Study of adsorption performance and adsorption mechanism for U(VI) ion on modified polyacrylonitrile fibers

被引：24

作者：

Wang, Fan ^{[1
]}

Wang, Xinglei ^{[1
]}

Jiang, Yunjie ^{[1
]}

Niu, Zhiwei ^{[1
]}

Wu, Wangsuo ^{[1
,2
,3
]}

Zhang, Hongxia ^{[1
,2
,3
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China

[2] Lanzhou Univ, Key Lab Special Funct Mat & Struct Design, Minist Educ, Lanzhou 730000, Gansu, Peoples R China

[3] Lanzhou Univ, Engn Res Ctr Neutron Applicat Technol, Minist Educ, Lanzhou 730000, Gansu, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 323卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ACPAN fibers; Adsorption; Uranium; SURFACE MODIFICATION; CARBON NANOTUBES; URANIUM; AMIDOXIME; ADSORBENTS; RECOVERY; SEAWATER; SORPTION; REMOVAL; TETRACYCLINE;

D O I：

10.1007/s10967-019-06928-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The modified polyacrylonitrile fibers (ACPAN fibers) was synthesized by oximation reaction and alkaline hydrolysis. ACPAN fibers was characterized by means of SEM, FTIR, XPS and elementary analysis. The effects of contact time, solid-liquid ratio, pH, ionic strength, initial concentration and temperature on U(VI) adsorption onto ACPAN fibers was studied and the adsorption mechanism was also discussed. The experimental data fitted well pseudo-second-order kinetics model and Freundlich and D-R models, and thermodynamic process was an endothermic and spontaneous reaction. The maximum adsorption capacity was 163 mg/g, and U(VI) and ACPAN fibers possible formed more stable penta-coordination complexation. This paper highlighted ACPAN fibers as a good adsorbent to remove efficiently and economically uranyl from radioactive wastewater.

引用

页码：365 / 377

页数：13

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