Removal of Methyl orange (MO) from aqueous solution by bimetal-organic frameworks (Cux-Cr100-x–MOF): Kinetics and isotherms studies

Salama, Reda S.; A. El-Hakam, Sohier.; Samra, Salem. E.; El-Dafrawy, Shady. M.; Ibrahim, Amr Awad; Ahmed, Awad I.

doi:10.21608/dusj.2023.291063

	Removal of Methyl orange (MO) from aqueous solution by bimetal-organic frameworks (Cux-Cr100-x–MOF): Kinetics and isotherms studies
Delta University Scientific Journal
Volume 6, Issue 1, April 2023, Page 266-277 PDF (538.54 K)
Document Type: Original research papers
DOI: 10.21608/dusj.2023.291063
View on SCiNiTO
Authors
Reda S. Salama¹; Sohier. A. El-Hakam^* ²; Salem. E. Samra^* ²; Shady. M. El-Dafrawy^* ²; Amr Awad Ibrahim^* ²; Awad I. Ahmed ²
¹Basic Science Department, Faculty of Engineering, Delta University for Science and Technology, Gamasa, Egypt
²Chemistry Department, Faculty of science, Mansoura University, Mansoura, Egypt
Abstract
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.
Keywords
Mixed MOFs; Cu-BDC; Cr-MIL-101; methyl orange; adsorption; water treatment


Statistics Article View: 234 PDF Download: 127