Bio-polymer adsorbent for the removal of malachite green from aqueous solution

  • Pradeep Sekhar C
  • Kalidhasan S
  • Rajesh V
 et al. 
  • 38


    Mendeley users who have this article in their library.
  • 66


    Citations of this article.


A simple, economical and green methodology has been developed for the adsorption of malachite green using cellulose powder as the adsorbent. Batch experimental procedures were conducted to investigate the adsorption ability of this bio-polymer to remove malachite green from aqueous medium. The adsorbed dye on cellulose was characterized by Fourier transform-infrared spectroscopy (FT-IR). The various analytical parameters such as the effect of contact time, pH, temperature, etc. were optimized. The adsorption was efficient at a neutral pH (7.2) and both Langmuir and Freundlich isotherm models showed good fit into the experimental data. The adsorption kinetics indicated that the adsorption proceeds according to pseudo-second-order model. The adsorption of malachite green was found to be exothermic and it was accompanied by decrease in the entropy. Column studies were performed and the regeneration of the adsorbent was done easily using environmentally benign polyethylene glycol-400. © 2009 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • Cellulose
  • Isotherm model
  • Malachite green
  • Polyethylene glycol
  • Reaction kinetics

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text


  • C. Pradeep Sekhar

  • S. Kalidhasan

  • Vidya Rajesh

  • N. Rajesh

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free