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Studies on adsorption of uranium (VI) from aqueous solution by wheat straw

  1. Xiao Wang1,
  2. Liangshu Xia2,*,
  3. Kaixuan Tan2,
  4. Weina Zheng1

Article first published online: 23 AUG 2011

DOI: 10.1002/ep.10582

Issue

Environmental Progress & Sustainable Energy

Environmental Progress & Sustainable Energy

Volume 31, Issue 4, pages 566–576, December 2012

Additional Information

How to Cite

Wang, X., Xia, L., Tan, K. and Zheng, W. (2012), Studies on adsorption of uranium (VI) from aqueous solution by wheat straw. Environ. Prog. Sustainable Energy, 31: 566–576. doi: 10.1002/ep.10582

Author Information

  1. 1

    School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, People's Republic of China

  2. 2

    School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, Hengyang, Hunan 421001, People's Republic of China

*School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, Hengyang, Hunan 421001, People's Republic of China

Publication History

  1. Issue published online: 16 OCT 2012
  2. Article first published online: 23 AUG 2011

Funded by

  • Dr. Initial Fund of University of South China. Grant Number: 2010XQD22
  • Hunan Provincial Natural Science Foundation of China. Grant Number: 10JJ3037
  • Scientific Research Fund of Hunan Provincial Education Department. Grant Number: 09w025

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Keywords:

  • wheat straw;
  • uranium;
  • modified;
  • adsorption;
  • mechanism

Abstract

A fundamental investigation on the removal of uranium from aqueous solutions by wheat straw was conducted in batch conditions. The influence of different experimental parameters such as modified methods, pH, contact time, adsorbent dose, initial concentration, and temperature, on the kinetics of uranium removal was studied. The results showed that the higher adsorption rate of uranium on wheat straw was modified by NaOH. At 303 K and pH was 3.0, the saturation adsorption was up to 1.20 mg/g at approximately 120 min. The uranium uptake was quantitatively evaluated using sorption isotherms and the correlation coefficients showed that the Freundlich model gave a better fit than the Langmuir equation. The process followed a pseudo-second-order kinetics. Scanning electron microscope coupled with Fourier transform infrared analysis for wheat straw, demonstrated that uranium-containing sites existed on the surface structure with hydroxyl, carbonyl, P[BOND]O and Si[DOUBLE BOND]O groups. © 2011 American Institute of Chemical Engineers Environ Prog, 2011

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