利用 sp. AA1 从水溶液中吸附铀酰离子。
Biosorption of Uranyl Ions from Aqueous Solution by sp. AA1.
机构信息
Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Korea.
Department of Bio Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea.
出版信息
Int J Environ Res Public Health. 2021 Mar 31;18(7):3641. doi: 10.3390/ijerph18073641.
In the present study we investigated the ability of the microalgal strain sp. AA1 to biologically uptake a radionuclide waste material. Batch experiments were conducted to investigate the biosorption of uranyl ions (U(VI)) in the 0.5-50.0 mg/L concentration range by strain AA1. The results showed that AA1 biomass could uptake U(VI). The highest removal efficiency and biosorption capacity (95.6%) occurred within 60 h at an initial U(VI) concentration of 20 mg/L. The optimum pH for biosorption was 9.0 at a temperature of 25 °C. X-ray absorption near edge structure analysis confirmed the presence of U(VI) in pellets of sp. AA1 cells. The biosorption methods investigated here may be useful in the treatment and disposal of nuclides and heavy metals in diverse wastewaters.
在本研究中，我们研究了微藻株 sp. AA1 生物摄取放射性废物材料的能力。进行了分批实验，以研究菌株 AA1 在 0.5-50.0 mg/L 浓度范围内对铀离子 (U(VI)) 的生物吸附。结果表明，AA1 生物质可以吸收 U(VI)。在初始 U(VI)浓度为 20 mg/L、60 h 时，去除效率和生物吸附容量（95.6%）最高。在 25°C 温度下，最适 pH 值为 9.0。X 射线吸收近边结构分析证实了 U(VI)存在于 sp. AA1 细胞的颗粒中。这里研究的生物吸附方法可能对处理和处置不同废水中的核素和重金属有用。
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