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Journal article
Tailoring ethylenediamine functionalization on magnetic Zr-based metal-organic frameworks towards enhanced phosphate and tetracycline adsorption by synergy of Fe3O4 and amino functional groups
Journal of environmental chemical engineering, Vol.12(5), 113703
2024
Abstract
The development of efficient adsorbent for removing excessive nutrients (e.g. phosphorous – P) and antibiotics (e.g. tetracycline hydrochloride – TC) from livestock wastewater is necessary but challenging in practical application. In this study, magnetic Zr-based metal-organic frameworks (Fe3O4/UiO-66) with interfacial Fe-O-Zr bonds were synthesized and then modified with ethylenediamine (EDA) functional groups. The resultant optimized composite, namely Fe3O4/UiO-66-N2, showed promising removal of P and TC from both single and binary solution systems. It exhibited the maximum P and TC adsorption capacities of 90.0 mg P/g and 72.3 mg/g in the single component solution, respectively. In the binary solution with an initial P concentration of 5 mg P/L, the coexistence of TC posed a slight inhibition effect on the P adsorption over Fe3O4/UiO-66-N2. However, the TC adsorption was increased by raising the initial P concentration in solution from 5 mg P/L to 20 mg P/L. The Fe3O4 nanoparticles and EDA functional groups were suggested jointly improving the adsorption capacities of P and TC, with the synergy factors of 1.1 and 1.8, respectively. The effects of reaction time, water medium, initial pH and coexisting ions on the adsorption were investigated in detail. The mechanisms governing the adsorption of phosphate included electrostatic attraction, hydrogen bonding, ligand exchange and complexation. Those contributing to the adsorption of TC included Lewis acid-base interaction and π-π electron-donor-acceptor interaction, in addition to electrostatic attraction, hydrogen bonding and complexation. This work designed novel functionalized magnetic MOF composite adsorbents targeting at efficient and simultaneous removal of P and TC from water, under the synergistic effect of the Fe3O4 nanoparticles and surface functional groups.
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•Fe3O4/UiO-66 were grafted with ethylenediamine (EDA) as efficient adsorbents.•The synergy of Fe3O4 and EDA enhanced the sorption capacity of P and TC.•The coexisting of P favored TC adsorption in binary solution.•The P sorption involve electrostatic attraction, H bonding, and ligand exchange.•π-π electron-donor-acceptor interaction contributes to the TC adsorption.
Details
- Title
- Tailoring ethylenediamine functionalization on magnetic Zr-based metal-organic frameworks towards enhanced phosphate and tetracycline adsorption by synergy of Fe3O4 and amino functional groups
- Authors/Creators
- Yu Gao - Jiangxi University of Science and TechnologyA.-Wen Jiang - Jiangxi University of Science and TechnologyShu-Hong Wang - Hangzhou Chuhuan Science and Technology Company, Hangzhou 310000, ChinaXiao-Mei Zhang - Jiangxi University of Science and TechnologyKang-Qiang Lu - Jiangxi University of Science and TechnologyKai Yang - Jiangxi University of Science and TechnologyWei-Ya Huang - Jiangxi University of Science and TechnologyDan Li - Murdoch University, Centre for Water, Energy and Waste
- Publication Details
- Journal of environmental chemical engineering, Vol.12(5), 113703
- Publisher
- Elsevier Ltd
- Identifiers
- 991005691069707891
- Copyright
- © 2024 The Authors.
- Murdoch Affiliation
- College of Science, Technology, Engineering and Mathematics
- Language
- English
- Resource Type
- Journal article
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