Hu Nan, Li Ke, Sui Yang, Ding Dexin, Dai Zhongran, Li Dianxin, Wang Nieying, Zhang Hui
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China Hengyang 421001 China.
Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources Hengyang 421001 China
RSC Adv. 2018 Apr 10;8(24):13459-13465. doi: 10.1039/c8ra01344f. eCollection 2018 Apr 9.
In this work, uranium(vi) biomineralization by soluble -phosphate from decomposition of the phosphate rock powder, a cheap and readily available material, was studied in detail. was effective in solubilizing P from the phosphate rock powder, and the highest concentration of the dissolved phosphate reached 220 mg L (pH = 6). A yellow precipitate was immediately formed when solutions with different concentrations of uranium were treated with PO -containing fermentation broth, and the precipitate was identified as chernikovite by Fourier transform infrared spectroscopy, scanning electron microscope, and X-ray powder diffraction. Our study showed that the concentrations of uranium in solutions can be decreased to the level lower than maximum contaminant limit for water (50 μg L) by the Environmental Protection Agency of China when was incubated for 22 days in the broth containing 5 g L phosphate rock powder.
在这项工作中，详细研究了利用廉价且易于获得的材料——磷矿粉分解产生的可溶性磷酸盐对铀(VI)进行生物矿化的过程。[此处原文似乎有缺失内容]在溶解磷矿粉中的磷方面很有效，溶解态磷酸盐的最高浓度达到220毫克/升（pH = 6）。当用含PO[此处原文似乎有缺失内容]的发酵液处理不同浓度的铀溶液时，立即形成黄色沉淀，通过傅里叶变换红外光谱、扫描电子显微镜和X射线粉末衍射鉴定该沉淀为磷铀矿。我们的研究表明，当在含有5克/升磷矿粉的肉汤中培养22天时，溶液中的铀浓度可降低至低于中国环境保护局规定的水的最大污染物限量（50微克/升）的水平。
