Catalytic degradation of BPA by bamboo leaf-derived KOH-activated porous biocarbon loaded with CoFe2O4-activated peroxymonosulfate.

[Display omitted] • Use low-cost, readily available carbon sources. • The adsorption capacity of subjectively regulated biochar was 8.06 times higher than that of unactivated. • CoFe 2 O 4 @PBC 1.0 catalyst efficiently activated PMS, 20 mg/L of BPA was completely degraded in 30 min. • Suitable for a wide pH range (3-11) and degrades 100% of BPA in only 9 min at pH=11. • High concentration (200 mM) anionic environment hardly inhibits the degradation of BPA. • In liquid flow device, the degradation efficiency is still 80% at 40 h. Multiphase catalysts with wide pH, high environmental adaptability, and high activity are urgently needed for the water's contaminants to break down. In this study, the biomass waste bamboo leaves were used as the carbon source and activated by KOH to further increase the active sites (the adsorption capacity was 8.06 times that of the unactivated material) loaded with cobalt ferrite composite catalyst CoFe 2 O 4 @PBC X , which could effectively activate the PMS to realize the degradation of BPA. The CoFe 2 O 4 @PBC X + PMS system demonstrated remarkable BPA degradation across a broad starting pH range (3–11), and 100% BPA removal was achieved in 9 min at pH=11. CoFe 2 O 4 @PBC X achieved excellent BPA removal performance under high salinity conditions (200 mM). The toxicity of BPA and its oxidation intermediates was predicted by the ECOSAR model, which proved that BPA was eventually degraded into non-toxic products. In the bisphenol A degradation device, no catalyst deactivation was observed after 14 h, and 80% removal was maintained after 40 h. This study showed that the synthesized CoFe 2 O 4 @PBC X is a highly efficient PMS activation catalyst, which has the potential of low cost, high efficiency, and ecological friendliness in practical wastewater treatment. [ABSTRACT FROM AUTHOR]