Interfacial catalytic and mass transfer mechanisms of an electro-peroxone process for selective removal of multiple fluoroquinolones

Yao, Jingjing; Yu, Bolun; Li, Haipu; Yang, Ying

doi:10.1016/j.apcatb.2021.120608

Cited by 34 publications

(18 citation statements)

References 68 publications

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“…On the other hand, TOC removal was still faster at higher salinity keeping total transferred ozone the same, illustrating that the intraliquid mass transfer might also be enhanced, as evidenced by the higher liquid velocity at certain points on the centerline of the reactor (Figure S16). With better mixing of pollutants, ozone, and catalysts, the catalytic reactions between reactants would be more sufficient, , thus further promoting oxalate degradation.…”

Section: Resultsmentioning

confidence: 99%

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Ren

Yan

et al. 2023

Environ. Sci. Technol.

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Heterogeneous catalytic ozonation (HCO) is an effective technology for advanced wastewater treatment, while the influence of coexisting salts remains unclear and controversial. Here, we systematically explored the influence of NaCl salinity on the reaction and mass transfer of HCO through lab experiments, kinetic simulation, and computational fluid dynamics modeling, and proposed that the trade-off between reaction inhibition and mass transfer enhancement would affect the pollutants degradation pattern under varying salinity. The increase of NaCl salinity decreased ozone solubility and accelerated the futile consumption of ozone and hydroxyl radicals (•OH), and the maximum •OH concentration under 50 g/L salinity was only 23% of that without salinity. However, the increase of NaCl salinity also significantly reduced the ozone bubble size and enhanced the interphase and intraliquid mass transfer, with the volumetric mass transfer coefficient being 130% higher than that without salinity. The trade-off between reaction inhibition and mass transfer enhancement shifted under different pH values and aerator pore sizes, and the oxalate degradation pattern would change correspondingly. Besides, the trade-off was also identified for Na2SO4 salinity. These results emphasized the dual influence of salinity and offered a new theoretical perspective on the role of salinity in the HCO process.

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Section: Resultsmentioning

confidence: 99%

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Ren

Yan

et al. 2023

Environ. Sci. Technol.

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“…6g). 41 It will facilitate the entry of Zn 2+ into the body of the material to activate the zinc storage sites on the inner part of the material. 42 The fast Zn 2+ diffusion ability of the Cu In order to further study the effect of CDs on the cycling stability for Cu 2 O-CDs-20, the morphology and structure of the Cu 2 O-CDs-20 electrode were characterized aer 100 cycles at 100 mA h g −1 .…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Core–shell structures of Cu₂O constructed by carbon quantum dots as high-performance zinc-ion battery cathodes

Zhang,

Liu,

Wang

et al. 2023

J. Mater. Chem. A

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“…Scanning electron microscopy (SEM, JEOL, Japan) coupled with energy-dispersive X-ray spectroscopy (EDS, Oxford Instrument, UK), X-ray diffraction (XRD, Bruker D8 Advance, Germany), thermogravimetric-differential thermal analysis (TG-DTA, NETZSCH, Germany), Brunauer-Emmet-Teller (ThermoFisher, USA), Fourier transform infrared (FT-IR, Nicolet 6700, MA, USA), Raman spectroscopy (i-RamanPlus, B&W Tek Inc., USA), and X-ray photoelectron spectroscopy (XPS, ESCALAB Xi+, ThermoFischer, USA) were employed to characterize the morphology, structures, surface elements, and functional groups of the experienced PS. , The characterization results of the original PS were reported in our previous study, and a comparison with the experienced PS was further investigated. The carbonyl index (CI) was calculated from the FT-IR spectra using eq , and CI values for the PS were obtained by comparing the FT-IR absorption band at 1720 cm –1 with the reference band at 1451 cm –1 . normalCI = normalabsorption intensity at carbonyl groups .25em ( ∼ 1870 − 1650 cm − 1 ) normalabsorption intensity at constant internal band .25em ( ∼ 1500 − 1420 cm − 1 ) …”

Section: Methodsmentioning

confidence: 99%

Effects of Polystyrene Microplastics on Multiple Tetracycline Removals by Ferrate

Yao

Yang

2023

Ind. Eng. Chem. Res.

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Water treatment processes typically focus on eliminating organic pollutants in wastewater but often overlook the presence of coexisting microplastics. In this study, we examined the effects of polystyrene microplastics on removing three tetracyclines using ferrate. The presence of polystyrene microplastics influenced the efficiency of oxidation, adsorption, coagulation, and complexation, leading to varying degrees of tetracycline removal by ferrate. Our results showed that unaged polystyrene microplastics increased tetracycline removal by 29.2%, while three aged polystyrene microplastics showed an increased removal ratio, and ten soaked polystyrene microplastics inhibited tetracyclines removal by up to 41.6%. The breakdown of polystyrene microplastics also released small molecules and contributed to a 7.4% increase in total organic carbon. The carbonyl index of polystyrene microplastics also rose to 1.68, and specific functional groups, including C−O, C�O, Fe−O, and C−N−C, appeared on the surface. While polystyrene microplastics weakened the oxidation capacity of ferrate in removing tetracyclines, their increased surface area and pore volume aided in tetracyclines adsorption. Furthermore, polystyrene microplastics acted as support sites for Fe 3+ and Fe(OH) 3 , facilitating the formation of polystyrene-Fe-tetracycline complexes, which aided in tetracycline removal via complexation. Fe(OH) 3 helped with the adsorption and coagulation removal of tetracyclines. The potential adverse effects of polystyrene microplastics are widespread and require more attention in removing pollutants when microplastics coexist in aquatic environments.

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Interfacial catalytic and mass transfer mechanisms of an electro-peroxone process for selective removal of multiple fluoroquinolones

Cited by 34 publications

References 68 publications

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Core–shell structures of Cu₂O constructed by carbon quantum dots as high-performance zinc-ion battery cathodes

Effects of Polystyrene Microplastics on Multiple Tetracycline Removals by Ferrate

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Interfacial catalytic and mass transfer mechanisms of an electro-peroxone process for selective removal of multiple fluoroquinolones

Cited by 34 publications

References 68 publications

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Revisit the Role of Salinity in Heterogeneous Catalytic Ozonation: The Trade-Off between Reaction Inhibition and Mass Transfer Enhancement

Core–shell structures of Cu2O constructed by carbon quantum dots as high-performance zinc-ion battery cathodes

Effects of Polystyrene Microplastics on Multiple Tetracycline Removals by Ferrate

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Core–shell structures of Cu₂O constructed by carbon quantum dots as high-performance zinc-ion battery cathodes