Tratamiento Electrolítico de Residuos Industriales con Metales Pesados

Abstract

This work consisted on the electrolytic treatment of an industrial waste (mud) from a graphical company, having important contents of several metals. The muds were subjet to an electrolytic treatament by applying a potencial
defference of ten volts (direct current). An electrolytic cell with graphite electrodes, including two compartments for the electrodes, was used. Distilled water was added daily to mantein the initial level in order to compensate evaporation
losses. pH and Eh were monitored; the experimentstarted at nearly neutral pH and was run until local pH values were estabilized. Forty elementswere determined and the information was processed with statistical software Surfer 8. The
results show diverse behavior according to at least three main patterns: displacement towards the cathode, displacement towards the anode, lateral displacement or irregular. Under these conditions, the results demonstrate that the used
process is not absolutely applicable to decontaminate the product.