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

  • Fan Wang
  • Xinglei Wang
  • Yunjie Jiang
  • Zhiwei Niu
  • Wangsuo Wu
  • Hongxia ZhangEmail author
Article
  • 9 Downloads

Abstract

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.

Keywords

ACPAN fibers Adsorption Uranium 

Notes

Acknowledgements

The authors thank to the financial support of the National Natural Science Foundation of China (Nos. 21641003 and 21976074).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

10967_2019_6928_MOESM1_ESM.docx (1.5 mb)
Supplementary material 1 (DOCX 1529 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.School of Nuclear Science and TechnologyLanzhou UniversityLanzhouChina
  2. 2.Key Laboratory of Special Function Materials and Structure Design, Ministry of EducationLanzhou UniversityLanzhouChina
  3. 3.Engineering Research Center for Neutron Application Technology, Ministry of EducationLanzhou UniversityLanzhouChina

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