NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.13 [2006] >
IJCT Vol.13(5) [September 2006] >

Title: Adsorption of fluoride onto magnesia-Equilibrium and thermodynamic study
Authors: Aravind, V
Elango, K P
Keywords: Defluoridation
Issue Date: Sep-2006
Publisher: CSIR
IPC CodeB01D15/00
Abstract: Batch sorption system using magnesium oxide as an adsorbent was investigated to remove fluoride ions from aqueous solutions. The system variables studied include initial concentration of the sorbate, agitation time, adsorbent dose, pH, co-ions and temperature. The experimental data fitted well to the Freundlich isotherm while, poorly to the Langmuir isotherm. Thermodynamic parameters such as Ho, So and Go were calculated indicating that the adsorption was a spontaneous, endothermic and a physical process. Kinetic studies reveal that the adsorption is first order. A mechanism involving three stages (external surface adsorption, intraparticle diffusion and final equilibrium) has been proposed for the adsorption of fluoride ions onto MgO. XRD patterns of the adsorbent were recorded to get a better in sight into the mechanism of the adsorption process.
Page(s): 476-483
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.13(5) [September 2006]

Files in This Item:

File Description SizeFormat
IJCT 13(5) 476-483.pdf205.47 kBAdobe PDFView/Open
 Current Page Visits: 765 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 170972 since 01-Sep-2015  Last updated on 30-Jun-2016Webmaster: