Iron and nitrogen co-doping biochar for simultaneous and efficient adsorption of oxytetracycline and norfloxacin from wastewater

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dc.contributor.authorCheng, Xiaoxue
dc.contributor.authorJiang, Ding
dc.contributor.authorZhu, Weiyi
dc.contributor.authorXu, Huan
dc.contributor.authorLing, Qifan
dc.contributor.authorYang, Jingwen
dc.contributor.authorWang, Xinyu
dc.contributor.authorZhang, Kexin
dc.contributor.authorZheng, Xiaolong
dc.contributor.authorHe, Sirong
dc.contributor.authorCao, Bin
dc.contributor.authorWagland, Stuart
dc.contributor.authorWang, Shuang
dc.date.accessioned2025-03-25T11:33:23Z
dc.date.available2025-03-25T11:33:23Z
dc.date.freetoread2025-03-25
dc.date.issued2025-04-01
dc.date.pubOnline2025-02-11
dc.description.abstractThe global proliferation of antimicrobial resistance (AMR) poses a critical challenge to environmental and public health, driven by excessive antibiotic release from medical, agricultural, and aquaculture activities. This study investigates the synthesis and application of Fe/N-doped biochar derived from Enteromorpha clathrata (EC) for the removal of oxytetracycline (OTC) and norfloxacin (NOR) from water. The biochar, synthesized via pyrolysis and NaOH activation, was characterized by BET, SEM, and XPS analyses, revealing a porous structure with enriched functional groups. The EC-derived biochar demonstrated high adsorption capacities for OTC (625.325 mg·g⁻1) and NOR (487.379 mg·g⁻1) under neutral pH conditions, with adsorption following Langmuir and pseudo-second-order models, indicative of monolayer chemisorption. The biochar also exhibited excellent reusability, supporting practical applications. The strong interactions between the FeN4 active sites and the antibiotics were quantified through DFT calculations, showing binding energies of −394.91 kcal/mol for NOR and −398.10 kcal/mol for OTC, highlighting the important role of FeN4 in facilitating efficient adsorption. Additionally, density of states (DOS) analysis revealed that formation of Fe-N/O chemical bonds was confirmed through the hybridization of Fe 3d orbitals with N/O 2p orbitals. Overall, Fe/N-rich biochar contributes to its potential for practical applications in antibiotic removal from aqueous systems.
dc.description.journalNameIndustrial Crops and Products
dc.description.sponsorshipJiangsu Province Science and Technology Department, Jiangsu Provincial Department of Education, National Natural Science Foundation of China
dc.description.sponsorshipThis work was supported by the Jiangsu Province Outstanding Youth Fund (BK20230012) and the High-performance Computing Platform of Jiangsu University.
dc.identifier.citationCheng X, Jiang D, Zhu W, et al., (2025) Iron and nitrogen co-doping biochar for simultaneous and efficient adsorption of oxytetracycline and norfloxacin from wastewater. Industrial Crops and Products, Volume 226, April 2025, Article number 120646
dc.identifier.eissn1872-633X
dc.identifier.elementsID564686
dc.identifier.issn0926-6690
dc.identifier.paperNo120646
dc.identifier.urihttps://doi.org/10.1016/j.indcrop.2025.120646
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23639
dc.identifier.volumeNo226
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S092666902500192X?via%3Dihub
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBiochar
dc.subjectAntibiotic removal
dc.subjectLangmuir isotherm
dc.subjectCooperative Chemisorption
dc.subjectpi-pi interactions
dc.subjectOrbital hybridization
dc.subject30 Agricultural, Veterinary and Food Sciences
dc.subject40 Engineering
dc.subject4004 Chemical Engineering
dc.subject3004 Crop and Pasture Production
dc.subject3006 Food Sciences
dc.subjectBiotechnology
dc.subject3004 Crop and pasture production
dc.subject3006 Food sciences
dc.subject4004 Chemical engineering
dc.titleIron and nitrogen co-doping biochar for simultaneous and efficient adsorption of oxytetracycline and norfloxacin from wastewater
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-02-11

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