通讯机构：
[Zhang, Xiaowen] U;Univ South China, Key Lab Radioact Waste Treatment & Disposal, Hengyang 421001, Hunan, Peoples R China.
关键词：
Uranium;α-FeOOH;Phosphate;Sorption;Mechanism
摘要：
AbstractGoethite is a stable and widespread mineral in soil, which affects the transportation and immobilization of heavy metals in soil. Here, the three-dimensional flower-like goethite (TDFLG) was synthesized by refluxing precipitation method. The modified three-dimensional flower-like goethite (MTDFLG) was prepared by NaH2PO4 with dipping method. The obtained samples were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) analysis, N2 adsorption–desorption (BET), and X-ray diffraction (XRD). SEM images showed that the modification of phosphate had no major changes on the morphology of the original sample and the morphology of MTDFLG after adsorbed U(VI) had clearly change. For the goethite and modified goethite, the BET-specific surface area was 229.96 and 203.17m2/g, respectively. Moreover, the effects of adsorption time, sorbent dose, solution pH, and initial uranium concentration on the uranium adsorption behaviors were investigated using the two materials as adsorbent for the treatment of uranium-containing wastewater. The results showed that MTDFLG had better adsorption capacity than TDFLG on uranium. The increase in uranium removal on MTDFLG was due to the formation of ternary surface complexes (≡FePO4UO2). TDFLG and MTDFLG followed the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model, which indicated that uranium adsorption on TDFLG or MTDFLG is mainly based on chemisorption, and the maximum adsorption capacity of two adsorbents is 48.24 and 112.36mg/g, respectively.
作者机构：
[叶勇军; 江俊廷; 钟永明; 谢超] School of Environment Protection and Safety Engineering, University of South China, Hengyang;421001, China;[丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[叶勇军] 421001, China <&wdkj&> Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[叶勇军; 江俊廷; 丁德馨; 钟永明; 谢超] 421001, China
通讯机构：
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构：
[肖德涛; 张宇轩] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[钟永明; 江俊廷; 谢超] School of Environment Protection and Safety Engineering, University of South China, Hengyang, 421001, China;[丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China;[叶勇军] School of Environment Protection and Safety Engineering, University of South China, Hengyang, 421001, China, Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China
通讯机构：
[Ye, Y.] S;School of Environment Protection and Safety Engineering, China
作者机构：
[叶勇军; 王立恒; 李向阳; 谢东; 钟永明; 赵娅利] School of Environment Protection and Safety Engineering, University of South China, Hengyang;421001, China;[丁德馨] Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[叶勇军] 421001, China <&wdkj&> Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[叶勇军; 丁德馨; 王立恒; 李向阳; 谢东; 钟永明; 赵娅利] 421001, China
通讯机构：
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构：
[王立恒; 钟永明; 范楠彬; 赵娅利; 叶勇军] School of Environment Protection and Safety Engineering, University of South China, Hengyang, China;[叶勇军; 丁德馨] Key Discipline Lab for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
通讯机构：
School of Environment Protection and Safety Engineering, University of South China, Hengyang, China
作者机构：
[丁德馨; 李峰] Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China;[钟永明] School of Environment Protection and Safety Engineering, University of South China, Hengyang 421001, China;[叶勇军] Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China <&wdkj&> School of Environment Protection and Safety Engineering, University of South China, Hengyang 421001, China
通讯机构：
Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
