Catalytic performance and periodate activation mechanism of anaerobic sewage sludge-derived biochar

Removal of Phenols by Highly Active Periodate on Carbon Nanotubes: A Mechanistic Investigation

“…Li et al found that iodine-doped granular activated carbon could activate PI to produce IO 3 • for the degradation of Acid Orange 7 . Besides, in the PI activation systems using carbon materials, due to insufficient quenching of free-radical scavengers and undetectable electron spin resonance (ESR) characteristic signals corresponding to adducts, the systems based on electron transfer mechanisms have been mentioned. ,, For instance, Long et al prepared single cobalt atomic sites anchored onto nitrogen-doped graphene (N-rGO-CoSA) as an activator for PI, and metastable N-rGO-CoSA–PI* complexes were identified as the predominant oxidants for oxidizing the pollutants . Xiao et al reported that anaerobic sewage sludge-derived biochar (SBC) could be used for PI activation, and 1 O 2 and SBC–PI* complexes were the dominant ROS .…”

“…11 Xiao et al reported that anaerobic sewage sludge-derived biochar (SBC) could be used for PI activation, and 1 O 2 and SBC−PI* complexes were the dominant ROS. 16 Although these studies of different technologies and mechanisms have promoted the development of PI-based AOPs, it is also necessary to develop more effective technologies and understand in-depth mechanisms for guiding practical remediation application.…”

“…Besides, in the PI activation systems using carbon materials, due to insufficient quenching of free-radical scavengers and undetectable electron spin resonance (ESR) characteristic signals corresponding to adducts, the systems based on electron transfer mechanisms have been mentioned. ,, For instance, Long et al prepared single cobalt atomic sites anchored onto nitrogen-doped graphene (N-rGO-CoSA) as an activator for PI, and metastable N-rGO-CoSA–PI* complexes were identified as the predominant oxidants for oxidizing the pollutants . Xiao et al reported that anaerobic sewage sludge-derived biochar (SBC) could be used for PI activation, and 1 O 2 and SBC–PI* complexes were the dominant ROS . Although these studies of different technologies and mechanisms have promoted the development of PI-based AOPs, it is also necessary to develop more effective technologies and understand in-depth mechanisms for guiding practical remediation application.…”

Recent advances in metal-free catalysts for the remediation of antibiotics, antibiotic resistant bacteria (ARB), and antibiotic resistant genes (ARGs)

“…3 The development of AOPs in the last decade (a) and the technical evolution of carbon-based AOPs for water decontamination (b). [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] following representative publications: Yu et al, 50 Duan et al, 51 Liu et al, 52 and Wang et al 20 2.1.1. Activated carbon.…”

“…The results demonstrated that sulfonamide antibiotics could be degraded in the urine matrix except for N 4 -acetyl-sulfamethoxazole, and the carbonate radical generated by the peroxymonocarbonate activation was deemed the dominant ROS in the BC/H 2 O 2 system. Xiao et al 42 revealed that BC fabricated from anaerobic sewage sludge could effectively activate PI to realize the degradation of organic acid II (Fig. 9c).…”