Review of characteristics, generation pathways and detection methods of singlet oxygen generated in advanced oxidation processes (AOPs)

Chemical Engineering Journal, Год журнала: 2023, Номер 468, С. 143778 - 143778

Опубликована: Май 29, 2023

Язык: Английский

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Generation and identification of 1O2 in catalysts/peroxymonosulfate systems for water purification

Water Research, Год журнала: 2023, Номер 245, С. 120614 - 120614

Опубликована: Сен. 11, 2023

Язык: Английский

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Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details

Environmental Science & Technology, Год журнала: 2024, Номер 58(24), С. 10415 - 10444

Опубликована: Июнь 7, 2024

Persulfate (PS)-based advanced oxidation processes (AOPs) for pollutant removal have attracted extensive interest, but some controversies about the identification of reactive species were usually observed. This critical review aims to comprehensively introduce basic concepts and rectify cognitive biases appeals pay more attention experimental details in PS-AOPs, so as accurately explore reaction mechanisms. The scientifically summarizes character, generation, different species. It then highlights complexities analysis electron paramagnetic resonance, uncertainties use probes scavengers, necessities determination scavenger concentration. importance choice buffer solution, operating mode, terminator, filter membrane is also emphasized. Finally, we discuss current challenges future perspectives alleviate misinterpretations toward mechanisms PS-AOPs.

Язык: Английский

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Progress on mechanism and efficacy of heterogeneous photocatalysis coupled oxidant activation as an advanced oxidation process for water decontamination

Water Research, Год журнала: 2024, Номер 251, С. 121119 - 121119

Опубликована: Янв. 8, 2024

Язык: Английский

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A critical review on reliability of quenching experiment in advanced oxidation processes

Chemical Engineering Journal, Год журнала: 2023, Номер 466, С. 143161 - 143161

Опубликована: Апрель 23, 2023

Язык: Английский

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Advanced oxidation processes for water and wastewater treatment – Guidance for systematic future research

Heliyon, Год журнала: 2024, Номер 10(9), С. e30402 - e30402

Опубликована: Апрель 28, 2024

Advanced oxidation processes (AOPs) are a growing research field with large variety of different process variants and materials being tested at laboratory scale. However, despite extensive in recent years decades, many have not been transitioned to pilot- full-scale operation. One major concern the inconsistent experimental approaches applied across studies that impede identification, comparison, upscaling most promising AOPs. The aim this tutorial review is streamline future on development new solutions for advanced by providing guidance comparable scalable experiments. We discuss developments catalytic, ozone-based, radiation-driven, other AOPs, outline perspectives needs. Since standardized procedures available we propose basic rules key parameters lab-scale evaluation AOPs including selection suitable probe compounds scavengers measurement (major) reactive species. A two-phase approach assess AOP concepts proposed, consisting (i) proof-of-concept (technology readiness levels (TRL) 1-3), followed (ii) intended water matrix cost comparison an established process, applying such as UV fluence or ozone consumption (TRL 3-5). Subsequent demonstration 6-7) briefly discussed, too. Finally, highlight important tools thorough mechanistic risk assessment screening transformation products should be based chemical logic combined complementary (mass balance, calculations).

Язык: Английский

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Schottky heterojunction-based photocatalysis-in-situ-self-Fenton system: Removal of tetracycline hydrochloride and biotoxicity evaluation of intermediates

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 360, С. 124533 - 124533

Опубликована: Авг. 25, 2024

Язык: Английский

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Advancements in heterogeneous activation of persulfates: Exploring mechanisms, challenges in organic wastewater treatment, and innovative solutions

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148789 - 148789

Опубликована: Янв. 18, 2024

Язык: Английский

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Z-Scheme Heterojunction α-Fe₂O₃/Tubular g-C₃N₄ with C Defects for Photocatalytic Degradation of Microcystin-LR in Water: Generation and Effect of Critical Species ¹O₂

ACS Catalysis, Год журнала: 2024, Номер 14(8), С. 6272 - 6291

Опубликована: Апрель 10, 2024

Microcystin-LR (MC-LR) is susceptible to degradation by singlet oxygen (1O2) attack due multiple unsaturated olefinic bond sites. In this study, the Z-scheme heterojunction α-Fe2O3/tubular g-C3N4 with C defects (α-Fe2O3/TDCN) was synthesized via hydrothermal and cocalcination methods. The efficient generation of 1O2 realized enhancing photogenerated carrier separation adsorption capabilities used investigate process mechanism MC-LR. results show that rate MC-LR can reach nearly 100% within 60 min under visible light irradiation, α-Fe2O3/TDCN possesses good stability environmental friendliness. relationship between photocatalyst performance analyzed density functional theory (DFT) calculations. Based on probe experiments, LC–MS data, DFT calculations, mineralization dominated analyzed. This study provides a reference for addressing pollution in eutrophic aquatic environments direction specific control mineralization.

Язык: Английский

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Development of a Five-Chemical-Probe Method to Determine Multiple Radicals Simultaneously in Hydroxyl and Sulfate Radical-Mediated Advanced Oxidation Processes

Environmental Science & Technology, Год журнала: 2024, Номер 58(12), С. 5616 - 5626

Опубликована: Март 12, 2024

Advanced oxidation processes (AOPs), such as hydroxyl radical (HO•)- and sulfate (SO4•–)-mediated oxidation, are attractive technologies used in water wastewater treatments. To evaluate the treatment efficiencies of AOPs, monitoring primary radicals (HO• SO4•–) well secondary generated from reaction HO•/SO4•– with matrices is necessary. Therefore, we developed a novel chemical probe method to examine five key simultaneously, including HO•, SO4•–, Cl•, Cl2•–, CO3•–. Five probes, nitrobenzene, para-chlorobenzoic acid, benzoic 2,4,6-trimethylbenzoic 2,4,6-trimethylphenol, were selected this study. Their bimolecular rate constants diverse first calibrated under same conditions minimize systematic errors. Three typical AOPs (UV/H2O2, UV/S2O82–, UV/HSO5–) tested obtain steady-state concentrations. The effects dissolved organic matter, Br–, concentration inspected. Our results suggest that five-probe can accurately measure HO•- SO4•–-mediated when Br– DOM less than 4.0 μM 15 mgC L–1, respectively. Overall, practical easily accessible determine multiple simultaneously.

Язык: Английский

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