Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Hazard Mater. 2010 Sep 15;181(1-3):271-80. doi: 10.1016/j.jhazmat.2010.05.008. Epub 2010 May 7.

Adsorption of Malachite Green dye onto activated carbon derived from Borassus aethiopum flower biomass.

Author information

  • 1Chemical Engineering Area, Central Leather Research Institute (Council of Scientific & Industrial Research), Adyar, Chennai, India.

Abstract

In the present study, chemically prepared activated carbon derived from Borassus aethiopum flower was used as adsorbent. Batch adsorption studies were performed for the removal of Malachite Green (MG) from aqueous solutions by varying the parameters like initial solution pH, adsorbent dosage, initial MG concentration and temperature with three different particle sizes such as 100 microm, 600 microm and 1000 microm. The zero point charge was 2.5 and the maximum adsorption occurred at the pH range from 6.0 to 8.0. Experimental data were analyzed by model equations such as Langmuir, Freundlich and Temkin isotherms and it was found that the Langmuir isotherm model best fitted the adsorption data. Thermodynamic parameters such as DeltaG, DeltaH and DeltaS were also calculated for the adsorption processes. Adsorption rate constants were determined using pseudo first-order, pseudo second-order rate equations and also Elovich model and intraparticle diffusion models. The results clearly showed that the adsorption of MG onto PFAC followed pseudo second-order model and the adsorption was both by film diffusion and by intraparticle diffusion.

Copyright 2010 Elsevier B.V. All rights reserved.

PMID:
20537793
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk