Cited by 109Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsPharmaceutical and Antibiotic Environmental Impacts

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Magnetic Fe2O3/biochar composite prepared in a molten salt medium for antibiotic removal in water

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Abstract

The large-scale use of antibiotics is causing serious water pollution problems, and it is of great significance to develop new technologies to remove antibiotics from water. As an environmentally friendly and economical adsorption material, carbon derived from biomass is a low-cost and feasible material for removing antibiotics in sewage, but the current removal efficiencies are not high enough for large-scale practical application. In this study, poplar wood chips are used as raw material, and a magnetic biochar is prepared by co-pyrolysis of poplar wood chips and FeCl 3/CaCl 2 mixed molten salt. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N 2-isothermal adsorption and desorption, X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM) techniques showed the successful synthesis of Fe 2 O 3/bioC composite. In-situ formed Fe 2 O 3 makes the biochar possess the characteristic of superparamagnetic, which is conducive to the recycling of biochar. Due to the etching effect of the molten salts, rough surface was formed on Fe 2 O 3/bioC, resulting in a maximum norfloxacin (NOR) adsorption ability up to 38.77 mg g−1 at pH 6.0. The NOR adsorption behavior on Fe 2 O 3/bioC followed the pseudo second order kinetic model and the equilibrium data was best fitted the Langmuir model. In addition, the adsorption process of NOR on Fe 2 O 3/bioC was thermodynamically spontaneous. The results show that this low-cost and reusable magnetic biochar has the potential for rapid and efficient removal of antibiotic from aqueous solution.

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  1. (II) by Chestnut Inner Shell, 2013 Third International Conference on Intelligent System Design and Engineering Applications (Isdea), 222-226.
  2. Leandro-Silva E, Pipi ARF, Magdalena AG, Piacenti-Silva M (2020) Application of Langmuir and Freundlich models in the study of banana peel as bioadsorbent of copper (II) in aqueous medium. Materia-Brazil 25:e12656
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  5. Tan Q, Han K, Zhao W, Li P, Liu Z, Li S, Qu X (2021) Synchronous nesting of hollow FeP nanospheres into three-dimensional porous carbon scaffold via salt-template method for performance-enhanced potassium-ion storage, sustainable. Energy Fuels 5:844–854
  6. Wang J, Zhang M, Zhou R, Li J, Zhao W, Zhou J (2020) Adsorption characteristics and mechanism of norfloxacin in water by γ-Fe2O3@BC. Water Sci Technol 82:242–254
  7. Wang X-X, Meng Z-F, Liu X, Wang T, Hu X-L, Sun X-X (2021b) Adsorption of BS-18 amphoterically modified bentonite to tetracycline and norfloxacin combined pollutants. Environ Sci 42:2334–2342

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Metadata

Authors
Liang, H., Zhu, C., Ji, S., Kannan, P., & Chen, F.
Affiliations
  • China University of Mining and Technology (CN)
  • Jiaxing University (CN)
Corresponding author
Ji, Shan
Venue
Biochar
Published
2022-01-20
Volume
4
Issue
1
ISSN
  • 2524-7867 (ISSN-L)
  • 2524-7972
OpenAlex
W4205718766
Cited by
108
References
58
Citations by year
2026: 19 · 2025: 33 · 2024: 24 · 2023: 24 · 2022: 8
FWCI
6.50
Type
journal article
Language
en
Open access
Locations
Biochar (publishedVersion, cc-by)
Funders
national natural science foundation of china (21908242)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
magnetic biochar, antibiotic removal, molten salt pyrolysis, poplar wood chips, superparamagnetism, adsorption kinetics, adsorption isotherms, adsorption thermodynamics, recyclable adsorbent, water pollution

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