Elucidating the binding configuration of uranium at the biotite-water interface

Understanding the binding configuration of uranium on biotite is crucial for elucidating the environmental behavior of U(VI) and addressing emergency scenarios in disposal repositories. This investigation demonstrated that U(VI) adsorption on biotite was significantly affected by pH, while a lesser...

Full description

Saved in:
Bibliographic Details
Published inJournal of radioanalytical and nuclear chemistry Vol. 332; no. 9; pp. 3845 - 3858
Main Authors Zhao, Xiaolan, Wu, Hanyu, Lu, Meng, Niu, Zhiwei, Pan, Duoqiang, Wu, Wangsuo
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.09.2023
Springer
Springer Nature B.V
Subjects
Adsorption
Anaerobic conditions
Analysis
Binding
Biotite
Chemistry
Chemistry and Materials Science
Configurations
Diagnostic Radiology
Hadrons
Heavy Ions
Humic acid
Humic acids
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Photoelectrons
Physical Chemistry
Uranium
X ray photoelectron spectroscopy
X-ray spectroscopy
Reduction
Uranium
Adsorption
Biotite
Online AccessGet full text

Cover

More Information
Summary:Understanding the binding configuration of uranium on biotite is crucial for elucidating the environmental behavior of U(VI) and addressing emergency scenarios in disposal repositories. This investigation demonstrated that U(VI) adsorption on biotite was significantly affected by pH, while a lesser impact from ionic strength. Moreover, the presence of phosphate and humic acid (HA) exerted a substantial enhancing influence on U(VI) adsorption (adsorption rate increased by over 20%). X-ray photoelectron spectroscopy (XPS) analysis revealed that elevated Fe(II) contents within biotite structures facilitated the reduction of partial U(VI) to form U(V/IV)/U(IV), i.e., mineralization products, under both aerobic and anaerobic conditions.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-023-09058-1