Adsorption of Methyl Orange on Syzygium cumini Seed Powder: Kinetics, Isotherms, and Thermodynamic Studies
Karuna Devi Rachapudi, Jaya Malathi Jagadeeson, Raja Kumar Challagundla, Sreeramulu Dasari, Vijaya Yarramuthi*
DOI: 10.22607/IJACS.2018.603008
Volume 6, Issue 3 | Pages: 149-155
Abstract
Present research discussed the utilization of Syzygium cumini seed powder (SCSP) as an adsorbent for methyl orange (MO)
removal from aqueous solution. Batch adsorption experiments were carried out to evaluate the influence of pH, adsorbent
dosage, contact time, initial dye concentration, and temperature. Langmuir and Freundlich isotherm models were employed
to describe the adsorption of the MO by SCSP. The equilibrium data was better fitted by Langmuir isotherm model than the
Freundlich model. The maximum monolayer adsorption capacity of MO onto SCSP was found to be 63.3 mg/g. The pseudo
first-order and pseudo second-order model equations were used to analyze the kinetic data of the adsorption process, and the data
were fitted well with the pseudo second-order kinetic model. The thermodynamic parameters (ΔGo, ΔHo, and ΔSo) showed that
the adsorption of MO onto SCSP was endothermic and spontaneous. Results in this study suggested that SCSP was a suitable
material for the removal of MO from aqueous solution.
Keywords
Adsorption Methyl orange Kinetics Isotherms Thermodynamics.References
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Citation
Karuna Devi Rachapudi, Jaya Malathi Jagadeeson, Raja Kumar Challagundla, Sreeramulu Dasari, Vijaya Yarramuthi* . Adsorption of Methyl Orange on Syzygium cumini Seed Powder: Kinetics, Isotherms, and Thermodynamic Studies . J Appl Pharm Sci. 2018; 6(3):149-155.