Thermodynamics of Cadmium Sorption on Different Soils of West Bengal, India
Joint Authors
Paul, Ranjit Kumar
Das, D. K.
Boruah, Romesh K.
Sonar, Indira
Karak, Tanmoy
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-06
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
A sorption study was conducted on different soils collected from five agroecological zones of West Bengal, India, to understand the soil environmental behavior and fate of cadmium.
For this purpose batch adsorption experiments were carried out at the native soil pH and at three different temperatures (25°C, 35°C, and 45°C).
The adsorption data fitted by a linear least squares technique to the different sorption isotherms.
Most data obtained give the good fit to both Freundlich and modified Langmuir isotherms, but they are not consistent with the linear Langmuir adsorption model.
Thermodynamic parameters, namely, thermodynamics equilibrium constant at a particular temperature T ( K T 0 ) , Gibbs free energy at a particular temperature T ( Δ G T 0 ) , and change of enthalpy ( Δ H 0 ) and change of entropy at temperature T ( Δ S T 0 ) , were also determined by applying sorption value and concentrations of Cd in equilibrium solution within the temperature range.
The thermodynamic parameters revealed that Cd sorption increases as the values of K T 0 , Δ G T 0 , Δ H 0 , and Δ S T 0 were increased on reaction temperatures.
The spontaneous sorption reaction can be concluded due to high values of Δ G T 0 .
The positive values of Δ H 0 indicated that the Cd sorption is an endothermic one.
Under these present conditions, the soil and its components possibly supply a number of sites having different adsorption energies for cadmium sorption.
American Psychological Association (APA)
Karak, Tanmoy& Paul, Ranjit Kumar& Das, D. K.& Boruah, Romesh K.& Sonar, Indira. 2014. Thermodynamics of Cadmium Sorption on Different Soils of West Bengal, India. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1048781
Modern Language Association (MLA)
Karak, Tanmoy…[et al.]. Thermodynamics of Cadmium Sorption on Different Soils of West Bengal, India. The Scientific World Journal No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-1048781
American Medical Association (AMA)
Karak, Tanmoy& Paul, Ranjit Kumar& Das, D. K.& Boruah, Romesh K.& Sonar, Indira. Thermodynamics of Cadmium Sorption on Different Soils of West Bengal, India. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1048781
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048781