Sorption and desorption studies of metallic zinc on an alluvial soil
Iranian Journal of Environmental Health Science and Engineering. 2007; 4 (3): 139-146
in English
| IMEMR
| ID: emr-123228
ABSTRACT
The sorption of metallic zinc from the pH-adjusted aqueous solution at varying initial concentrations onto a clay soil through batch equilibrium experiments has been studied. The pH of the initial concentrations ranging between 50 mg/L to 250 mg/L has been varied from 3 to 7. The sorption data fitted very well with both Langmuir and Freundlich isotherm models and Freundlich model gave higher correlation coefficients. The maximum sorption of metallic zinc occurred at pH=6. The pseudo-second order kinetics model was most agreeable with the experimental sorption data, whereas the pseudo-first order model was found to be insufficient. A nonionic surfactant was tested for its desorption potential and was found to be fairly effective at 2% concentration with removal of more than 60% sorbed Zinc
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Soil
/
Soil Pollutants
/
Zinc
Language:
English
Journal:
Iran. J. Environ. Health Sci. Eng.
Year:
2007
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