Enhancement of Sono-Fenton by P25-Mediated Visible Light Photocatalysis: Analysis of Synergistic Effect and Influence of Emerging Contaminant Properties

Qi, Lanyue; Lu, Wenyuan; Tian, Gengxu; Sun, Yang; Han, Jun; Xu, Lijie

doi:10.3390/catal10111297

Cited by 8 publications

(1 citation statement)

References 36 publications

(48 reference statements)

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“…Lastly, Fe-containing catalysts integrated with light and ultrasound improve the pollutant removal efficiency due to enhanced synergistic interaction in a process called sono-photo-Fenton catalysis ( Moradi et al, 2020 ; Qi et al, 2020 ). The reaction of ferrous ions with in situ produced H 2 O 2 during sonophotocatalytic reactions provides free additional radicals that facilitate the degradation of dissolved contaminants ( Moradi et al, 2022 ).…”

Section: Efficiency and Enhancement Strategiesmentioning

confidence: 99%

Advances on sonophotocatalysis as a water and wastewater treatment technique: efficiency, challenges and process optimisation

Mapukata,

Ntsendwana,

Mokhena

et al. 2023

Front. Chem.

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Due to water shortage and increased water pollution, various methods are being explored to improve water quality by treating contaminants. Sonophotocatalysis is a combination of two individual water treatment processes i.e., photocatalysis and sonocatalysis. With advantages including shorter reaction times and enhanced activity, this technique shows possible futuristic applications as an efficient water treatment technology. Herein, background insight on sonophotocalysis as a water and wastewater treatment technique as well as the general mechanism of activity is explained. The commonly used catalysts for sonophotocatalytic applications as well as their synthesis pathways are also briefly discussed. Additionally, the utilisation of sonophotocatalysis for the disinfection of various microbial species as well as treatment of wastewater pollutants including organic (dyes, pharmaceuticals and pesticides) and inorganic species (heavy metals) is deliberated. This review also gives a critical analysis of the efficiency, enhancement strategies as well as challenges and outlooks in this field. It is thus intended to give insight to researchers in the context of facilitating future developments in the field of water treatment, and advancing sonophotocatalysis towards large-scale implementation and commercialization.

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Section: Efficiency and Enhancement Strategiesmentioning

confidence: 99%

Advances on sonophotocatalysis as a water and wastewater treatment technique: efficiency, challenges and process optimisation

Mapukata,

Ntsendwana,

Mokhena

et al. 2023

Front. Chem.

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Recent Advances in Pharmaceutical Degradation Using Fenton Oxidation

Kulabhi,

Shukla,

Sharma

et al. 2023

Springer Proceedings in Energy

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Systematic study of the synergistic and kinetics effects on the removal of contaminants of emerging concern from water by ultrasound in the presence of diverse oxidants

Estrada-Flórez,

Serna-Galvis,

Lee

et al. 2023

Environ Sci Pollut Res

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The enhancement of the ultrasound system by adding diverse oxidants to remove a model contaminant (acetaminophen, ACE) in water was investigated. Different parameters were evaluated to study their effect on both the degradation kinetics and the synergy of the combination. The variables studied were the ultrasonic frequency (575, 858, and 1135 kHz), type of oxidant (hydrogen peroxide, sodium peroxydisulfate (or persulfate, PDS), and potassium peroxymonosulfate (PMS)), ACE concentration (4, 8, and 40 µM), and oxidant concentration (0.01, 0.1, 1, and 5 mM). Particular interest was placed on synergistic effects, implying that one process (or both) is activated by the other to lead to greater efficiency. Interestingly, the parameters that led to the higher synergistic effects did not always lead to the most favorable degradation kinetics. An increase in ACE removal of 20% was obtained using the highest frequency studied (1135 kHz), PMS 0.1 mM, and the highest concentration of ACE (40 µM). The intensification of degradation was mainly due to the ability of ultrasound to activate oxidants and produce extra hydroxyl radicals (HO•) or sulfate radicals (SO4•–). Under these conditions, treatment of ACE spiked into seawater, hospital wastewater, and urine was performed. The hospital wastewater matrix inhibited ACE degradation slightly, while the urine components inhibited the pollutant degradation completely. The inhibition was mainly attributed to the competing organic matter in the effluents for the sono-generated radical species. On the contrary, the removal of ACE in seawater was significantly intensified due to “salting out” effects and the production of the strong oxidant HOCl from the reaction of chloride ions with PMS.

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Enhancement of Sono-Fenton by P25-Mediated Visible Light Photocatalysis: Analysis of Synergistic Effect and Influence of Emerging Contaminant Properties

Cited by 8 publications

References 36 publications

Advances on sonophotocatalysis as a water and wastewater treatment technique: efficiency, challenges and process optimisation

Advances on sonophotocatalysis as a water and wastewater treatment technique: efficiency, challenges and process optimisation

Recent Advances in Pharmaceutical Degradation Using Fenton Oxidation

Systematic study of the synergistic and kinetics effects on the removal of contaminants of emerging concern from water by ultrasound in the presence of diverse oxidants

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