Dissolution Kinetics of Nickel Ferrite in Chelating and Reducing Agents

抄録

As a first step towards developing a decontaminating solution, the dissolution of synthetically prepared nickel ferrite was studied in low concentrations (<1g/l) of EDTA and oxalic acid individually and in combination. The ratio of the molar concentration of the ligand to that of the total iron dissolved was varied from 1 to 4. The dependence of the rate was linear in the case of EDTA and Langmurian in the case of oxalic acid. The effect of addition of low concentrations of citric acid, formic acid, ascorbic acid and Fe(II)-EDTA to EDTA solutions was also studied. The effect of pH in the range of 1.48.7, on the kinetics of dissolution in EDTA and oxalic acid medium was also determined.