Potential of Polyalthia longifolia Branches as a Biosorbent to Remove Textile Brilliant Yellow Dye from Aqueous Media

Author:

Sitara Anjum Sitara Anjum,Sana Ashraf Sana Ashraf,Sajid Rashid Ahmad Sajid Rashid Ahmad,Muhammad Salman and Zahra Majid Muhammad Salman and Zahra Majid

Abstract

This study was conducted to analyze the efficacy of Polyalthia longifolia branches as an effective biosorbent for elimination of textile dye stuff brilliant yellow. Different operating conditions were tested (adsorbent dose, dye concentration, contact time, pH and temperature) to investigate their relationship with adsorption strength of Polyalthia longifolia and subsequently to eliminate toxic color. The absorbent was also characterized by Fourier Transform Infrared (FTIR). Optimum adsorption was observed at pH 6. Model of kinetic explored the adsorption data showing pseudo 2nd order with high correlation coefficient R2 of 0.996. Langmuir model followed well to equilibrium data relative to Freundlich and Temkin models. Thermodynamic property was also observed, where Gibbs free energy, entropy and enthalpy were analyzed. Through Gibbs free energy it was found that absorbent has endothermic nature. Thermodynamic properties have depicted that adsorption process was natural, endothermic and suitable for treatment of toxic dye.

Publisher

Chemical Society of Pakistan

Subject

General Chemistry

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