Remoción de as de aguas residuales de procesos mineros hidrometalúrgicos mediante electrocoagulación

Abstract

The objective of this research project was to remove As in wastewater from hydrometallurgical mining processes using the electrocoagulation technique. Synthetic water with arsenic at a concentration of 2 ppm was used, adjusting critical variables such as pH and time in three trials (E1, E2, E3) at a constant flow rate of 15 mL/min. The best test obtained was used to evaluate the percentage removal of hydrometallurgical wastewater. According to the results obtained, the highest arsenic removal in synthetic water was achieved in 90 minutes in tests E1, E2 and E3, with values of 93.8 %, 96.98 % and 88.29 %, respectively. The best percentage of arsenic removal in synthetic water was obtained in E2. Finally, the removal of As from hydrometallurgical wastewater was evaluated and reached a percentage of 95.12 % in 90 minutes of electrocoagulation.