Adsorption of copper, cadmium and silver from aqueous solutions onto natural carbonaceous materials

P. Hanzlík, J. Jehlička, Z. Weishauptová and O. Šebek
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P. Hanzlík: Facultyof Science, Charles University in Prague, Czech Republic
J. Jehlička: Facultyof Science, Charles University in Prague, Czech Republic
Z. Weishauptová: Facultyof Science, Charles University in Prague, Czech Republic
O. Šebek: Facultyof Science, Charles University in Prague, Czech Republic

Plant, Soil and Environment, 2004, vol. 50, issue 6, 257-264

Abstract: Twelve carbonaceous materials were investigated for adsorption of Cd, Cu and Ag from water solutions. Before the adsorption experiments the chemical and structural characterization of all materials were made. The batch adsorption experiment was used. The kinetic of the adsorption process was very fast for the first five hours but very slow for approximately the next 65 hours. Nevertheless the maximum amount of metal removed was achieved during the first stage of about five hours. Biological materials (milled wood, bark, cork) exhibited a very low affinity for adsorption of metals. The best results were obtained for materials in an intermediate degree of carbonisation with a high content of oxygen rich functional groups. Although the highly carbonised materials exhibited low ability to adsorb copper or cadmium, their capacity to bind silver was very high.

Keywords: adsorption; copper; cadmium; silver; wood; peat; coal; activated carbon (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:50:y:2004:i:6:id:4030-pse

DOI: 10.17221/4030-PSE

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