Abstract
In this work, the removal of zinc and lead (Zn2+and Pb2+) from aqueous solutions was investigated using a Brazilian bofe clay. The mineral clays were characterized through XRD analysis and CEC. A finite bath system was used to evaluate the main effects of pH values in the range from 3.0 to 5.0 and Zn2+and Pb2+initial concentrations (from 10 to 50 mg/L) on the removal process capacity. The combinations of the XRD and CEC showed characteristics of the group smectite clays. Up to 3.38 mg/g of Lead removal capacity (99.97% efficiency) was reached and values as high as 98.47 % of removal Zinc efficiency and 3.93 mg/g of removal capacity were reached in the assays. Thus indicating that the use of Bofe clay has great potential in the removal of Lead and Zinc.
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