Persistent free radicals in biochar enhance superoxide-mediated Fe (III)/Fe (II) cycling and the efficacy of CaO2 Fenton-like treatment
S Zhang, Y Wei, J Metz, S He, PJJ Alvarez… - Journal of Hazardous …, 2022 - Elsevier
Abstract Superoxide radicals (O 2•-) produced by the reaction of Fe (III) with H 2 O 2 can
regenerate Fe (II) in Fenton-like reactions, and conditions that facilitate this function enhance …
regenerate Fe (II) in Fenton-like reactions, and conditions that facilitate this function enhance …
Effects of heterogeneous metals on the generation of persistent free radicals as critical redox sites in iron-containing biochar for persulfate activation
C Huang, F Qin, C Zhang, D Huang, L Tang… - ACS ES&T …, 2022 - ACS Publications
Metal components have critical influences on the generation of persistent free radicals
(PFRs) in biochar. However, little is known about the effect on the formation of PFRs brought …
(PFRs) in biochar. However, little is known about the effect on the formation of PFRs brought …
Accelerating Fe2+/Fe3+ cycle via biochar to improve catalytic degradation efficiency of the Fe3+/persulfate oxidation
Abstract The sluggish Fe 3+/Fe 2+ cycle was the rate-limiting step in the Fenton-like
reaction, and metal-free carbonaceous materials are considered as emerging alternatives to …
reaction, and metal-free carbonaceous materials are considered as emerging alternatives to …
Formation, characteristics, and applications of environmentally persistent free radicals in biochars: a review
Due to abundant biomass and eco-friendliness, biochar is exemplified as one of the most
promising candidates to mediate the degradation of environmental contaminants. Recently …
promising candidates to mediate the degradation of environmental contaminants. Recently …
N, S-codoped biochar outperformed N-doped biochar on co-activation of H2O2 with trace dissolved Fe (Ⅲ) for enhanced oxidation of organic pollutants
M Lai, J Li, H Li, Y Gui, J Lü - Environmental Pollution, 2023 - Elsevier
Co-activation of H 2 O 2 with biochar and iron sources together provides an attractive
strategy for efficient removal of refractory pollutants, because it can solve the problems of …
strategy for efficient removal of refractory pollutants, because it can solve the problems of …
Biochar enhanced the degradation of organic pollutants through a Fenton process using trace aqueous iron
D Feng, J Lü, S Guo, J Li - Journal of Environmental Chemical Engineering, 2021 - Elsevier
The Fenton process is among the most popular technique for oxidation of organic pollutants,
but faces the challenges of slow Fe (III)/Fe (II) cycling, limited radical dot OH production, and …
but faces the challenges of slow Fe (III)/Fe (II) cycling, limited radical dot OH production, and …
Fe3S4/biochar catalysed heterogeneous Fenton oxidation of organic contaminants: Hydrogen peroxide activation and biochar enhanced reduction of Fe (III) to Fe (II)
PM Bhuyan, S Borah, BK Bhuyan, S Hazarika… - Separation and …, 2023 - Elsevier
Greigite and biochar are two important materials recently gaining importance in Fenton
catalysis to remove organic contaminants. Each material, however, has significant …
catalysis to remove organic contaminants. Each material, however, has significant …
High-efficiency degradation of organic pollutants with Fe, N co-doped biochar catalysts via persulfate activation
In this study, the Fe, N co-doped biochar (Fe-N-BC) was prepared by pyrolyzing wheat
straw, urea and iron salts and used to activate persulfate (peroxydisulfate, PS) for organic …
straw, urea and iron salts and used to activate persulfate (peroxydisulfate, PS) for organic …
[HTML][HTML] Boron carbide boosted Fenton-like oxidation: A novel Fe (III)/Fe (II) circulation
The sluggish kinetics of Fe (Ⅱ) recovery in Fenton/Fenton-like reactions significantly limits
the oxidation efficiency. In this study, we for the first time use boron carbide (BC) as a green …
the oxidation efficiency. In this study, we for the first time use boron carbide (BC) as a green …
Key role of persistent free radicals in hydrogen peroxide activation by biochar: implications to organic contaminant degradation
We investigated the activation of hydrogen peroxide (H2O2) by biochars (produced from
pine needles, wheat, and maize straw) for 2-chlorobiphenyl (2-CB) degradation in the …
pine needles, wheat, and maize straw) for 2-chlorobiphenyl (2-CB) degradation in the …