Next Article in Journal
Correlation between Mechanical Properties with Specific Wear Rate and the Coefficient of Friction of Graphite/Epoxy Composites
Previous Article in Journal
The Tension-Stiffening Contribution of NSM CFRP to the Behavior of Strengthened RC Beams
Article Menu

Export Article

Open AccessArticle
Materials 2015, 8(7), 4147-4161; doi:10.3390/ma8074147

Removal of Congo Red from Aqueous Solution by Anion Exchange Membrane (EBTAC): Adsorption Kinetics and Themodynamics

1
Department of Chemistry, the Islamia University of Bahawalpur, Bahawalpur 63000, Pakistan
2
Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
3
Departamento de Universidad de Córdoba, Edificio Marie Curie, Ctra Nnal IV-A, Km396, Córdoba E14014, Spain
4
School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, Anhui, China
*
Author to whom correspondence should be addressed.
Academic Editor: Gerald Murphy
Received: 12 May 2015 / Revised: 24 June 2015 / Accepted: 29 June 2015 / Published: 8 July 2015
(This article belongs to the Section Porous Materials)
View Full-Text   |   Download PDF [2082 KB, uploaded 8 July 2015]   |  

Abstract

The adsorption behavior of anionic dye congo red (CR) from aqueous solutions using an anion exchange membrane (EBTAC) has been investigated at room temperature. The effect of several factors including contact time, membrane dosage, ionic strength and temperature were studied. Kinetic models, namely pseudo-first-order and pseudo-second-order, liquid film diffusion and Elovich models as well as Bangham and modified freundlich Equations, were employed to evaluate the experimental results. Parameters such as adsorption capacities, rate constant and related correlation coefficients for every model were calculated and discussed. The adsorption of CR on anion exchange membranes followed pseudo-second-order Kinetics. Thermodynamic parameters, namely changes in Gibbs free energy (∆G°), enthalpy (∆H°) and entropy (∆S°) were calculated for the adsorption of congo red, indicating an exothermic process. View Full-Text
Keywords: adsorption; congo red; anion exchange membrane; Kinetics; thermodynamics adsorption; congo red; anion exchange membrane; Kinetics; thermodynamics
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Khan, M.I.; Akhtar, S.; Zafar, S.; Shaheen, A.; Khan, M.A.; Luque, R.; Rehman, A.U. Removal of Congo Red from Aqueous Solution by Anion Exchange Membrane (EBTAC): Adsorption Kinetics and Themodynamics. Materials 2015, 8, 4147-4161.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top