Evaluación de un humedal artificial a escala de laboratorio para la remoción de plomo y cobre presentes en drenajes sintéticos de minas

Abstract

Abstract: Mine drainage originated during the mining project phase becomes a problem environmental. In this context, the objective of this research was to evaluate the efficiency removal of lead and copper from synthetic mine drainage through a constructed wetland on a laboratory scale. For this, a three-compartment system was considered. composed of three different substrates, 90% gravel, 81% gravel - 9% cane bagasse sugar and 81% gravel - 9% zeolite, and achira (Canna Indica) as a macrophyte, with a period of two-month stabilization. The results showed, after six weeks of evaluation, a maximum Pb removal of 96.52%, and maximum Cu of 99.28% in the effluent, an absorption of up to 95.23% of Pb and 97.39% of Cu in the roots, 0% of Pb and Cu in the leaves. No significant differences were found between substrates. The feasibility of this technology for the treatment of water contaminated with metals, but its application in field will allow us to evaluate more real positive impacts.