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Sorption Study of Cd(II) from Aqueous Solution Using Activated Carbon Prepared from Vitellaria paradoxa Shell | OMICS International | Abstract
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Sorption Study of Cd(II) from Aqueous Solution Using Activated Carbon Prepared from Vitellaria paradoxa Shell

Jimoh AA1*, Adebayo GB2, Otun KO1, Ajiboye AT1, Bale AT1, Jamiu W2 and Alao FO2
1Department of Chemical, Geological and Physical Sciences, Kwara state University Malete, PMB 1530 Ilorin, Nigeria
2Department of Chemistry, Faculty of Science, University of Ilorin, PMB 1515, Ilorin, Nigeria
Corresponding Author : Jimoh AA
Department of Chemical
Geological and Physical Sciences
Kwara state University Malete
PMB 1530 Ilorin, Nigeria
Tel: +2348032422513
E-mail: aquochem@yahoo.com
Received January 20, 2015; Accepted March 24, 2015; Published March 27, 2015
Citation: Jimoh AA, Adebayo GB, Otun KO, Ajiboye AT, Bale AT, et al. (2015) Sorption Study of Cd(II) from Aqueous Solution Using Activated Carbon Prepared from Vitellaria paradoxa Shell. J Bioremed Biodeg 6:288. doi:10.4172/2155-6199.1000288
Copyright: © 2015 Jimoh AA, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Activated carbon prepared from vitellaria paradoxa (shea nut) shell using otho-phosphoric acid has been used for the removal of Cd(II) ion from aqueous solution. The adsorbent sample was characterized by some physicochemical and spectroscopic parameters such as pH, point of zero charge (PZC), moisture content, iodine number, loss on ignition, bulk density, XRF, SEM and TEM. The pH and the PZC of the sample were found to be 4.0 and 5.8 respectively. The adsorbent sample has moisture content of 5.22 ± 0.1%, iodine number of 456.50 ± 59%, loss on ignition 10.71 ± 0.18% bulk density of 0.84 ± 0.09%. The XRF analysis indicated that Ca, Si and Fe were major constituents in the adsorbent sample. The SEM and TEM analysis results indicated good adsorptive characteristics of the adsorbent. Result from the FTIR analysis indicate presence of some important components such as C=O, O-H, C-O N-H, and P-H which responsible for high adsorptive capacity of the adsorbent. The equilibrium adsorption of Cd(II) ion data was well fitted with Langmuir and Freundlich isotherms with correlation coefficient of 0.996 and 0.998 respectively. The kinetic study revealed that pseudo-second order kinetic was better fitted compared to pseudofirst- order kinetic. Thermodynamic experiment indicated that the adsorption process was exothermic with ΔH equals +27.84 KJ/mol and ΔS equals -0.993 KJ/molK.

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