J4 ›› 2011, Vol. 41 ›› Issue (1): 247-251.

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Ligand-Enhanced Nitrobenzene Attenuation Process in Subsurface Environment by Iron(Ⅱ)

 ZHAO Yong-sheng, LI Jing-jie, |Dong Jun, ZHANG Zhu-lin, ZHAO Xue-lian, SUN Meng   

  1. College of Environment and Resources, Jilin University, Changchun 130026, China
  • Received:2010-04-11 Online:2011-01-26 Published:2011-01-26

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Abstract:

The effects of ligands on the attenuation of nitrobenzene by Fe (Ⅱ) in static experiment. Results indicated that the ligand species and concentration had significant effects on the attenuation of nitrobenzene. When Fe (Ⅱ) concentration was 5 mmol/L, the Fe (Ⅱ)-cysteine complexe had the best effect on nitrobenzene attenuation and the removal rate of nitrobenzene was 86.16%. The highest removal rate of nitrobenzene was above 65% when the concentration of ligands was 50 mmol/L; When the concentration of Fe (Ⅱ) and ligands was stable, the nitrobenzene concentration also had effects on its attenuation. The highest degradation rate was achieved at the nitrobenzene concentration of 100 mg/L and the degradation rate decreased as the increasing nitrobenzene concentration. In the process of nitrobenzene attenuation by Fe (Ⅱ)-complexe, the Fe (Ⅱ) was oxidated as Fe (Ⅲ).

Key words: nitrobenzene, ligands, Fe（Ⅱ）, complex

CLC Number: 

  • X523
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