ORIGINAL RESEARCH
Removal of Cadmium and Lead from Aqueous
Solution by Calcite
Ö. Yavuz, R. Guzel, F. Aydin, I. Tegin, R. Ziyadanogullari
Dicle University, Faculty of Science and Art, Department of Chemistry, TR 21280, Diyarbakir, Turkey
Pol. J. Environ. Stud. 2007;16(3):467-471
KEYWORDS
ABSTRACT
The removal of toxic cadmium(II ) and lead(II ) from aqueous solutions was investigated using calcite, which
is inexpensive and widespread over the globe, as the effective inorganic adsorbent. The experimental data of the
removal equilibrium were correlated by either the Langmuir or Freundlich equations. Results indicate that the
Langmuir model gave a better fit to the experimental data than the Freundlich equation. Maximum adsorption
capacities were determined as 18.52 mg/g Cd and 19.92 mg/g Pb for natural calcite at 25°C, respectively.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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