Degradation of nitroaromatic compounds: a novel approach using iron from laterite soil
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Date
2018
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Publisher
Springer Verlag
Abstract
The Fenton’s oxidation process has been found to be a simple and economical method for the treatment of nitroaromatic compounds in water. In the present study, the iron extracted from the laterite soil was used as a catalyst and optimization of pH, hydrogen peroxide concentration and iron concentration was studied for different initial concentrations of 2-nitroaniline (2-NA), 3-nitroaniline (3-NA) and 4-nitroaniline (4-NA). The optimum pH obtained was 2.5 for 2-NA and 3-NA and 3 for 4-NA. The maximum removal efficiency obtained was 85.3%, 84.3% and 98.7% for 0.5 mM initial concentration at a hydrogen peroxide concentration of 3.5 mM, 4.5 mM and 5 mM for 2-NA, 3-NA and 4-NA, respectively, with a constant iron concentration of 0.05 mM. © 2018, The Author(s).
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Keywords
Aromatic compounds, Catalysts, Hydrogen peroxide, Oxidation, Soils, Water treatment, Fenton’s oxidation, Hydrogen peroxide concentration, Initial concentration, Iron concentrations, Iron from laterite as a catalyst, Laterite soils, Nitroanilines, Nitroaromatic compound, Oxidation process, ]+ catalyst, Iron, catalyst, concentration (composition), degradation, hydrogen peroxide, iron, laterite, oxidation, pH
Citation
Applied Water Science, 2018, 8, 5, pp. -