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Sorption abilities of the sorbent material derived from Leaves and Barks of Lasoda (Cordia dichotoma) and Cassia Occidentalis were explored towards Methyl Red using synthetically prepared simulated wastewaters. Various factors such as initial dye concentration, contact time, adsorbent dosage, and the effect of temperature, which affects the adsorption, were evaluated. The equilibrium of adsorption was studied by Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich isotherms. To identify the kinetics of the adsorption process, pseudo-first-order, pseudo-second-order, Weber and Morris intraparticle diffusion, Bangham’s pore diffusion, and Elovich equations were applied. The interference of  fivefold excess of common anions and cations present in natural waters was studied. Cations like Ca2+, Mg2+, and Cu2+ have shown some interference but Fe2+ and Zn2+ have synergistically maintained the maximum extraction of the dye. The procedures developed have been successfully applied to some industrial effluent. The experimental data were suitable for the pseudo-First order kinetic model. The correlation coefficient (R2) and dimensionless separation factor (RL) values have confirmed that adsorption obeys Langmuir adsorption, indicating monolayer formation.


Adsorption isotherm Bio-adsorbent Equilibrium models Kinetics Methyl Red (MR) Pollution control

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Venkata Ramana K, Venkata Kishore C. H., Chandra Mohan K., Sailaja G., & Hari Babu B. (2021). Adsorption conceivable consequences of bio-sorbent got from cordia dichotoma (lasoda) and cassia occidentalis in the removal of methyl red dye. International Journal of Research in Pharmaceutical Sciences, 12(2), 1311-1321.