The DOI matches its Crossref record; 69 of the 69 references it cites were found in a registry or an index.
Combination of hydrodynamic cavitation and SR-AOPs for simultaneous degradation of BTEX in water
Abstract
Abstract Hydrodynamic cavitation (HC) is an emerging technology gaining interest in water treatment for use in elimination of a wide range of organic pollutants. The energy released during cavitation phenomenon has number of applications and, particularly, it can be utilized for activation of persulfate (PS) and peroxymonosulfate (PMS). In the present study, hybrid techniques: HC combined with persulfates - HC-PS and HC-PMS were tested for the degradation of BTEX in water. Studies on the effect of initial PS and PMS concentration showed that a molar ratio of the oxidant to BTEX equal to 5 is favorable for both cases. Thus, in 240 min HC-PS-5 process allowed to degrade 91.51%, 95.50%, 94.65%, 94.95% of benzene, toluene, ethylbenzene and o-xylene, respectively, while 90.85%, 94.50%, 94.36%, 93.07% of those compounds were degraded by HC-PMS-5. BTEX degradation pathway was proposed for HC-PS-5 and HC-PMS-5 processes relying on the identification of the main reaction intermediates using liquid chromatography coupled with UV diode array detector (HPLC-UV-DAD). Benzyl alcohol, phenol, benzoic acid, benzaldehyde and o-cresol were the main intermediates of BTEX degradation, which multistep pathway involved H-abstraction, OH addition and dealkylation in route to mineralization. At final time of treatment primary and secondary pollutants were effectively degraded. In terms of kinetics, BTEX degradation followed the pseudo-first-order reaction model and the degradation kinetics were faster in HC-PMS-5 system than in HC-PS-5. Surprisingly, the presence of chloride ions (Cl-) in HC-PMS-5 improved the degradation efficiency of alkylated benzene derivatives indicating a synergistic effect of Cl- with SO4•- radicals.
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Citations
Cites
Wang, J., & Wang, S. (2018) · Chemical Engineering Journal · doi:10.1016/j.cej.2017.11.059 · Cited by 4,087
Chemistry of persulfates in water and wastewater treatment: A review
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Catalytic oxidation of volatile organic compounds (VOCs) – A review
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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
Mechanism of Base Activation of Persulfate
Furman, O. S., Teel, A. L., & Watts, R. J. (2010) · Environmental Science & Technology · doi:10.1021/es1013714 · Cited by 1,396
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Wastewater treatment by means of advanced oxidation processes based on cavitation—A review
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Self-citationIn Situ Chemical Oxidation of Contaminated Soil and Groundwater Using Persulfate: A Review
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Cited by
Rayaroth, M. P., Aravindakumar, C. T., Shah, N. S., & Boczkaj, G. (2022) · Chemical Engineering Journal · doi:10.1016/j.cej.2021.133002 · Cited by 532
Self-citationAdvanced oxidation processes for the removal of mono and polycyclic aromatic hydrocarbons—A review
Rayaroth, M. P., Marchel, M., & Boczkaj, G. (2023) · Science of The Total Environment · doi:10.1016/j.scitotenv.2022.159043 · Cited by 158
Self-citationSonawane, S., Rayaroth, M. P., Landge, V. K., Fedorov, K., & Boczkaj, G. (2022) · Current Opinion in Chemical Engineering · doi:10.1016/j.coche.2022.100839 · Cited by 91
Self-citationIoannidi, A., Arvaniti, O. S., Nika, M.-C., Aalizadeh, R., Thomaidis, N. S., Mantzavinos, D., & Frontistis, Z. (2022) · Chemosphere · doi:10.1016/j.chemosphere.2021.131952 · Cited by 75
Philip, J. M., Koshy, C. M., Aravind, U. K., & Aravindakumar, C. T. (2022) · Journal of Environmental Chemical Engineering · doi:10.1016/j.jece.2022.107509 · Cited by 29
Metadata
- Authors
- Fedorov, K., Sun, X., & Boczkaj, G.
- Venue
- Chemical Engineering Journal
- Publisher
- Elsevier BV
- Published
- 2021-08
- Volume
- 417
- Pages
- 128081
- ISSN
- 1385-8947 (ISSN-L)
- OpenAlex
- W3113043164
- Cited by
- 616
- References
- 69
- FWCI
- 40.86
- Type
- journal article
- Language
- en
- Open access
- closed
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