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Vol. 29 No. 3 (2017): Vol 29 Issue 3

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Dolichos lablab Peel Powder: A Novel and Economical Adsorbent for Removal of Aniline Blue from Aqueous Solution

https://doi.org/10.14233/ajchem.2017.20253
N. Pandiaraj
Post Graduate Studies & Research Department of Chemistry, Raja Doraisingam Government Arts College, Sivagangai-630 561, India
K. Ananthakumar
Department of Chemistry, Kamarajar Government Arts College, Surandai -627 859, India

Corresponding Author(s) : K. Ananthakumar

rakeshraahul@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 3 (2017): Vol 29 Issue 3

Abstract

The current study focused on the removal of aniline blue from aqueous solution using Dolichos lablab peel powder. The effect of initial concentration, contact time, dose of adsorbent, temperature and pH on the removal of aniline blue by adsorption on Dolichos lablab peel powder has been studied. The percentage removal of dye on adsorbent was found to be decrease with increase in initial concentration of dye. The percentage removal of dye increases with increase in contact time, while the exponentially increases with increase in dose of adsorbent. This was due to the availability of active sites. The percentage removal of dye increases with increase in temperature. By using this data the thermodynamic parameters such as DH°, DG° and DS° were calculated. The negative value of DG° shows the adsorption is favourable and spontaneous. The high positive values of DH° confirm the endothermic nature of adsorption process. Langmuir and Freundlich adsorption models were tested.

Keywords

Dolichos lablab peel powder Aniline blue Thermodynamic parameters Adsorption models
Pandiaraj, N., & Ananthakumar, K. (2016). Dolichos lablab Peel Powder: A Novel and Economical Adsorbent for Removal of Aniline Blue from Aqueous Solution. Asian Journal of Chemistry, 29(3), 563–567. https://doi.org/10.14233/ajchem.2017.20253
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