Performance and mechanism analysis of degradation of toluene by DBD plasma-catalytic method with MnOx/Al2O3 catalyst

Dong, Senlin; Wang, Yifan; Yang, Jie; Cao, Jing; Su, Lin; Xiao, Wu; Nengzi, Li-chao; Liu, Shengyu

doi:10.1016/j.fuel.2022.123721

Cited by 10 publications

(1 citation statement)

References 48 publications

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“…can be enhanced by combining photocatalysis and plasma [28][29][30][31][32][33][34]. This finding confirms the in situ regeneration of the photocatalytic support in the presence of plasma [35][36][37][38][39][40][41].…”

Section: Reusability and In Situ Regenerationsupporting

confidence: 77%

Treatment of Mixture Pollutants with Combined Plasma Photocatalysis in Continuous Tubular Reactors with Atmospheric-Pressure Environment: Understanding Synergetic Effect Sources

Khezami,

Assadi

2023

Materials

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This study investigates the pilot-scale combination of nonthermal plasma and photocatalysis for removing Toluene and dimethyl sulfur (DMDS), examining the influence of plasma energy and initial pollutant concentration on the performance and by-product formation in both pure compounds and mixtures. The results indicate a consistent 15% synergy effect, improving Toluene conversion rates compared to single systems. Ozone reduction and enhanced CO2 selectivity were observed when combining plasma and photocatalysis. This process effectively treats pollutant mixtures, even those containing sulfur compounds. Furthermore, tests confirm nonthermal plasma’s in-situ regeneration of the photocatalytic surface, providing a constant synergy effect.

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Section: Reusability and In Situ Regenerationsupporting

confidence: 77%

Treatment of Mixture Pollutants with Combined Plasma Photocatalysis in Continuous Tubular Reactors with Atmospheric-Pressure Environment: Understanding Synergetic Effect Sources

Khezami,

Assadi

2023

Materials

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Degradation of atrazine in river sediment by dielectric barrier discharge plasma (DBDP) combined with a persulfate (PS) oxidation system: response surface methodology, degradation mechanisms, and pathways

Gao

Deng

et al. 2023

Environ Sci Pollut Res

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Single degradation systems based on dielectric barrier discharge plasma (DBDP) or persulfate (PS) oxidation cannot achieve the desired goals (high degradation e ciency, high mineralization rate and low product toxicity) of degrading atrazine (ATZ) in river sediment. In this study, DBDP was combined with a PS oxidation system (DBDP/PS synergistic system) to degrade ATZ in river sediment. A Box-Behnken design (BBD) design including ve factors (discharge voltage, air ow, initial concentration, oxidizer dose and activator dose) and three levels (-1, 0 and 1) was established to test a mathematical model by response surface methodology (RSM). The results con rmed that the degradation e ciency of ATZ in river sediment was 96.5% in the DBDP/PS synergistic system after 10 min of degradation. The experimental total organic carbon (TOC) removal e ciency results proved that 85.3% of ATZ is mineralized into CO 2 , H 2 O and NH 4 + , which effectively reduces the possible biological toxicity of the intermediate products. Active species (sulfate (SO 4 • − ), hydroxy (•OH) and superoxide (•O 2 − ) radicals) were found to exert positive effects in the DBDP/PS synergistic system and illustrated the degradation mechanism of ATZ. The ATZ degradation pathway, composed of 7 main intermediates, was clari ed by fourier transform infrared spectroscopy (FTIR) and gas chromatography-mass spectrometry (GC-MS).This study indicates that the DBDP/PS synergistic system is a highly e cient, environmentally friendly, novel method for the remediation of river sediment containing ATZ pollution.

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MnO2 film promoted plasma-catalytic oxidation of HCHO and the identified active species on tubular ionizer

Su¹,

Liu²,

Li³

et al. 2023

Applied Catalysis A: General

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Performance and mechanism analysis of degradation of toluene by DBD plasma-catalytic method with MnOx/Al2O3 catalyst

Cited by 10 publications

References 48 publications

Treatment of Mixture Pollutants with Combined Plasma Photocatalysis in Continuous Tubular Reactors with Atmospheric-Pressure Environment: Understanding Synergetic Effect Sources

Treatment of Mixture Pollutants with Combined Plasma Photocatalysis in Continuous Tubular Reactors with Atmospheric-Pressure Environment: Understanding Synergetic Effect Sources

Degradation of atrazine in river sediment by dielectric barrier discharge plasma (DBDP) combined with a persulfate (PS) oxidation system: response surface methodology, degradation mechanisms, and pathways

MnO2 film promoted plasma-catalytic oxidation of HCHO and the identified active species on tubular ionizer

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