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E-Journal of Chemistry
Volume 8 (2011), S1, Pages S61-S66

Biosorption Studies for the Removal of Malachite Green from its Aqueous Solution by Activated Carbon Prepared from Cassava Peel

C. Parvathi,1 T. Maruthavanan,2 S. Sivamani,3 and C. Prakash4

1Department of Chemistry, Maha College of Engineering, Minnampalli, Salem-636 106, Tamilnadu, India
2Department of Chemistry, SONASTARCH, Sona College of Technology, Salem-636 005, Tamilnadu, India
3Department of Biotechnology, Vinayaka Mission’s Kirupananda Variyar Engineering College, Vinayaka Missions University, Salem – 636 308, Tamilnadu, India
4Department of Fashion Technology, Sona College of Technology, Salem-636 005, Tamilnadu, India

Received 10 February 2011; Revised 16 April 2011; Accepted 28 April 2011

Copyright © 2011 Hindawi Publishing Corporation. 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.


The association of dyes with health related problems is not a new phenomenon. The effectiveness of carbon adsorption for dye removal from textile effluent has made it an ideal alternative to other expensive treatment methods. The preparation of activated carbon from agricultural waste could increase economic return and reduce pollution. Cassava peel has been used as a raw material to produce activated carbon. The study investigates the removal of malachite green dye from its aqueous solution. The effects of condition such as adsorbent dosage, initial dye concentration, pH and contact time were studied. The adsorption capacity was demonstrated as a function of time for malachite green from aqueous solution by the prepared activated carbon. The results showed that as the amount of the adsorbent was increased, the percentage of dye removal increased accordingly. Higher adsorption percentages were observed at lower concentrations of malachite green dye. Silver nitrate treated cassava peel showed a better performance compared to Sulphuric acid treated and raw carbons, thus making it an interesting option for dye removal textile effluent.