%0 Journal Article
%T Comparative study of EVA-Cloisite  20A and heat-treated EVA-Cloisite  20A on heavy-metal adsorption properties
%A DS Dlamini
%A AK Mishra
%A BB Mamba
%J Water SA
%D 2012
%I Water Research Commission
%X Ethylene vinyl acetate (EVA)/ Cloisite  20A (C20A) composite fabricated via the melt-blending method was used for the development of a heavy-metal adsorbent through acid and heat treatment. Heat-treated composites were produced at 400¡ãC to 1 000¡ãC in air and N2 atmospheres. The materials were characterised through TGA, FT-IR, contact angle and Zetasizer. Treating EVA/C20A composites with H2SO4 at 130¡ãC reduced the contact angle from 99.73¡ã to 30.40¡ã. The acid-functionalised composite was tested for the removal of Pb2+ and an adsorption capacity of 49 mg¡¤g-1 was recorded while the heat-treated composite exhibited an adsorption capacity of 153 mg¡¤g-1.
%U http://www.ajol.info/index.php/wsa/article/view/81029