NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.15 [2008] >
IJCT Vol.15(2) [March 2008] >

Title: Removal of basic and acidic dyes from aqueous solution by adsorption on a low cost activated carbon: Kinetic and thermodynamic study
Authors: Arivoli, S
Sundaravadivelu, M
Elango, K P
Keywords: Adsorption
Activated carbon
Issue Date: Mar-2008
Publisher: CSIR
Abstract: Batch experiments were carried out for the sorption of Congo red (CR), Malachite green (MG), Rhodamine B (RDB) and Rose Bengal (RB) dyes onto acid activated carbon prepared from a plant material, Aloe barbadensis Mill. The operating variables studied were initial dye concentration, pH, temperature and contact time. Equilibrium data were fitted to the Langmuir and Freundlich isotherm equations. From this, adsorption efficiency, adsorption energy, adsorption capacity, intensity of adsorption and dimensionless separation factor were calculated. The amounts of CR, MG, RDB and RB removed from a 60 mg L⁻¹ of the dye solution at 30ºC are 21.17, 26.19, 8.50 and 3.62 mg g⁻¹, respectively. The results of these studies indicate that the adsorption is favourable. From the kinetic studies, the rate constant values for the adsorption process were calculated. The thermodynamic parameters like ∆G°, ∆H°, and ∆S° indicate that the adsorption process is endothermic and spontaneous in nature. The mechanism of the adsorption of dyes onto the adsorbent has been investigated by using the experimental results and confirmed by FT IR, XRD and SEM images.
Page(s): 130-139
ISSN: 0971–457X
Source:IJCT Vol.15(2) [March 2008]

Files in This Item:

File Description SizeFormat
IJCT 15(2) (2008) 130-139.pdf563.93 kBAdobe PDFView/Open
 Current Page Visits: 1088 
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: 162792 since 01-Sep-2015  Last updated on 21-Jun-2016Webmaster: