Erva mate é a bebida do tipo chá mais popular na América do Sul. Consequentemente, uma grande quatidade de resíduos da erva já usada é gerada, podendo ser usada na remoção de metais. Neste estudo, foi avaliada a capacidade das folhas de erva-mate esgotadas na remoção de metais. A maior adsorção foi observada em pHs abaixo de 5. A capacidade de adsorção das folhas de erva-mate foi de 12,28, 11,77 e 8,80 mg g -1 para Pb(II), Cr(III) e Cr(VI), respectivamente.Yerba mate is the most popular tea-like beverage of South America. Consequently, there is a huge generation of residues of exhausted yerba mate and these may be used for removal of metals. The capability of exhausted yerba mate leaves in the removal of metals was evaluated in this study. The greatest adsorption was found to be at pHs below 5 and the adsorption capacity was 12.28, 11.77 and 8.80 mg g -1 for Pb(II), Cr(III) and Cr(VI), respectively.
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