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Studies on the Removal of Acid Blue 25 from Wastewater Using Activated Carbon and Turmeric (Curcuma longa L.) as Adsorbent


Affiliations
1 Deptt. of Water Resources and Environmental Engineering, Karpagam University, Coimbatore-641 021, T. N., India
2 Department of Chemistry, C. I .T Sandwich Polytechnic College, Coimbatore-641 014, T. N., India
3 Anna University, Chennai-600 025, T. N., India
 

Activated carbon has been widely used as an adsorbent. Curcuma longa (Linn.) may be an alternative of activated carbon. In the present investigation the study on removal of dye Acid blue 25 using Curcuma longa waste activated carbon as an adsorbent following the down-flow column adsorption technique with a view to assess the stability of the chosen adsorbent for design purpose. Batch kinetic and isotherm studies were carried out at different conditions like contact time, Acid blue 25 concentration and bed height of the adsorbent. The Bohart-Adams and Thomas models were employed for the mathematical description of adsorption equilibrium, and finally it has been observed that the experimental data fitted more accurately to the Thomas model for both the cases.

Keywords

Acid Blue 25, Activated Carbon, Adsorption, Curcuma longa (Linn.).
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  • Studies on the Removal of Acid Blue 25 from Wastewater Using Activated Carbon and Turmeric (Curcuma longa L.) as Adsorbent

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Authors

P. Santhosh
Deptt. of Water Resources and Environmental Engineering, Karpagam University, Coimbatore-641 021, T. N., India
A. Sridevi
Department of Chemistry, C. I .T Sandwich Polytechnic College, Coimbatore-641 014, T. N., India
C. Dhandapani
Anna University, Chennai-600 025, T. N., India

Abstract


Activated carbon has been widely used as an adsorbent. Curcuma longa (Linn.) may be an alternative of activated carbon. In the present investigation the study on removal of dye Acid blue 25 using Curcuma longa waste activated carbon as an adsorbent following the down-flow column adsorption technique with a view to assess the stability of the chosen adsorbent for design purpose. Batch kinetic and isotherm studies were carried out at different conditions like contact time, Acid blue 25 concentration and bed height of the adsorbent. The Bohart-Adams and Thomas models were employed for the mathematical description of adsorption equilibrium, and finally it has been observed that the experimental data fitted more accurately to the Thomas model for both the cases.

Keywords


Acid Blue 25, Activated Carbon, Adsorption, Curcuma longa (Linn.).