Enhancement of adsorption and regeneration ability for biochar aerogel over in situ supported FeOOH/Cu2O particles

• Published in: Biomass conversion and biorefinery Vol. 14; no. 13; pp. 14053 - 14063
• Main Authors: Zhai, Shimin, Jin, Rushi, Zhang, Yan, Liu, Guojin, Qi, Dongming
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2024; Springer Nature B.V
• Subjects: Adsorption; Aerogels; Bamboo; Biotechnology; Copper oxides; Energy; Hydrogen peroxide; Original Article; Regeneration; Renewable and Green Energy; Solar radiation; Solid wastes; Wastewater treatment; Regeneration; Reusability; Adsorption; Biochar; Wastewater treatment
• ISSN: 2190-6815; 2190-6823
• DOI: 10.1007/s13399-022-03504-y

Biochars prepared from waste biomass have drawn great attentions in wastewater treatment. How to regenerate the used biochar after adsorption to avoid solid waste pollution is a key problem. Herein, a biochar aerogel (BC@FeOOH/Cu 2 O) deriving from waste bamboo was prepared, and the FeOOH/Cu 2 O particles were in situ loaded onto biochar to enhance its adsorption and regeneration ability. The adsorption and regeneration ability of BC@FeOOH/Cu 2 O were explored, and the colority and chemical demand oxygen (COD) removal rate of BC@FeOOH/Cu 2 O (2 g/L) for reactive red X-3B (250 mg/L) reached 100% with the adsorption quantity of 125 mg/g. Moreover, the BC@FeOOH/Cu 2 O after adsorption can be regenerated with H 2 O 2 (0.1%) under solar irradiation (1.0 sun), and the removal capacity of BC@FeOOH/Cu 2 O for reactive red X-3B still reached 115.5 mg/g after 10 cycles. The excellent reusability of BC@FeOOH/Cu 2 O may reduce solid waste pollution and benefit the large-scale application of biochars in dye wastewater treatment. Graphical Abstract