A biomass fiber adsorbent grafted with phosphate/amidoxime for efficient extraction of uranium from seawater by synergistic effect

Xiaoxia Ye; Ruiyang Chi; Zhihao Wu; Jinteng Chen; Yuancai Lv; Chunxiang Lin; Yifan Liu; Wei Luo

doi:10.1016/j.jenvman.2023.117658

A biomass fiber adsorbent grafted with phosphate/amidoxime for efficient extraction of uranium from seawater by synergistic effect

J Environ Manage. 2023 Jul 1:337:117658. doi: 10.1016/j.jenvman.2023.117658. Epub 2023 Apr 1.

Authors

Xiaoxia Ye¹, Ruiyang Chi², Zhihao Wu³, Jinteng Chen⁴, Yuancai Lv⁵, Chunxiang Lin⁶, Yifan Liu⁷, Wei Luo⁸

Affiliations

¹ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: yexiaoxia@fzu.edu.cn.
² Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: 200620062@fzu.edu.cn.
³ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: wzh4016@163.com.
⁴ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: 1710028885@qq.com.
⁵ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: yclv@fzu.edu.cn.
⁶ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: lcx2010@fzu.edu.cn.
⁷ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China. Electronic address: yfanym@fzu.edu.cn.
⁸ Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu, 610065, PR China. Electronic address: luowei@gdut.edu.cn.

PMID: 37011477
DOI: 10.1016/j.jenvman.2023.117658

Abstract

There are approximately 4 billion tons of uranium in the ocean, which is unmatched by the surface. Nevertheless, it's very challenging to extract uranium from the ocean due to the exceedingly low concentration of uranium in the ocean (about 3.3 μg L^-1) as well as high salinity level. Current methods are often limited by selectivity, sustainability, economics, etc. Herein, phosphoric acid group and amidoxime group were grafted to skin collagen fibers through " initiated access" to design a new uranium extraction material, abbreviated as CGPA. Through laboratory simulation experiments, it is concluded that the maximum adsorption capacity of CGPA for uranium reaches 263.86 mg g^-1. It has high adsorption, selectivity, and reusability for uranium. In the actual seawater extraction experiment, CGPA obtained 29.64 μg of uranium after extracting 10.0 L of seawater, and the extraction rate was 90.1%. The adsorbent has excellent effects in kinetics, selectivity, extraction capacity, renewability, etc. In the extraction of uranium from seawater, and is an economically feasible and industrially expandable adsorbent.

Keywords: Collagen fibers; Phosphoric acid and amidoxime functional groups; Seawater; Ultraselective extraction; Uranium extraction.

MeSH terms

Adsorption
Biomass
Phosphates
Seawater
Uranium*

Substances

Uranium
amidoxime
Phosphates