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The Uranium Biosorption by Chlorella pyrenoidosa and its Physiological Responses to Uranium

文献类型： 外文期刊

作者： Sun, Jia 1 ; Yu, Guoping 1 ; Li, Yue 2 ;

作者机构： 1.Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China

2.Guangdong Acad Agr Sci, Guangzhou 510640, Peoples R China

关键词： Chlorella pyrenoidosa;uranium;resistance;biosorption rate

期刊名称：PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-4

ISSN： 1022-6680

年卷期： 2013 年 610-613 卷

页码：

收录情况： SCI

摘要： The effect of uranium at various concentration on the growth of Chlorella pyrenoidosa and the resistance of Chlorella pyrenoidosa to uranium were investigated in this paper. The results showed that the content of O-2(-) and the activity of CAT arose when the concentration of uranium varied at the range of 0.1 to 1.0 mg/L. Uranium had no negative effect on the growth of Chlorella pyrenoidosa at the concentration of 0.1 to 0.5 mg/L, however, had positive effect to some extent. And the rise of the content of O-2(-) and the activity of CAT was followed by rapidly returning to the normal level. The uranium at the concentration of 1.0 mg/L prolonged the lag period of the growth of Chlorella pyrenoidosa. The growth of Chlorella pyrenoidosa arose negatively, the content of O-2(-) also arose to an unreturnable level and the activity of CAT was lower than CK when the concentration of uraniumm varied at the range of 5.0 to 10.0 mg/L. The uranium biosorption rate by Chlorella pyrenoidosa reached to the highest value of 70.43% when concentration of uraniumm was 0.5 mg/L. Chlorella pyrenoidosa is resistant to uranium of low concentration (<= 1.0mg/L) and its biosorption rate is rather high, which indicated good prospect in its future application.

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