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Paper Details

Kinetic Model for the Removal of Methyl Orange (Dye) From Aqueous Solution Using Avocado Pear (Persea Americana) Seed

A.K Asiagwu1, P.E Omuku2 & C.O Alisa3

Journal Title:Journal of Chemical, Biological and physical sciences
Abstract


The adsorptions kinetic removal of methyl orange (dye) from aqueous solution using avocado pear (Persea Americana) seeds as the biomass was studied. Under various experimental conditions, as time increased the amount of the dyes adsorbed increased and the equilibrium was reached within 15-20min. Modification of the adsorbent by Nitric acid (HNO3) and hydroxylamine hydrochioride (NH2OH.HCl) enhanced the adsorptive capacity of the adsorbent. Adsorption parameters were modeled by Freundlich and Langmuir Isotherm equation and the corresponding constant values were determined. The kinetics of sorption was well correlated using the Pseudo-first order and Pseudo-second order to analyse the experimental data: the very high values of correlation coefficients (R2) obtained showed that these models fit the experimental data perfectly. Therefore avocado pear seed was found to be a good adsorbent for adsorptive decolorization of methyl orange (dye) from waste water.

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