Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 117009 - 117009
Published: May 9, 2025
Language: Английский
Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 117009 - 117009
Published: May 9, 2025
Language: Английский
Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(24), P. 10415 - 10444
Published: June 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.
Language: Английский
Citations
84Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129578 - 129578
Published: Sept. 1, 2024
Language: Английский
Citations
28Environmental Chemistry Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 2, 2024
Language: Английский
Citations
27Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131417 - 131417
Published: Jan. 7, 2025
Language: Английский
Citations
4Water Research, Journal Year: 2025, Volume and Issue: 275, P. 123175 - 123175
Published: Jan. 21, 2025
Language: Английский
Citations
3Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(42), P. 18496 - 18507
Published: Oct. 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.
Language: Английский
Citations
16Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131509 - 131509
Published: Jan. 8, 2025
Language: Английский
Citations
2Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131683 - 131683
Published: Jan. 1, 2025
Language: Английский
Citations
2Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 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.
Language: Английский
Citations
2Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown
Published: March 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.
Language: Английский
Citations
2