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Mechanism of biochar composite (BN3Z0.5BC) activated peracetic acid for efficient antibiotic degradation: Synergistic effect between free radicals and non-free radicals

Li, Shuo ; Liu, Yingnan ; Zheng, Heshan ; Niu, Junfeng ; Kit Leong, Yoong ; Dong, Xu ; Chang, Jo-Shu

Bioresource technology, 2024-04, Vol.397, p.130452-130452, Article 130452 [Periódico revisado por pares]

England: Elsevier Ltd

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  • Título:
    Mechanism of biochar composite (BN3Z0.5BC) activated peracetic acid for efficient antibiotic degradation: Synergistic effect between free radicals and non-free radicals
  • Autor: Li, Shuo ; Liu, Yingnan ; Zheng, Heshan ; Niu, Junfeng ; Kit Leong, Yoong ; Dong, Xu ; Chang, Jo-Shu
  • Assuntos: Anti-Bacterial Agents ; Charcoal ; Defect structure ; Free Radicals ; Oxidation-Reduction ; Peracetic Acid ; Singlet oxygen ; Sulfadiazine ; Superoxide radical ; Water Pollutants, Chemical - chemistry ; Water treatment
  • É parte de: Bioresource technology, 2024-04, Vol.397, p.130452-130452, Article 130452
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: [Display omitted] •SDZ was degraded in 5 min with the removal rate remaining at 78.2 % after 4 cycles.•Defect structures of the catalyst act as the active site to promote ROS production.•SDZ degradation involves synergistic effects of free radicals and non-free radicals.•Nitrogen-oxygen vacancies provide abundant local electrons for DO to form •O2−. This study utilized corn straw as the feedstock to synthesize biochar (BC) loaded with cobalt-zeolitic imidazolate framework nanoparticles and boron nitride quantum dots. The prepared BC composite, named BN3Z0.5BC, efficiently activated peracetic acid (PAA), resulting in the degradation of 94.8% of sulfadiazine (SDZ) in five minutes. Compared to pure BC, the SDZ removal rate increased nearly 5-fold. Mechanism analysis revealed that the main degradation pathway involves synergism between free and non-free radicals. The defect structure on the BC surface possesses a high charge density, stimulating PAA to produce more active species, while nitrogen–oxygen vacancy formation significantly promotes charge transfer. Besides, the unique structure of BC ensures good stability and recyclability, effectively controlling metal leaching. The BN3Z0.5BC/PAA system shows promising applicability across various water matrices, indicating a favorable application outlook.
  • Editor: England: Elsevier Ltd
  • Idioma: Inglês
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