Title of article
SORPTION AND DESORPTION STUDIES OF METALLIC ZINC ON AN ALLUVIAL SOIL
Author/Authors
Tiwari, R. P. Motilal Nehru National Institute of Technology - Department of Civil Engineering, India , Bala Ramudu, P. Motilal Nehru National Institute of Technology - Department of Civil Engineering, India , Srivastava, R. K. Motilal Nehru National Institute of Technology - Department of Civil Engineering, India , Gupta, M. K. Kamla Nehru Institute of Technology - Department of Civil Engineering, India
From page
139
To page
146
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.
Keywords
Sorption , isotherms , desorption , zinc
Journal title
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
Journal title
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
Record number
2586670
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