Journal
WATER SCIENCE AND TECHNOLOGY
Volume 63, Issue 7, Pages 1434-1440Publisher
IWA PUBLISHING
DOI: 10.2166/wst.2011.325
Keywords
aniline; in situ chemical oxidation (ISCO); persulfate; sulfate free radical
Funding
- Ministry of Education [P9823]
- National Science Council, Taiwan [NSC 96-2628-E-041-002-MY3]
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Ferrous catalyzed persulfate oxidation of dissolved aniline was investigated in aqueous systems under a variety of ferrous ion concentrations and temperature. Result showed that the addition of ferrous ions accelerated the degradation of aniline by persulfate. For the thermally activated persulfate oxidation experiment, the optimum persulfate/aniline concentration ratio at 30 degrees C was at 5.4 mM or 20/1. This ratio gave the highest aniline removal of 45%. For the ferrous ion catalyzed persulfate oxidation experiment, there was marginal difference in the result for the various ferrous ion/oxidant molar ratios. Thus, another series of experiment was conducted to determine the optimum ratio and a ferrous ion/persulfate molar ratio of 1.25/1 showed the highest removal efficiency.
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