Journal of Radioanalytical and Nuclear Chemistry

, Volume 321, Issue 3, pp 815–822 | Cite as

Uranium leaching using citric acid and oxalic acid

  • Lingling Xu
  • Hongying YangEmail author
  • Yajie Liu
  • Yipeng Zhou


Citric acid and oxalic acid, the main metabolites of fungi, have different leaching effects on uranium ore. Herein, uranium leaching from a volcano-litho-type uranium ore using citric acid and oxalic acid was studied by performing soaking experiments in incubator shakers using pure water and H2SO4 as controls. The citric acid is advantageous over oxalic acid in terms of the uranium leaching rate (97% and 67%) and speed for 20 days of leaching. These findings will help optimize the isolation and cultivation conditions of organic acid-producing fungi used for uranium leaching.


Uranium leaching Citric acid Oxalic acid Organic acid-producing fungi 



The authors thank Dr. Li Peng (School of Water Resource and Environmental Engineering, East China University of Technology) for the helpful advice and State Key Laboratory of Nuclear Resources and Environment (Nanchang, China). The authors also thank the reviewers for their comments.


This work was supported by the National Nature Science Fund, China [Grant Numbers: 41572231, 41662024, and U1608254]; the Science and Technology Research Project of Jiangxi Provincial Education Department, China [Grant Number: GJJ160563], Jiangxi Provincial Science and Technology Project [Grant Number: 20161BBH8005]; and State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, China [Grant Numbers: ZJKY2017(B)KFJJ01 and ZJKY2017(B)KFJJ02].

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Conflict of interest



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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Lingling Xu
    • 1
    • 2
  • Hongying Yang
    • 1
    Email author
  • Yajie Liu
    • 2
  • Yipeng Zhou
    • 2
  1. 1.School of MetallurgyNortheastern UniversityShenyangChina
  2. 2.School of Water Resource and Environmental EngineeringEast China University of TechnologyNanchangChina

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