Multiple Roles of Dissolved Organic Matter in Advanced Oxidation Processes

Environmental Science & Technology, Год журнала: 2022, Номер 56(16), С. 11111 - 11131

Опубликована: Июль 7, 2022

Advanced oxidation processes (AOPs) can degrade a wide range of trace organic contaminants (TrOCs) to improve the quality potable water or discharged wastewater effluents. Their effectiveness is impacted, however, by dissolved matter (DOM) that ubiquitous in all sources. During application an AOP, DOM scavenge radicals and/or block light penetration, therefore impacting their toward contaminant transformation. The multiple ways which different types sources impact oxidative purification are critically reviewed. inhibit degradation TrOCs, but it also enhance formation and reactivity useful for elimination alter transformation pathways contaminants. An in-depth analysis highlights inhibitory effect on efficiency TrOCs based DOM's structure optical properties its oxidants as well synergistic contribution from redox transient intermediates. AOPs influence types, mechanisms, extent byproducts formation. Research needs proposed advance practical understanding how be exploited purification.

Язык: Английский

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Surface oxygen vacancies prompted the formation of hydrated hydroxyl groups on ZnO in enhancing interfacial catalytic ozonation

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123325 - 123325

Опубликована: Сен. 24, 2023

Язык: Английский

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Review of advanced oxidation processes for treating hospital sewage to achieve decontamination and disinfection

Chinese Chemical Letters, Год журнала: 2023, Номер 35(1), С. 108714 - 108714

Опубликована: Июнь 21, 2023

Язык: Английский

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Accelerated Fe(III)/Fe(II) cycle for rapid elimination of Rhodamine B by a novel Mo2C co-catalytic Fe2+/H2O2 system

Journal of Cleaner Production, Год журнала: 2023, Номер 393, С. 136354 - 136354

Опубликована: Фев. 4, 2023

Язык: Английский

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Targeted Decomplexation of Metal Complexes for Efficient Metal Recovery by Ozone/Percarbonate

Environmental Science & Technology, Год журнала: 2023, Номер 57(12), С. 5034 - 5045

Опубликована: Март 14, 2023

Traditional methods cannot efficiently recover Cu from Cu(II)–EDTA wastewater and encounter the formation of secondary contaminants. In this study, an ozone/percarbonate (O3/SPC) process was proposed to decomplex simultaneously Cu. The results demonstrate that O3/SPC achieves 100% recovery with corresponding kobs value 0.103 min–1 compared typical •OH-based O3/H2O2 (81.2%, 0.042 min–1). carbonate radical anion (CO3•–) is generated carries out targeted attack amino groups for decarboxylation deamination processes, resulting in successive cleavage Cu–O Cu–N bonds. comparison, predominantly responsible breakage bonds via formic acid removal. Moreover, released Cu(II) can be transformed into stable copper precipitates by employing endogenous precipitant (CO32–), accompanied toxic-free byproducts process. More importantly, exhibits excellent metal treatment real electroplating other metal–EDTA complexes. This study provides a promising technology opens new avenue efficient decomplexation metal–organic complexes simultaneous valuable resources.

Язык: Английский

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Hydroxyl radicals in ozone-based advanced oxidation of organic contaminants: A review

Environmental Chemistry Letters, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

Язык: Английский

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Unraveling the Presence and Positions of Nitrogen Defects in Defective g‐C₃N₄ for Improved Organic Photocatalytic Degradation: Insights from Experiments and Theoretical Calculations

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Июнь 28, 2024

Abstract In this work, nitrogen‐defective g‐C 3 N 4 with different nitrogen defect densities is synthesized for ciprofloxacin photocatalytic degradation. Compared pristine , etched NaBH 1 h exhibits an approximately ten‐fold increase in the rate constant of (CIP) The combined experimental analysis and theoretical calculations reveal that defects can be incorporated into all sites C─N═C most susceptible site. By incorporating to induce states between conduction band (CB) valence (VB), electronic structures are tuned. induced downshifted approach valance band, reaching increased density within optimum ranges accommodate excited electrons narrow bandgap, extend light absorption capability, enhance charge carrier separation transfer efficiency. by 2 over‐introduced a declined performance due deteriorated structure, over‐downshifted turn out new recombination center carriers.

Язык: Английский

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Activated sodium percarbonate-ozone (SPC/O3) hybrid hydrodynamic cavitation system for advanced oxidation processes (AOPs) of 1,4-dioxane in water

Chemical Engineering Journal, Год журнала: 2022, Номер 456, С. 141027 - 141027

Опубликована: Дек. 17, 2022

Язык: Английский

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In-situ formation of surface reactive oxygen species on defective sites over N-doped biochar in catalytic ozonation

Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140232 - 140232

Опубликована: Ноя. 9, 2022

Язык: Английский

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Tungsten carbide induced acceleration of Fe3+/Fe2+ cycle in Fe2+/PMS process for rapid degradation of tetracycline hydrochloride

Separation and Purification Technology, Год журнала: 2023, Номер 330, С. 125311 - 125311

Опубликована: Окт. 11, 2023

Язык: Английский

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