Insight into microwave-assisted synthesis of the chitosan-MOF composite: Pb(II) adsorption

Gul Zaman, H. and Baloo, L. and Kutty, S.R. and Aziz, K. and Altaf, M. and Ashraf, A. and Aziz, F. (2023) Insight into microwave-assisted synthesis of the chitosan-MOF composite: Pb(II) adsorption. Environmental Science and Pollution Research, 30 (3). pp. 6216-6233.

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Abstract

Abstract: Heavy metal contamination has increased over the globe, causing significant environmental issues owing to direct and indirect releases into water bodies. As a result, metal removal from water entities must be addressed soon. Various adsorbents such as MOFs and chitosan have demonstrated promising results in water treatment. The present study prepared a composite material (chitosan-UiO-66-glycidyl methacrylate MOF) by a microwave-assisted method. The structure and morphology of the chitosan-MOF composite were studied using FE-SEM, EDX, XRD, BET, FT-IR, and TGA techniques. In addition, the adsorption of Pb(II) from aqueous solution onto the chitosan-MOF composite was analyzed in a batch study concerning pH, contact time, initial metal ion concentration, and adsorbent dosage. The composite has a large surface area of 867 m2/g with a total pore volume of 0.51 cm3/g and thermal stability of up to 400 �C. Following an analysis of the adsorption isotherms, kinetics, and thermodynamics, the Langmuir model showed an excellent fit with the adsorption data (R2 = 0.99) and chi-squared (X2 = 3.609). The adsorption process was a spontaneous exothermic reaction and the pseudo-second-order rate equation fitted the kinetic profile well. Moreover, the composite is recyclable, retaining 83.45 of its removal effectiveness after 5 consecutive cycles, demonstrating it as a sustainable adsorbent for metal recovery. This study introduces a novel synthesized composite with enhanced recyclability and a higher potential for eliminating pollutants from industrial wastewater. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type: Article
Additional Information: cited By 16
Uncontrolled Keywords: adsorption; composite; lead; nanocomposite; organometallic compound; pollutant removal; polymer, chitosan; lead, adsorption; chemistry; infrared spectroscopy; kinetics; microwave radiation; pH; procedures; water management; water pollutant, Adsorption; Chitosan; Hydrogen-Ion Concentration; Kinetics; Lead; Microwaves; Spectroscopy, Fourier Transform Infrared; Water Pollutants, Chemical; Water Purification
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 04 Jun 2024 14:12
Last Modified: 04 Jun 2024 14:12
URI: https://khub.utp.edu.my/scholars/id/eprint/19530

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