Cobalt-Modified Biochar from Rape Straw as Persulfate Activator for Degradation of Antibiotic Metronidazole

Processes, Journal Year: 2024, Volume and Issue: 12(8), P. 1596 - 1596

Published: July 30, 2024

A cobalt-loaded magnetic biochar (Co-MBC) catalyst was synthesized to enhance the removal of metronidazole (MNZ). Study explored performance and mechanism MNZ degradation by Co-MBC activated permonosulfate (PMS). Results showed that cobalt oxides were effectively deposited onto surface, new oxygen functional groups added modified biochar, presence metallic element Co enhanced efficiency PMS activation in composite. More than 90% removed after 60 min with a dosage 0.2 g/L PS concentration 1 mM. After four reuses, still excellent catalytic degrade over 75% MNZ. The reaction system performed well even inorganic anions organic macromolecules. However, rate inhibited under alkaline conditions. quenching experiment indicated •SO4−, •OH, 1O2, •O2− synergistically degraded MNZ, that•SO4− played dominant role. LC-MS applied assess intermediate products, which CO2, H2O, NO3− final potential pathways suggested. In conclusion, an efficient stable material, its ability activate improved antibiotics, typical priority pollutant.

Language: Английский

Fabrication of ZnIn2S4/CeO2 S-scheme heterojuntion for the enhanced removal of tetracycline under visible light irradiation

Materials Today Communications, Journal Year: 2024, Volume and Issue: 41, P. 110280 - 110280

Published: Aug. 31, 2024

Language: Английский