A novel magnetic biochar prepared by K2FeO4-promoted oxidative pyrolysis of pomelo peel for adsorption of hexavalent chromium

• Published in: Bioresource technology Vol. 300; p. 122680
• Main Authors: Yin, Zhibing, Xu, Shuang, Liu, Sen, Xu, Shuying, Li, Jihui, Zhang, Yucang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.03.2020
• Subjects: adsorption; aqueous solutions; biochar; chromium; citrus peels; electrostatic interactions; ferric compounds; Hexavalent chromium; High adsorption capability; Maghemite; Magnetic biochar; magnetic materials; magnetism; Potassium ferrate; pyrolysis; Hexavalent chromium; High adsorption capability; Potassium ferrate; Magnetic biochar; Maghemite

[Display omitted] •A highly adsorptive magnetic biochar was prepared using K2FeO4 in one-step.•Oxygen containing groups were simultaneously introduced with single phase ɤ-Fe2O3.•In situ generation of oxygen containing groups benefited to capturing ɤ-Fe2O3.•Both ɤ-Fe2O3 and biochar matrix contributed...