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Ciência e Agrotecnologia
On-line version ISSN 1981-1829
GONCALVES, Maraísa et al. Production of charcoal from maté waste to remove organic contaminants from aqueous solution. Ciênc. agrotec. [online]. 2007, vol.31, n.5, pp. 1386-1391. ISSN 1981-1829. http://dx.doi.org/10.1590/S1413-70542007000500017.
In this work we present a new adsorbent material, obtained by maté waste pyrolisis. The resulting charcoal presented high specific area when compared with other pyrolized materials and also high capacity to remove organic contaminants from aqueous solution. The charcoal showed specific area of 344, 191 and ~0.3 m2 g-1 for sample Mate 1, Mate 2 and Mate 3, respectively. According to the corresponding adsorption isotherm these materials present good adsorption capacity for reactive textile and methylene blue dyes and the herbicide atrazine. Adsorption maxima were respectively 16, 230 and 35 mg g-1 for such substances, when sample Mate 1 was used.
Keywords : Maté; waste; charcoal; adsorption process.