Biosorption and biomineralization of U(VI) by Kocuria rosea: Involvement of phosphorus and formation of U-P minerals
Biosorption and biomineralization of U(VI) by Kocuria rosea: Involvement of phosphorus and formation of U-P minerals
复制标题
Kocuria Rosea 对 U(VI) 的生物吸附和生物矿化：磷的参与和 U-P 矿物质的形成
DOI：
10.1016/j.chemosphere.2021.132659
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发表时间：
2022
期刊：
影响因子：
8.8
通讯作者：
He Dengliang
中科院分区：
文献类型：
--
作者：
Zhou Lin;Dong Faqin;Zhang Wei;Chen Yuheng;Zhou Lei;Zheng Fei;Lv Zhenzhen;Xue Jingyuan;He Dengliang
本研究探讨了抗铀能力高于其他一般微生物的Kocuria Rosea对U(VI)的生物吸附和生物矿化行为。结果表明，初始U(VI)浓度、生物量、时间，特别是pH值对U(VI)的影响明显，表明U(VI)被固定在K上。玫瑰由物理和化学作用。沉淀表征结果表明，U-P矿物以U(VI)(H3OUO2PO4·3H2O、H2(UO2)2(PO4)2·8H2O)或U(IV)(CaU(PO4)2)为主，且结晶程度随时间增加。在此过程中，含磷基团、氨基、羟基和羧基在U(VI)的吸附中起重要作用，磷酸基团在铀的固定化中至关重要，显示出含磷基团在生物吸附和生物矿化过程中的重要性。我们的研究结果集中于 K 的 U(VI) 的生物吸附和生物矿化机制。 Rosea，强调物理吸附和化学固定在U(VI)-P和U(IV)-P矿物的过程和形成中的协同作用，并强调磷参与反应的重要性。
The biosorption and biomineralization behavior of U(VI) by Kocuria rosea with uranium resistance higher than other general microorganisms was investigated in this study. The results showed the obvious effects of initial U(VI) concentration, biomass, time, and especially pH, and presented that U(VI) was immobilized toK. roseaby physical and chemical action. The characterization results for the precipitation proved that U–P minerals with U(VI) (H3OUO2PO4·3H2O, H2(UO2)2(PO4)2·8H2O) or U(IV) (CaU(PO4)2) were dominant, and the crystallization level increased with time. In the process, the phosphorous containing groups, amino, hydroxyl and carboxyl groups played important roles in adsorption of U(VI), and the phosphate groups were crucial in immobilization of uranium, showing the importance of groups containing phosphorus in both biosorption and biomineralization processes. Our findings focus on the biosorption and biomineralization mechanism of U(VI) byK. rosea, emphasize the synergy of physical adsorption and chemical immobilization in the process and formation of U(VI)–P and U(IV)–P minerals, and highlight the significance of phosphorus involvement in the reaction.