Abstract
In this work, zeolite, Controll M.F. 574® was characterized and its adsorption properties were evaluated for the removal of iron (Fe) and manganese (Mn) from natural water, compared with a synthetic solution. Characterization by dispersive X-ray and X-ray diffraction identified a semi-crystalline structure and the presence of magnesium aluminium silicate, quartz and iron and manganese oxides. The results of the adsorption isotherms verified that the adsorption of iron followed a linear model indicating that physisorption occurred. The adsorption of manganese was better adjusted to the Langmuir model, indicating the formation of a monolayer on the surface of the adsorbent. The kinetic results were best adjusted to the pseudo-second-order model with a correlation coefficient of 0.99 for adsorption of both elements. The results showed that the zeolite studies showed good adsorption capacity for Fe (74%) and Mn (66%) in natural water. The concentrations of these metals were below the values permitted by Brazilian legislation.
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