Treatment of Diluted Solutions of Methylene Blue by Adsorption Coupled with Electrochemical Regeneration: A Comparative Study of Three Adsorbants

The electrochemical regeneration of methylene blue-saturated adsorbents has been assessed in this work. This study compares the performances of activated carbon, Nyex®1000 and sawdust. Isotherms of adsorption were investigated and the maximum adsorption capacity was compared. The maximum adsorption...

Full description

Saved in:
Bibliographic Details
Published in:ECS transactions 2014-08, Vol.59 (1), p.495-502
Main Authors: Bouaziz, Ines, Hamza, Morched, Abdelhedi, Ridha, Savall, André, Groenen Serrano, Karine
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The electrochemical regeneration of methylene blue-saturated adsorbents has been assessed in this work. This study compares the performances of activated carbon, Nyex®1000 and sawdust. Isotherms of adsorption were investigated and the maximum adsorption capacity was compared. The maximum adsorption capacity obtained for MB onto the virgin sawdust reached 25 mg/g which is 11.4 times lower than the one obtained onto activated carbon. The electrochemical regeneration efficiency, under the same experimental conditions, of the activated carbon and Nyex®1000 were significantly less than 100% while in the case of sawdust, this efficiency increased after each adsorption. This study confirmed that the coupling adsorption onto sawdust and electrochemical degradation is a potential technique for the efficient elimination of low concentration organic dyes from waste water.
ISSN:1938-5862
1938-6737
DOI:10.1149/05901.0495ecst