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Journal of Central South University

, Volume 20, Issue 4, pp 1010–1014 | Cite as

Degradation of aniline by Fe2+-activated persulfate oxidation at ambient temperature

  • Yong-qing Zhang (张永清)Email author
  • Xiao-fang Xie (谢晓芳)
  • Wei-lin Huang (黄伟林)
  • Shao-bin Huang (黄少斌)
Article

Abstract

The aniline degradation by persulfate activated with ferrous ion (Fe2+) was investigated in batch reactor at ambient temperature. The experimental factors in aqueous solutions including persulfate concentration, Fe2+ concentration, pH and ionic strength level were discussed. It is demonstrated that, aniline degradation rate increases with increasing persulfate concentration, but much more ferrous ion inhibits the aniline degradation. When the aniline concentration is 0.10 mmol/L, the maximum aniline degradation occurs at the S2O8 2− to Fe2+ molar ratio of 250/5 at pH 7.0. In the pH range of 5.0–8.5, increasing pH causes higher aniline degradation. What’s more, the increase of ionic strength in solution causes inhibiting in the reaction. Produced intermediates during the oxidation process were identified using gas chromatography-mass spectrometry (GC-MS) technology. And degradation pathways of aniline were also tentatively proposed.

Key words

aniline ferrous ion persulfate degradation 

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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Yong-qing Zhang (张永清)
    • 1
    • 2
    Email author
  • Xiao-fang Xie (谢晓芳)
    • 1
  • Wei-lin Huang (黄伟林)
    • 3
  • Shao-bin Huang (黄少斌)
    • 1
  1. 1.Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, College of Environment and EnergySouth China University of TechnologyGuangzhouChina
  2. 2.Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologyGuangzhouChina
  3. 3.Department of Environmental Sciences, RutgersThe State University of New JerseyNew BrunswickUSA

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