The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Activation of Persulfate by Quinones: Free Radical Reactions and Implication for the Degradation of PCBs
Abstract
There has been considerable interest in the use of persulfate for in situ chemical oxidation of organic contaminants in soils, sediments, and groundwater. Since humic acid (HA) exists ubiquitously in these environmental compartments, its redox active functional moieties, such as quinones, may play an important role in the oxidation processes of persulfate treatments. Understanding the effects of HA, especially the quinone functional groups on the degradation of pollutants by persulfate and the production of sulfate radicals (SO4(•-)) from persulfate, is beneficial for devising effective and economically feasible remediation strategies. In this study, the effects of model quinone compounds and HA on the degradation of 2,4,4'-trichlorobiphenyl (PCB28) by persulfate and the production of SO4(•-) from persulfate were investigated. It was found that quinones and HA can efficiently activate persulfate for the degradation of PCB28. The mechanism of persulfate activation was elucidated by quenching and electron paramagnetic resonance (EPR) studies. The results indicated that production of SO4(•-) from persulfate and quinones was semiquinone radical-dependent. The effects of quinone concentrations were also studied. The findings of this study elucidated a new pathway of persulfate activation, which could degrade environmental contaminants efficiently and provide useful information for the remediation of contaminated soil and water by persulfate.
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Citations
Cites
Reduction potentials of one-electron couples involving free radicals in aqueous solution
Wardman, P. (1989) · Journal of Physical and Chemical Reference Data · doi:10.1063/1.555843 · Cited by 2,123
Humic substances as electron acceptors for microbial respiration
Lovley, D. R., Coates, J. D., Blunt-Harris, E. L., Phillips, E. J. P., & Woodward, J. C. (1996) · Nature · doi:10.1038/382445a0 · Cited by 1,834
Natural Organic Matter as Reductant for Chlorinated Aliphatic Pollutants
Kappler, A., & Haderlein, S. B. (2003) · Environmental Science & Technology · doi:10.1021/es0201808 · Cited by 197
Cited by
Wang, J., & Wang, S. (2018) · Chemical Engineering Journal · doi:10.1016/j.cej.2017.11.059 · Cited by 4,087
Reactive Species in Advanced Oxidation Processes: Formation, Identification and Reaction Mechanism
Wang, J., & Wang, S. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2020.126158 · Cited by 1,585
Fang, G., Gao, J., Liu, C., Dionysiou, D. D., Wang, Y., & Zhou, D. (2014) · Environmental Science & Technology · doi:10.1021/es4048126 · Cited by 802
Self-citationInsights into Heterogeneous Catalysis of Persulfate Activation on Dimensional-Structured Nanocarbons
Duan, X., Sun, H., Kang, J., Wang, Y., Indrawirawan, S., & Wang, S. (2015) · ACS Catalysis · doi:10.1021/acscatal.5b00774 · Cited by 799
Zhang, T., Chen, Y., Wang, Y., Le Roux, J., Yang, Y., & Croué, J.-P. (2014) · Environmental Science & Technology · doi:10.1021/es501218f · Cited by 798
Metadata
- Authors
- Fang, G., Gao, J., Dionysiou, D. D., Liu, C., & Zhou, D.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-04-26
- Volume
- 47
- Issue
- 9
- Pages
- 4605-4611
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2321363019
- Cited by
- 822
- References
- 3
- FWCI
- 26.03
- Type
- journal article
- Language
- en
- Open access
- closed
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