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- Liu, Cun, et al. Show all 5 Authors
- Environmental Science & Technology 2015 v.49 no.9 pp. 5645-5653
- biochar; biomass; catechol; chemical degradation; copper; hydroquinone; iron; nickel; phenol; polluted soils; polychlorinated biphenyls; remediation; sulfates; superoxide anion; zinc
- ... This study investigated the effects of metals (Fe³⁺, Cu²⁺, Ni²⁺, and Zn²⁺) and phenolic compounds (PCs: hydroquinone, catechol, and phenol) loaded on biomass on the formation of persistent free radicals (PFRs) in biochar. It was found that metal and phenolic compound treatments not only increased the concentrations of PFRs in biochar but also changed the types of PFRs formed, which indicated that ...
- Liu, Cun, et al. Show all 6 Authors
- Environmental Science & Technology 2014 v.48 no.3 pp. 1902-1910
- biochar; conifer needles; corn straw; correlation; electron paramagnetic resonance spectroscopy; graphene; hexane; hydrogen peroxide; hydroxyl radicals; methanol; methylene chloride; salicylic acid; solvents; temperature; toluene; wheat
- ... 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 present study. It was found that H₂O₂ can be effectively activated by biochar, which produces hydroxyl radical (•OH) to degrade 2-CB. Furthermore, the activation mechanism was elucidated by electron paramagnetic resonance (EPR) a ...