Fire-Induced Multiple Changes in Electron Transfer Properties of Peat Soil Organic Matter: The Role of Functional Groups, Graphitic Carbon, and Iron

Environmental Science & Technology, Год журнала: 2024, Номер 58(46), С. 20457 - 20467

Опубликована: Ноя. 8, 2024

Peatland fires induced changes in electron transfer properties and relevant electroactive structures of peat soil organic matter (PSOM) remain ambiguous, impeding comprehension postfire biogeochemical processes. Here, we revealed temperature-dependent exchange capacity (EEC) PSOM dynamics through simulated burning (150-500 °C), which extremely changed microbial Fe-nanoparticles reduction methanogenesis. EEC diminished significantly (60-75% loss) due to phenolic-quinone moieties depletion with increasing temperature, regardless oxygen availability. The final oxic surpassed that anoxic by 1.5 times, attributed additional quinones from incorporation. Notably, exhibited heat resistance up 200 °C stabilized above 350 °C. Additionally, fire reshaped the EEC-relevant redox-active moieties. Heterocyclic-N generated predominantly contributed electron-accepting (EAC) alongside quinones, while phenolic bonded Fe(II) enhanced electron-donating (EDC). However, preferential binding heterocyclic-N restricted EDC Fe(II). Interestingly, decrease EAC declined its electron-shuttling effects Fe nanoparticle reduction, but fire-induced graphitic carbon formation increased electrical conductivity (EC) PSOM, promoting transfer. Further, EC may facilitate methanogenesis peatlands. These findings advance our understanding elemental cycles greenhouse emission mechanisms

Язык: Английский

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Ferrate (VI) oxidation of sulfamethoxazole enhanced by magnetized sludge-based biochar: Active sites regulation and degradation mechanism analysis

Environmental Pollution, Год журнала: 2024, Номер 359, С. 124681 - 124681

Опубликована: Авг. 10, 2024

Язык: Английский

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Natural Attenuation of 2,4-Dichlorophenol in Fe-Rich Soil during Redox Oscillations: Anoxic–Oxic Coupling Mechanism

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Июль 19, 2024

Natural attenuation of organic contaminants can occur under anoxic or oxic conditions. However, the effect coupling anoxic-oxic process, which often happens in subsurface soil, on contaminant transformation remains poorly understood. Here, we investigated 2,4-dichlorophenol (2,4-DCP) Fe-rich soil alternation. The and periods alternating system showed faster 2,4-DCP than corresponding control single systems; therefore, a higher rate (63.4%) was obtained relative to systems (27.9-42.4%). Compared stable pH system, presented clear OH

Язык: Английский

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Simultaneous removal of antibiotics and recovery of phosphate in urine by ferrate(VI)-peracetic acid: The critical role of iron species

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 130154 - 130154

Опубликована: Окт. 1, 2024

Язык: Английский

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Eliminating bacterial endotoxins and associated inhalation hazards in reclaimed water via ultraviolet/ferrate combination disinfection

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157983 - 157983

Опубликована: Дек. 1, 2024

Язык: Английский

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Ethylcellulose encapsulated material for potassium ferrate slow-release to degrade levofloxacin: Degradation performance, mechanisms, and toxicity assessment

Journal of environmental chemical engineering, Год журнала: 2024, Номер unknown, С. 115119 - 115119

Опубликована: Дек. 1, 2024

Язык: Английский

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Iron-doped carbon nanotubes with magnetic enhanced Fe(VI) degradation of arsanilic acid and inorganic arsenic: Role of intermediate iron species and electron transfer

Environmental Research, Год журнала: 2023, Номер 244, С. 117849 - 117849

Опубликована: Дек. 5, 2023

Язык: Английский

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Enhanced diclofenac abatement by ferrate in the presence of montmorillonite: Trapping in-situ formed Fe(III)

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(4), С. 113160 - 113160

Опубликована: Май 24, 2024

Язык: Английский

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Synergistic degradation of polycyclic aromatic hydrocarbons using ferrate(VI) and periodate: Efficiency and mechanisms

Chemical Engineering Journal, Год журнала: 2024, Номер 504, С. 158838 - 158838

Опубликована: Дек. 21, 2024

Язык: Английский

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Persulfate activation by iron complex: A novel non-radical strategy for enhanced tetracycline degradation

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 131364 - 131364

Опубликована: Дек. 1, 2024

Язык: Английский

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