Amidoximated cellulose fiber membrane for uranium extraction from simulated seawater

Ying Wang; Yaopeng Zhang; Qian Li; Yanxiang Li; Lixia Cao; Wangliang Li

doi:10.1016/j.carbpol.2020.116627

Amidoximated cellulose fiber membrane for uranium extraction from simulated seawater

Carbohydr Polym. 2020 Oct 1:245:116627. doi: 10.1016/j.carbpol.2020.116627. Epub 2020 Jun 12.

Authors

Ying Wang¹, Yaopeng Zhang², Qian Li³, Yanxiang Li⁴, Lixia Cao⁵, Wangliang Li⁶

Affiliations

¹ Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
² State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, China.
³ Logistics University of PAPF, Tianjin, 300309, China.
⁴ Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address: yxli@ipe.ac.cn.
⁵ Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
⁶ Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address: wlli@ipe.ac.cn.

PMID: 32718662
DOI: 10.1016/j.carbpol.2020.116627

Abstract

Uranium extraction from seawater is considered as an efficient strategy to meet the increasing demands of uranium. Amidoxime has been reported as one of the most efficient groups for uranium affinity. Herein, amidoximated cellulose fibers were synthesized by grafting polyacrylonitrile (PAN) onto cellulose fibers followed by amidoxime modification. The amidoximated cellulose fibers showed maximum adsorption capacity of 52.88 mg g^-1 (pH = 5.0), and its static adsorption process was well fitted with Langmuir model and Pseudo-second-order kinetics. The adsorption mechanism was attributed to the chelating reaction between uranyl complexes and amidoximated cellulose fibers. The prepared fibers were further fabricated into nonwoven membrane for dynamic adsorption, and the breakthrough curves were well fitted to Dose-Response model. The amidoximated cellulose fiber membrane showed a good adsorption capacity of 1.22 mg g^-1 at pH 8.0 after filtrating 10.0 L simulated seawater, demonstrating promising efficient engineering materials for uranium extraction from seawater.

Keywords: Amidoxime; Cellulose fiber; Dynamic adsorption; Membrane; Uranium extraction.

MeSH terms

Acrylic Resins / chemistry
Adsorption
Cellulose / chemical synthesis
Cellulose / chemistry*
Filtration / methods
Hydrogen-Ion Concentration
Hydrophobic and Hydrophilic Interactions
Kinetics
Membranes, Artificial*
Oximes / chemistry*
Photoelectron Spectroscopy
Polymerization
Seawater / chemistry*
Spectroscopy, Fourier Transform Infrared
Uranium / chemistry*

Substances

Acrylic Resins
Membranes, Artificial
Oximes
amidoxime
polyacrylonitrile
Uranium
Cellulose