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Chemical and Biochemical Engineering Quarterly, Vol. 36 No. 1, 2022.

Original scientific paper

https://doi.org/10.15255/CABEQ.2021.1960

Synthesis and Application of Cobalt-based Metal-organic Framework for Adsorption of Humic Acid from Water

S. Naseem orcid id orcid.org/0000-0003-0940-9825 ; Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan
Z. Aslam orcid id orcid.org/0000-0002-6628-3627 ; Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan
A. Abbas ; Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan
S. Sumbal ; Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan
R. Ali orcid id orcid.org/0000-0002-9960-6429 ; a) Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan; b)Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
M. Usman ; Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia

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Abstract

In this study, the adsorption of humic acid on cobalt based metal-organic framework (Co-MOF) was investigated. Co-MOF was synthesized via solvothermal technique and further characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The characterization results of material confirm the formation of MOF structure. The adsorption kinetics, isotherms, thermodynamics, as well as isosteric heat of adsorption were also investigated by obtaining experimental adsorption data through batch experimentation. Optimum adsorption uptake of ~91 mg g–1 was attained at pH 6 and 305 K. Regression analysis of experimental results revealed that adsorption kinetics follows a pseudo-second-order kinetic model, and adsorption can reach equilibrium at ~20 min. Adsorption isotherm data can be well fitted with Koble Corrigan isotherm. Thermodynamic parameters demonstrated that the adsorption of humic acid is a spontaneous, endothermic, and physical process, while isosteric heat evaluations revealed the heterogeneous nature of the adsorbent. Overall, the Co-MOF was a promising choice to adsorb humic acid from water.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

metal organic framework; humic acid; water pollution; adsorption

Hrčak ID:

275197

URI

https://hrcak.srce.hr/275197

Publication date:

12.4.2022.

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