Investigate technological parameters and allowable concentrations of some impurities in electrolytic solution to recover nickel from waste sludge of chromite ore Co Dinh - Thanh Hoa

Abstract

The influence of technological parameters such as nickel concentration, pH, temperature, current density, additive concentration on the electrolysis of nickel in sulfate solution has been studied by linear sweep voltammetry (LSV), scanning electron microscopy (SEM), copper coulometry and visual evaluation. The allowable concentration of some impurities in the electrolysis solution is also determined through Energy-dispersive X-ray (EDX) spectroscopy analysis. The obtained results are the basis for establishing a suiTable electrolysis tank to recover nickel from waste sludge of limonite ore Co Dinh -Thanh Hoa.