sp. HA-1 that were isolated from a CO2 fixation process. Adsorption test of
single metal systems showed that the maximummetal uptakes were 0.767 mmol Pb2+, 0.450 mmol Cd2+,
0.334 mmol Cu2+ and 0.389 mmol Zn2+ per gram of dry cell. In the binary metal systems, the metal ions
on Chlorella sp. HA-1 were adsorbed selectively according to their adsorption characteristics. Pb2+ ions
significantly inhibited the adsorption of Cu2+, Zn2+, and Cd2+ ions, while Cu2+ ions decreased remarkably
the metal uptake of Cd2+ and Zn2+ ions. The relative adsorption between Cd2+ and Zn2+ ions was reduced
similarly by the presence of the other metal ions.

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