Degradation mechanisms of 2,6-DCBQ in various advanced oxidation processes and ecotoxicity of degradation byproducts DOI

Juanbao Wang,

Li Lv,

Fanghui Yuan

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 117009 - 117009

Published: May 9, 2025

Language: Английский

Were Persulfate-Based Advanced Oxidation Processes Really Understood? Basic Concepts, Cognitive Biases, and Experimental Details DOI
Xiaonan Hu, Mingshan Zhu

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

88
Hydroxyl radicals in ozone-based advanced oxidation of organic contaminants: A review DOI
Mei Dai, Qiuya Niu, Shaohua Wu

et al.

Environmental Chemistry Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 2, 2024

Language: Английский

Citations

29
Detection methodologies and mechanisms of reactive oxygen species generated in Fenton/Fenton-like processes DOI
Chi Zhang,

Linwei Liu,

Yuwei Pan

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129578 - 129578

Published: Sept. 1, 2024

Language: Английский

Citations

28
High-efficiency degradation and detoxification of emerging antibiotic contaminants by vacuum UV-activated persulfate: Oxidation performance, mechanism insight, and application potential DOI
Chuang Wang, Chengzhi Luo, Xiaohui Wang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131417 - 131417

Published: Jan. 7, 2025

Language: Английский

Citations

4
Vacuum UV-based processes for water and wastewater purification: From unitary to multicomponent systems DOI
Chuang Wang, Xiaohui Wang, Jinying Du

et al.

Water Research, Journal Year: 2025, Volume and Issue: 275, P. 123175 - 123175

Published: Jan. 21, 2025

Language: Английский

Citations

3
Confronting the Mysteries of Oxidative Reactive Species in Advanced Oxidation Processes: An Elephant in the Room DOI
Jing‐Hang Wu, Han‐Qing Yu

Environmental 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

16
Effective especially sustainable degradation of antibiotics in water via a stable slow-release persulfate hydrogel encapsulated by gelatin DOI

Zheshan Duan,

Xike Tian,

Zihan Zhuang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131509 - 131509

Published: Jan. 8, 2025

Language: Английский

Citations

2
Kinetics, contributions, and pathways of the degradation of artificial sweeteners by primary and secondary radicals during UV/persulfate DOI
Junhui Yue, Wei Guo,

Shengxu Liang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131683 - 131683

Published: Jan. 1, 2025

Language: Английский

Citations

2
The Role of Natural Organic Matter in the Degradation of Phenolic Pollutants by Sulfate Radical Oxidation: Radical Scavenging vs Reduction DOI
Teng Zhang, Peizeng Yang, Yuefei Ji

et al.

Environmental 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

2
Heterogeneous Peroxymonosulfate-Based Advanced Oxidation Mechanisms: New Wine in Old Bottles? DOI
Xiaoyu Zhao, Zhenghua Zhang

Environmental 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