Removal of metal ions from aqueous solution by activated carbons obtained from different raw materials
- 1 June 1994
- journal article
- research article
- Published by Wiley in Journal of Chemical Technology & Biotechnology
- Vol. 60 (2) , 177-182
- https://doi.org/10.1002/jctb.280600210
Abstract
The adsorption of Pb2+, Cu2+, Zn2+ and Cd2+ from aqueous solution at 293 K by activated carbons obtained from different raw materials was studied. These carbons were prepared by water vapour pyrolysis of the raw materials—apricot stones, coconut shells and lignite coal. The influence of the solution pH on the adsorption processes has been studied. The presence of other metal ions in the solution decreases the adsorption of each of the ions. The selective adsorption of the metal ions is observed but the ones preferentially adsorbed do not completely prevent the adsorption of other ions. The chemical nature of the carbon surface and metal ions have great significance for the adsorption process.Keywords
This publication has 6 references indexed in Scilit:
- Adsorption of the ions of zinc, cadmium, copper, and lead on oxidized anthraciteCarbon, 1992
- Adsorption from mixtures containing mono- and bivalent cations on insoluble oxides and a revision of the interpretation of points of zero charge obtained by titrationJournal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1982
- A variation of adsorption apparatus for the rapid determination of solid surfacesJournal of Catalysis, 1970
- Chemical Identification of Surface GroupsPublished by Elsevier ,1966
- 786. Studies in adsorption. Part XI. A system of classification of solution adsorption isotherms, and its use in diagnosis of adsorption mechanisms and in measurement of specific surface areas of solidsJournal of the Chemical Society, 1960
- Phenomenological Theory of Ion Solvation. Effective Radii of Hydrated IonsThe Journal of Physical Chemistry, 1959