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Batch Adsorption and Column Transport Studies of 2,4,6-Trinitrotoluene in Chinese Loess

  • Bo Zhou
  • Yaoguo WuEmail author
  • Jiangwei Chan
  • Sichang Wang
  • Sihai Hu
Article

Abstract

In present study, batch and column tests were conducted to investigate the kinetic and thermodynamic characteristics of the adsorption and transport of 2,4,6-trinitrotoluene (TNT) in Chinese loess with specific focus on the role of inherent colloid particles. Batch tests showed that a lot of TNT was absorbed in suspended colloid particles, and its adsorption reached equilibrium after about 10 h, the adsorption process can be best-fit by the pseudo-second order kinetic and Freundlich model. The adsorption was spontaneous, endothermic process, implying the adsorbed TNT is likely to release from soil matrix. These portend that the adsorbed TNT has a potential to co-transport with inherent colloid particles in loess. The column tests identified the potential, and showed TNT transport had obvious retardation effect, which may be ascribed to the release and transport of inherent colloidal particles as a key carrier. These findings are helpful to evaluate the loess interception and antifouling performance.

Keywords

Chinese loess 2,4,6-Trinitrotoluene (TNT) Adsorption Transport Inherent colloid particles 

Notes

Acknowledgements

We thank editors and reviewers for their efforts to improve this article and further research sincerely. The authors gratefully acknowledge the financial support by the National Natural Science Foundation of China (No. 41502240), and the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2017JM4005).

Supplementary material

128_2019_2578_MOESM1_ESM.docx (3 mb)
Supplementary material 1 (DOCX 3084 KB)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Bo Zhou
    • 1
  • Yaoguo Wu
    • 1
    Email author
  • Jiangwei Chan
    • 1
  • Sichang Wang
    • 1
  • Sihai Hu
    • 1
  1. 1.Department of Applied ChemistryNorthwestern Polytechnical UniversityXi’anChina

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