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The effects of K+ growth conditions on the accumulation of cesium by the bacterium Thermus sp. TibetanG6

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Abstract

The accumulation of cesium by the bacterium Thermus sp. TibetanG6 was examined under different K+ growth conditions. The effects of external pH and Na+ on the accumulation of cesium were also studied, and the mechanism involved was discussed. K+ regimes played an important role in the accumulation of cesium by the strain TibetanG6. The quantity of cesium accumulated (24 h) was much higher in K+-deficient regime than that in K+-sufficient regime. The pH and Na+ had different effects on the accumulation of cesium in the two K+ regimes. IR spectra analyses indicated that the biosorption is a process of homeostasis with cesium initially accumulated on the cell wall.

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Authors and Affiliations

  1. R&D Center for Saline Lake and Epithermal Deposits, Chinese Academy of Geological Sciences, Beijing, 100037, China

    Wang Hailei, Kong Fanjing & Zheng Mianping

  2. Key Open Laboratory of Saline Lake Resources and Environment, Chinese Academy of Geological Sciences, Beijing, 100037, China

    Wang Hailei, Kong Fanjing & Zheng Mianping

  3. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037, China

    Wang Hailei, Kong Fanjing & Zheng Mianping

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  1. Wang Hailei
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  2. Kong Fanjing
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  3. Zheng Mianping
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Correspondence to Wang Hailei.

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Wang, H., Kong, F. & Zheng, M. The effects of K+ growth conditions on the accumulation of cesium by the bacterium Thermus sp. TibetanG6. SCI CHINA SER C 49, 123–129 (2006). https://doi.org/10.1007/s11427-006-0123-5

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  • DOI: https://doi.org/10.1007/s11427-006-0123-5

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