Water Research, Год журнала: 2025, Номер 273, С. 123089 - 123089
Опубликована: Янв. 4, 2025
Язык: Английский
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
Процитировано
83
Environmental Chemistry Letters, Год журнала: 2024, Номер unknown
Опубликована: Сен. 2, 2024
Язык: Английский
Процитировано
27
Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 129578 - 129578
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
24
Separation and Purification Technology, Год журнала: 2025, Номер 361, С. 131417 - 131417
Опубликована: Янв. 7, 2025
Язык: Английский
Процитировано
4
Water Research, Год журнала: 2025, Номер 275, С. 123175 - 123175
Опубликована: Янв. 21, 2025
Язык: Английский
Процитировано
3
Separation and Purification Technology, Год журнала: 2025, Номер 361, С. 131509 - 131509
Опубликована: Янв. 8, 2025
Язык: Английский
Процитировано
2
Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131683 - 131683
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Фев. 7, 2025
Dissolved natural organic matter (NOM) significantly influences the performance of water treatment processes. It is generally recognized that NOM acts as a radical scavenger, thus inhibiting degradation pollutants in advanced oxidation processes (AOPs). This study examined impacts 8 different isolates on 4-chlorophenol (CP), representative phenolic pollutant, sulfate (SO4•-)-based AOPs. We developed an improved probe method to measure steady-state concentration SO4•- ([SO4•-]ss) both absence and presence NOM. Results show adding 1.00 mgC L-1 resulted only 1.3-3.4% decrease [SO4•-]ss. However, apparent rate constants CP decreased by 76-88%. discrepancy indicates scavenging cannot be primary mechanism for observed inhibition. proposed primarily reducing agent, reacting with phenoxy intermediates generated from single-electron SO4•-. Based this hypothesis, we validated kinetic model using experimental data. The reductive capacity NOM, determined model, correlates positively its electron-donating capacity. These findings enhance understanding NOM's role SO4•--based AOPs provide foundation developing strategies mitigate adverse effects.
Язык: Английский
Процитировано
2
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Март 18, 2025
Heterogeneous persulfate-based advanced oxidation processes (PS-AOPs) have been gaining significant attention in water/wastewater treatment; however, the elucidation of mechanisms PS-AOPs has become increasingly complex as understanding potential reactive pathways expands and rigor corresponding characterizations intensifies. As such, accurately illustrating system with a robust convincing methodology is crucial, while influence substrates must not be overlooked. In this Perspective, established techniques critical issues are systematically compiled to serve practical guidelines. Additionally, newly proposed pathway, direct transfer process (DOTP), discussed comparison conventional mineralization by oxidative species (ROS) PS-AOPs. Overall, investigation PS-AOP across various heterogeneous systems remains contentious calls for standardization, which work aims valuable reference.
Язык: Английский
Процитировано
2
Environmental Science & Technology, Год журнала: 2024, Номер 58(42), С. 18496 - 18507
Опубликована: Окт. 9, 2024
Advanced oxidation processes (AOPs) are rapidly evolving but still lack well-established protocols for reliably identifying oxidative reactive species (ORSs). This Perspective presents both the radical and nonradical ORSs that have been identified or proposed, along with extensive controversies surrounding mechanisms. Conventional identification tools, such as quenchers, probes, spin trappers, might be inadequate analytical demands of systems in which multiple coexist, often yielding misleading results. Therefore, challenges these complex, short-lived, transient must fully acknowledged. Refining methods is necessary, supported by rigorous experiments innovative paradigms, particularly through kinetic analysis based on situ spectroscopic techniques multiple-probe strategies. To demystify complex ORSs, future efforts should made to develop advanced tools strategies enhance mechanism understanding. In addition, integrating real-world conditions into experimental designs will establish a reliable framework fundamental studies, providing more accurate insights effectively guiding design AOPs.
Язык: Английский
Процитировано
16