A magnetic macroporous α-Fe 2 O 3 /Mn 2 O 3 nanocomposite as an efficient adsorbent for simple and rapid removal of Pb(II) from wastewater and electronic waste leachate.

Autor: Hassan SSM; Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo, 11566, Egypt., El-Shalakany HH; Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo, 11566, Egypt., Fathy MA; Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo, 11566, Egypt. mahmoud.abdelwahab@sci.asu.edu.eg.; Department of Chemistry, College of Science and Engineering, University of Minnesota, Minneapolis, MN, 55455, USA. mahmoud.abdelwahab@sci.asu.edu.eg., Kamel AH; Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo, 11566, Egypt.; Department of Chemistry, College of Science, University of Bahrain, Sakhir, 32038, Bahrain.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Nov 26. Date of Electronic Publication: 2024 Nov 26.
DOI: 10.1007/s11356-024-35452-7
Abstrakt: A magnetic nanocomposite adsorbent, comprised of macroporous iron oxide/manganese oxide (α-Fe 2 O 3 /Mn 2 O 3 ), is prepared, characterized, and used for lead(II) removal from both industrial wastewater and leachate of electronic waste. The synergistic interaction between iron oxide and manganese oxide significantly enhances the adsorption performance. The surface characteristics and structural composition of the nanocomposite are examined using high-resolution transmission microscopy, X-ray spectroscopy, and Brunauer-Emmett-Teller methods. Under optimized conditions, the present method offers a significantly high adsorption capacity (377.5 ± 8.9 mg.g -1 ), short contact time (10 min), and an excellent removal efficiency (98.0 ± 0.9%) compared with most of the previously suggested methods. The adsorption kinetics of Pb(II) on the nanocomposite surface follows pseudo-second-order kinetics and exhibits a good fit with the Dubinin-Radushkevich (D-R) model. These findings highlight the applicability of the α-Fe 2 O 3 /Mn 2 O 3 magnetic nanocomposite as a promising efficient adsorbent for the rapid removal of lead(II) from hazardous wastewater. Moreover, the proposed nanocomposite adsorbent exhibits remarkable stability and can be easily isolated from the test sample solution for subsequent reuse. The efficacy of the developed adsorptive removal procedure is confirmed by achieving a complete lead(II) ion removal from some industrial wastewater discharged from lead battery factories and from the leachate of electronic waste.
Competing Interests: Declarations. Ethical approval: All experiments adhered to the guidelines set forth in the Declaration of Helsinki (1964) and the Clinical Medical Research Regulation Act of 2020. Approval was granted by the Ethical Committee (EC) of the Faculty of Science, Ain Shams University, Cairo, Egypt. Consent to Participate: Not applicable. Consent for Publication: Not applicable. Competing of Interests: The authors declare no competing interests.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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