Performance and potential mechanism of transformation of polycyclic aromatic hydrocarbons (PAHs) on various iron oxides

Remediation of PAHs contaminated industrial soils by hypochlorous acid: performance and mechanisms

“…42,43 Meanwhile, PBQ was chosen as a probe for superoxide radicals (˙O 2 − ) due to its high reactivity. 44 Fig. 4 showed the PAHs degradation behavior in the presence of IPA and PBQ, respectively.…”

“…) due to its high reactivity. 44 Fig. 4 showed the PAHs degradation behavior in the presence of IPA and PBQ, respectively.…”

Abiotic transformation of polycyclic aromatic hydrocarbons via interaction with soil components: A systematic review

“…In addition, the e g 1 electrons in the antibonding of Mn 3þ of MnO 2 can be trapped by O 2 , and the generated Fe 2þ on Fe 2 O 3 can react with the adsorbed oxygen. All of these processes can induce the production of O 2 À , facilitating the transformation of PAHs (Wang et al, 2020;Ni et al, 2021). For SOM, the EPFRs in SOM can also induce the formation of ROS.…”

“…On the other hand, abiotic transformation of PAHs may occur more than that of current thought, notably when biological activity is relatively low (Schaefer et al, 2013;Biache et al, 2013;Duan et al, 2015). However, the contribution of abiotic transformation for PAH attenuation in soils has been somewhat overlooked (Schaefer et al, 2013;Zhao et al, 2019;Ni et al, 2021).…”

Fate of pyrene on mineral surfaces during thermal remediation as a function of temperature

“…13,14 Hematite has been shown to degrade anthracene at ambient temperatures by the formation of superoxide in air (without bulk water present) or by electron-transfer in a nitrogen environment. 15 Both reaction mechanisms result in oxidized products, whether by reaction with ROS or oxidation by O 2 and/or H 2 O sorbed to the mineral surface. Manganese oxides have also been shown to degrade PAHs at ambient temperatures, effectively oxidizing the PAHs pyrene and anthracene.…”