Affordable Access

Publisher Website

Electrodialysis with bipolar membrane for regeneration of a spent activated carbon

Authors
Journal
Journal of Hazardous Materials
0304-3894
Publisher
Elsevier
Publication Date
Volume
170
Issue
1
Identifiers
DOI: 10.1016/j.jhazmat.2009.04.115
Keywords
  • Activated Carbon
  • Adsorption
  • Electrochemical Properties
  • Hydrogen Sulphide
  • Regeneration
Disciplines
  • Chemistry
  • Economics

Abstract

Abstract The main purpose of the present work was to develop a treatment method to regenerate granular adsorbent beds saturated with H 2S by utilizing three electrodialysis compartments equipped with a cation or an anion exchange membrane or a bipolar membrane. Three electrodialysis compartments were utilized under various experimental parameters to determine the optimum conditions for the recovery of column particles saturated by H 2S. The desulphurization operation is achieved with the extent of extraction close to 90% and an electric current density of about 30%. Use of the bipolar membrane makes it possible to regenerate the saturated adsorbent granules without adding chemical products. Since the only reagent was electricity, the projected economics are very attractive.

There are no comments yet on this publication. Be the first to share your thoughts.