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Electrochemical Investigation of Binding of Heavy Metal Ions to Turkish Lignites

✍ Scribed by Erol Pehlivan; Amie Richardson; Petr Zuman

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
223 KB
Volume
16
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

Adsorption and desorption of Cu^2+^, Pb^2+^, Cd^2+^, Ni^2+^ and Zn^2+^ ions on samples of lignites (young brown coal) from three areas in the vicinity of Konya (Anatolia, Turkey) were followed using the polarographic method of analysis. This method enables the determination of free metal ions in suspensions containing both small and colloidal particles of lignite. Effects of pH, nature of the metal ion, and origin of the lignite on its adsorption capacity were followed. Binding is only between 5 and 30% reversible, indicating that ion exchange is not the predominant factor. The role of the size and shape of cavities inside pulverized lignite and of the functional groups inside these cavities was considered.

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