Improving biochar properties through liquid-phase exfoliation of onion peel biochar doped with chicken feathers

•Onion peel was doped into chicken feathers for hybrid biochar production.•Two exfoliation routes was engaged to enhance the hybrid biochar properties.•It was observed that the exfoliation routes improved the surface area of the biochar.•Acetone exfoliation route improved the carbon content of the h...

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Bibliographic Details
Published in:Surfaces and interfaces 2024-09, Vol.52, p.104841, Article 104841
Main Authors: Adeniyi, Adewale George, Emmanuel, Stephen Sunday, Alharthi, Maymounah N., Iwuozor, Kingsley O., Emenike, Ebuka Chizitere, Oyekunle, Ifeoluwa Peter, Micheal, Taiwo Temitayo, Omuku, Patrick E., Micheal, Kehinde Temitope, Ojo, Happiness T., Amoloye, Mubarak A.
Format: Article
Language:English
Subjects:
Doping strategy
Environmental consciousness
Hybrid biochar
Material characterization
Waste management
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Summary:•Onion peel was doped into chicken feathers for hybrid biochar production.•Two exfoliation routes was engaged to enhance the hybrid biochar properties.•It was observed that the exfoliation routes improved the surface area of the biochar.•Acetone exfoliation route improved the carbon content of the hybrid biochar. In recent decades, heightened environmental awareness has spurred a global push for innovative waste-to-wealth solutions. This study explores liquid-phase exfoliation as a strategy to enhance biochar properties. By doping onion peels and chicken feathers, hybrid biochar (HBC) was produced using a low-temperature co-carbonization system. Two exfoliation routes, the nitric acid and acetone routes, were compared with the un-exfoliated HBC through material characterization. Material characterization revealed distinct morphological features and a range of functional groups being introduced by exfoliation. It was also observed through the BET analysis that the HBC samples are mesoporous, with the exfoliated HBCs having an enhanced surface area and pore volume. Elemental analysis showcased HBC's fortification, highlighting potential applications such as adsorbents and soil amendments. This investigation shows the efficacy of liquid-phase exfoliation in enhancing biochar surface characteristics, opening avenues for diverse applications. [Display omitted]
ISSN:2468-0230
DOI:10.1016/j.surfin.2024.104841