Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Synthesis and Characterization of Metal Oxide Nanoparticles Anchored Carbon as Hybrid Adsorbents for Effective Heavy Metals-Uptake from Wastewater

Version 1 : Received: 30 November 2023 / Approved: 1 December 2023 / Online: 1 December 2023 (13:35:24 CET)

How to cite: ALanazi, A.G.; Habila, M.A.; ALOthman, Z.A.; Badjah-Hadj-Ahmed, A.Y. Synthesis and Characterization of Metal Oxide Nanoparticles Anchored Carbon as Hybrid Adsorbents for Effective Heavy Metals-Uptake from Wastewater. Preprints 2023, 2023120084. https://doi.org/10.20944/preprints202312.0084.v1 ALanazi, A.G.; Habila, M.A.; ALOthman, Z.A.; Badjah-Hadj-Ahmed, A.Y. Synthesis and Characterization of Metal Oxide Nanoparticles Anchored Carbon as Hybrid Adsorbents for Effective Heavy Metals-Uptake from Wastewater. Preprints 2023, 2023120084. https://doi.org/10.20944/preprints202312.0084.v1

Abstract

Hybrid materials derived adsorbents have showed a great applicable efficiency in various fields including industrial uses and environmental remediation. Herein, the zinc oxide nanoparticles anchored carbon (ZnO-C) is fabricated and utilized for wastewater treatment by adsorption of Zn(II), Cd(II), Co(II) and Mn(II). The surface and structural characteristics are examined by TEM, SEM, XRD, FTIR, EDS and BET surface area. The Kinetics and equilibrium investigations are applied to optimize the adsorptive removal of Zn(II), Cd(II), Co(II) and Mn(II) onto ZnO-C. Results indicated formation of ZnO-C in crystalline spherical granules with nano-size between 29.3 and 48.8 nm. In addition, the spherical granules are gathered to form clusters. The FTIR indicated that the ZnO-C surface is rich with OH groups and ZnO. The adsorption capacity is reported as 212, 209, 200 and 230 mg/L for Zn(II), Cd(II), Co(II) and Mn(II) respectively. The optimum condition for maximum adsorption were pH between 5 and 6, contact time of 180 min and adsorbent dose of 0.1 g/L. The adsorptive removal data modeling for uptake of Zn(II), Cd(II), Co(II) and Mn(II) onto ZnO-C showed agreement with the assumption of pseudo 2nd order kinetic model and Freundlich isotherm suggesting fast adsorption rate and multilayer mechanism. The achieved adsorption capacity using the prepared ZnO-C is more effective compared to ZnO, carbon, Fe3O4 and Fe3O4-C. Real wastewater samples are applied including valley water, industrial wastewater and rain wastewater and evaluated for applicable uptake of Zn(II), Cd(II), Co(II) and Mn(II) using ZnO-C and Fe3O4-C with high efficiency.

Keywords

hybrid materials; zinc oxide nanoparticles; carbon; iron (III) oxide nanoparticle; adsorption; ki-netic and equilibrium studies

Subject

Chemistry and Materials Science, Applied Chemistry

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