title: Low cost Fenton's oxidative degradation of 4-nitroaniline using iron from laterite.
abstract: The present study aims to establish the use of iron (Fe) from larerite in the case of Fenton's oxidation process which is a simple and cost-effective method for degradation of nitro compounds in effluents and in surface or ground water. 4-nitroaniline (4-NA) degradation by Fenton's oxidation method is the subject of the present study so as to optimize pH, hydrogen peroxide/iron (H/F) ratio at different initial concentrations of 4-NA. The optimum pH obtained was 3. The present study has also established optimum H/F ratio for the different initial concentrations of 4-NA for both conventional and use of Fe from laterite. The maximum removal efficiency of 99.84% was obtained for an H/F ratio of 100 for 0.5 mM initial concentration of 4-NA. The study establishes the use of Fe extracted from locally available laterite soil (LS) as a replacement of Fe salts so as to reduce the cost of the process.
authors: Department of Civil Engineering, NITK, Surathkal, Mangaluru, Karnataka 575025, India E-mail: amritha86@gmail.com.
authors: A S
authors: AS
authors: Amritha
authors: Department of Civil Engineering, NITK, Surathkal, Mangaluru, Karnataka 575025, India E-mail: amritha86@gmail.com.
authors: B
authors: B
authors: Manu
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D014874:Water Pollutants, Chemical; C019498:4-nitroaniline; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide; D007501:Iron