Electrocoagulation as an Alternative for the Removal of Chromium (VI) in Solution

Context: The contamination of water sources by the discharge effluents contaminated with chromium (VI) is a current environmental problem because it toxic pollutant for humans, animals, plants, and microorganisms; can be carcinogenic has high solubility in an aqueous environment. This research aims to study electrochemical removal hexavalent electrocoagulation using iron aluminum electrodes monopolar configuration, evaluating effect residence time, voltage, number on efficiency.
 Methodology: experiments were conducted 3L batch cell, 10 6 stainless steel plates as electrodes, connected at distance 1.5 cm configuration parallel power source. Contaminated solution Cr was treated concentration 50 mg/L, two levels time (20 30 min), voltage V), (6 electrodes).
 Results: After tests, obtained percentages between 60.15 92.9%. most significant positive variable process increase time. It inferred that performs better lower voltages longer times joint contact would performance process, achieving greater removal.
 Conclusions: reduction potential used cost-effective heavy metals from