article · Delta University Scientific Journal
The kinetics studies methyl orange adsorption from aqueous solution, by using by bimetal-organic frameworks (Cux-Cr100-x–MOF), were investigated spectrophotometrically using the batch technique. Batch experiments were conducted to study the effects of pH and initial concentration of adsorbate dye adsorption. The kinetic data obtained from different batch experiments were analyzed using both pseudo first-order and pseudo second-order equations. The equilibrium adsorption data were analyzed by using the Freundlich and Langmuir models. The best results were achieved with the pseudo second-order kinetic model and with the Langmuir isotherm equilibrium model. The equilibrium adsorption capacity (qe) increases with increasing the initial concentration of dye and with decreasing pH.
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DOI: 10.21608/dusj.2023.291063
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