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Vol. 29 No. 12 (2017): Vol 29 Issue 12

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Isothermal Study on Removal of Methyl Red from Aqueous Solution Using Aloe vera Leaves Powder

https://doi.org/10.14233/ajchem.2017.20860
Renu Saxena
Department of Chemistry, School of Sciences, JECRC University, JECRC Foundation, Jaipur-303 905, India
Sapna Sharma
Department of Chemistry, School of Sciences, JECRC University, JECRC Foundation, Jaipur-303 905, India

Corresponding Author(s) : Sapna Sharma

drsharmasapna@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 12 (2017): Vol 29 Issue 12

Abstract

The potentiality of Aloe vera leaves powder (ALP) a low cost and eco-friendly adsorbent was characterized and investigated for the removal of methyl red dye from an aqueous solution using a green approach by the process of adsorption. The adsorption behaviour of the biosorbent was investigated by performing both kinetic and equilibrium isothermal studies in batch conditions at 34 ºC. Adsorption experiments were performed by changing different experimental parameters i.e., contact time, initial dye concentration, adsorbent dose, particle size and pH of the solution. The adsorption studies were best fitted with Langmuir isotherm and it gives monolayer adsorption capacity of 51.49 mg/g at pH 4.2 at 34 ºC. The correlation coefficient values indicate a moderate fit for monolayer Langmuir model (R2 = 0.99). The experimental and calculated values for amount of adsorbed dye per unit mass of sorbent (qe) for pseudo-second-order kinetic model were in good agreement as compared to that by pseudo first order kinetics. The structural characterization of Aloe vera leaves powder was performed by SEM, FTIR and by GC-MS.

Keywords

Aloe vera Methyl red dye Adsorption study Correlation coefficient Isotherm models Kinetics
Saxena, R., & Sharma, S. (2017). Isothermal Study on Removal of Methyl Red from Aqueous Solution Using Aloe vera Leaves Powder. Asian Journal of Chemistry, 29(12), 2743–2749. https://doi.org/10.14233/ajchem.2017.20860
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