Sangami, S.Manu, B.2026-02-052017Applied Water Science, 2017, 7, 8, pp. 4269-428021905487https://doi.org/10.1007/s13201-017-0559-8https://idr.nitk.ac.in/handle/123456789/25404In this study Fenton’s oxidation of dicamba in aqueous medium was investigated by using the response surface methodology. The influence of H<inf>2</inf>O<inf>2</inf>/COD (A), H<inf>2</inf>O<inf>2</inf>/Fe2+ (B), pH (C) and reaction time (D) as independent variables were studied on two responses (COD and dicamba removal efficiency). The dosage of H<inf>2</inf>O<inf>2</inf> (5.35–17.4 mM) and Fe2+ (0.09–2.13 mM) were varied and optimum percentage removal of dicamba of 84.01% with H<inf>2</inf>O<inf>2</inf> and Fe2+ dosage of 11.38 and 0.33 mM respectively. The whole oxidation process was monitored by high performance liquid chromatography (HPLC) along with liquid chromatography/mass spectrometry (LC/MS). It was found that 82% of dicamba was mineralized to oxalic acid, chloride ion, CO<inf>2</inf> and H<inf>2</inf>O, which was confirmed with COD removal of 81.53%. The regression analysis was performed, in which standard deviation (<4%), coefficient of variation (<8), F value (Fisher’s Test) (>2.74), coefficient of correlation (R2 = Radj2) and adequate precision (>12) were in good agreement with model values. Finally, the treatment process was validated by performing the additional experiments. © 2017, The Author(s).Chemical oxygen demandChlorine compoundsHerbicidesHigh performance liquid chromatographyOxalic acidOxidationRegression analysisSurface propertiesWeed controlAgriculture runoffAqueous mediaDicambaFenton’s processIndependent variablesOptimisationsOxidation processRemoval efficienciesResponse-surface methodologyS-processIron compoundsaqueous solutionherbicideoptimizationoxidationresponse surface methodologyrunoffwater quality