Adsorption of uranium（Ⅵ） onto amidoxime-functionalized ultrahigh molecular weight polyethylene fibers from aqueous solution

Amidoxime-functionalized ultra-high molecular weight polyethylene fibers（UHMWPEF-AO） were used to absorb uranium U（VI） from aqueous solutions.In this paper,we study effects of pH,initial U（VI） concentration,contact time,and temperature on U（VI） adsorption by UHMWPEF-AO.The adsorption process agrees...

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Published in核技术：英文版 Vol. 28; no. 7; pp. 97 - 104
Main Author Chun-Yu Xie Shi-Pei Jing Yu Wang Xiao Lin Hong-Liang Bao Cheng-Zhi Guan Chan Jin Jian-Qiang Wang
Format Journal Article
LanguageEnglish
Published 2017
Subjects
FT-IR
偕胺肟基
吸附性能
扫描电子显微镜
水溶液
烧结过程
超高分子量聚乙烯纤维
铀（Ⅵ）
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Summary:Amidoxime-functionalized ultra-high molecular weight polyethylene fibers（UHMWPEF-AO） were used to absorb uranium U（VI） from aqueous solutions.In this paper,we study effects of pH,initial U（VI） concentration,contact time,and temperature on U（VI） adsorption by UHMWPEF-AO.The adsorption process agrees well with pseudo-second-order and Langmuir model.UHMWPEFAO exhibits excellent adsorptive performance for U（VI）with a maximum adsorption capacity of 176.12 mg/g at pH4 and 298 K.The structures of UHMWPEF-AO and U（VI）-loaded UHMWPEF-AO are characterized by FT-IR and nano-CT.U（VI）-loaded UHMWPEF-AO is sintered after adsorption process to recycle absorbed U（VI）.Powders collected after sintering process are examined by scanning electron microscopy and X-ray diffraction.These results indicate that UHMWPEF-AO is a promising candidate to remove U（VI） from uranium aqueous solutions.
Bibliography:Amidoxime-functionalized ultra-high molecular weight polyethylene fibers（UHMWPEF-AO） were used to absorb uranium U（VI） from aqueous solutions.In this paper,we study effects of pH,initial U（VI） concentration,contact time,and temperature on U（VI） adsorption by UHMWPEF-AO.The adsorption process agrees well with pseudo-second-order and Langmuir model.UHMWPEFAO exhibits excellent adsorptive performance for U（VI）with a maximum adsorption capacity of 176.12 mg/g at pH4 and 298 K.The structures of UHMWPEF-AO and U（VI）-loaded UHMWPEF-AO are characterized by FT-IR and nano-CT.U（VI）-loaded UHMWPEF-AO is sintered after adsorption process to recycle absorbed U（VI）.Powders collected after sintering process are examined by scanning electron microscopy and X-ray diffraction.These results indicate that UHMWPEF-AO is a promising candidate to remove U（VI） from uranium aqueous solutions.
Uranium Adsorption Kinetics Isotherms Sintering
31-1559/TL
ISSN:1001-8042
2210-3147