Microbially enhanced chemisorption of nickel into biologically synthesized hydrogen uranyl phosphate: a novel system for the removal and recovery of metals from aqueous solutions.
Microbially enhanced chemisorption of nickel into biologically synthesized hydrogen uranyl phosphate: a novel system for the removal and recovery of metals from aqueous solutions.
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微生物增强镍对生物合成磷酸氢铀的化学吸附：一种从水溶液中去除和回收金属的新型系统。
DOI：
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发表时间：
1997
影响因子：
3.8
通讯作者：
L. Macaskie
中科院分区：
文献类型：
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作者：
G. Bašnáková;L. Macaskie
Ni（2+）从水流中定量去除与多晶磷酸氢铀酰（HUP）结合的柠檬酸杆菌属固定化细胞的柱。有效地发挥作用，在Ni的吸收/再生周期，5个周期完成，而没有显着降低的Ni-去除能力的列。考察了pH值、温度和流速对柱除镍能力的影响。通过X射线衍射分析（XRD）和质子诱导X射线发射（PIXE）光谱在几个连续的金属挑战之后证实了Ni/HUP细胞结合的沉积物的组成，并且讨论了Ni（2+）通过离子交换嵌入到HUP的层间空间中从溶液中去除的机制。镍选择性地回收使用柠檬酸盐或酒石酸盐从柱。再生柱在整个重复Ni挑战和解吸循环中有效地起Ni去除作用。(c)John Wiley & Sons，Inc. Biotechnol Bioeng 54：319-328，1997.
Ni(2+) was removed quantitatively from aqueous flows by columns loaded with polycrystalline hydrogen uranyl phosphate (HUP) bound to immobilized cells of Citrobacter sp. The columns functioned effectively in Ni uptake/regeneration cycles; five cycles were completed without significant decrease in the Ni-removing capacity of the column. The influence of pH, temperature, and flow rate on the Ni-removing capacity of the columns was examined. The composition of the Ni/HUP cell-bound deposits was confirmed by X-ray diffraction analysis (XRD) and proton-induced X-ray emission (PIXE) spectroscopy following several consecutive metal challenges and is discussed in relation to the mechanism of Ni(2+) removal from solution via ion-exchange intercalation into the interlayer space of HUP. Ni was selectively recovered from the columns using citrate or tartrate. The regenerated columns functioned effectively in Ni removal throughout repeated Ni challenge and desorption cycles. (c) 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 54: 319-328, 1997.