Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 211: Issue 2

Kinetics and thermodynamic aspect of the adsorption of Fe(III) on HTTA-imbedded polyurethane foam

Authors:
,
M. Saeed Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P.O. Nilore, Islamabad Pakistan

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A. Rusheed Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P.O. Nilore, Islamabad Pakistan

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N. Ahmed Quaid-i-Azam University Department of Chemistry Islamabad Pakistan

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Pages:
293–303
Online Publication Date:
13 Aug 2005
Publication Date:
17 Dec 1996
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02039699
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Abstract  

The batch kinetics of Fe(III) adsorption on HTTA-loaded polyurethane (PU) foam have been investigated. The rate of controlling the adsorption is found to be intraparticle diffusion. The reaction rate of adsorption and desorption was also evaluated and found to increase and decrease with temperature, respectively. This indicates an endothermic adsorption behavior of Fe(III) on HTTA loaded PU foam. The activation energy of adsorption (80±10 kJ·mol–1) and of desorption (–45±±2 kJ· mol–1) indicates the chemical adsorption rather than physical adsorption. The isosteric heat of adsorption (Hads) was found to be –82.7±5.05 kJ·mol–1. This shows the formation of new chemical bonds among Fe(III)-HTTA-PU foam. The thermodynamic parameters of G, H and S, and equilibrium constantKc have been calculated. These functions further support that the process of adsorption of Fe(III) on HTTA-loaded PU foam is endothermic and chemisorption, stabilized through thermodynamic functions.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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