Uptake of Uranium from Sea Water by Microalgae : Studies on the Accumulation of Heavy Metal Elements in Biological Systems (VI)
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概要
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The uptake of uranium from aqueous systems especially from sea water by various microalgae was investigated. The freshwater microalgae, Chlorella regularis, Scenedesmus bijiuga, Scenedesmus chloreloides, Scenedesmus obliquus, Chlamydomonas angulosa, Chlamydomonas reinhardtii, accumulated relatively large amounts of uranium from the solution containing uranium only. The concentration factors of the above mentioned algae were : Chlorella regularis 3930,Chlamydomonas 2330-3400,Scenedesmus 803-1920.The uptake of uranium from sea water by Chlorella regularis was inhibited markedly by the co-existence of carbonate ions. Chlorella cells could take up a great quantity of uranium from decarbonated sea water. The uptake of uranium was affected by the pH of sea water, and the amount of uranium absorbed was maximum at pH 5.The experiment was carried out to screen marine microalgae which have the ability to accumulate a large amount of uranium from sea water. The uptake of uranium from sea water by marine microalgae of different species turned out to be in the following decreasing order : Synechococcus>Chlamydomonas≫Chlorella>Dunaliella>Platymonas>Calothrix>Porphyridium. The amount of uranium absorbed differed markedly with different species of marine microalgae.
- 社団法人日本生物工学会の論文
- 1978-12-25
著者
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NAKAJIMA Akira
Department of Computer Science and Electrical Engineering, Graduate School of Science and Technology
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HORIKOSHI Takao
Department of Environmental Studies, Faculty of Integrated Arts and Sciences, Hiroshima University
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Horikoshi Takao
Department Of Chemistry Miyazaki Medical College
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Sakaguchi Takashi
Department Of Chemistry Miyazaki Medical College
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Nakajima Akira
Department Of Applied Electronics Tokyo Institute Of Technology
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Nakajima Akira
Department Of Chemistry Miyazaki Medical Collge
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