Removal of Toxic Substances (Pb²⁺ and Zn²⁺) in Water Using Clay as Natural Smectite Bofe Adsorbent

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.

• Periodical: Materials Science Forum (Volume 820)
• Pages: 535-538
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.820.535
• Online since: June 2015
• Authors: Rochélia Silva Souza Cunha, Joseane Damasceno Mota, Meiry Glaucia Freire Rodrigues
• Keywords: Adsorption, Clay Bofe, Finite Bath, Lead, Zinc

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