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The current study focusses on the uncatalyzed potassium mono persulfate oxidation of ortho aminophenol to develop a method for its removal from water samples affected by it. Kinetic spectrophotometric analysis was done to study the effect of reaction pH, initial ortho aminophenol concentrations, initial oxone (potassium monopersulfate) concentrations, temperature, the effect of solvent and presence of ions in the reaction under study. All the kinetic parameters confirmed the fractional-order kinetic model. Thermodynamic parameters like change in enthalpy, change in entropy, pre-exponential factor, activation energy and Helmholtz free energy were investigated and it has concluded that this oxidation reaction was favorable and endothermic. The activation energy for removal of ortho aminophenol was found to be 74.096kJ/mol, which was compared with previous results. The optimum pH for this process was found to be 7.0 and the temperature was 32-38oC. Hence, the results suggested that this method could be applied as a low-cost effective method, considering the ease of availability of chemicals, their non-toxic nature, low cost and the period for completion of the reaction.

rasayan journal of chemistry/rasayan journal of chemistry

A KINETIC SPECTROPHOTOMETRIC ANALYSIS OF OXIDATION OF A POTENTIAL POLLUTANT ORTHO AMINOPHENOL BY POTASSIUM MONOPERSULFATE FOR ITS CONVERSION INTO LESS TOXIC COMPOUND