Effects of polypropylene microplastics on multiple sulfonamide removals by the Fenton process

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

doi:10.1016/j.ces.2023.118779

Cited by 5 publications

(4 citation statements)

References 59 publications

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“…Previous studies have suggested that HO• can potentially degrade MPs. 5,16,17 Analysis in Table S1 highlighted slight differences in velocity, turbulent kinetic energy, dissipation rate, and pressure distribution with MPs, indicating their minor influence on hydrodynamic parameters but significant impact on HO• diffusion. Overall, the presence of MPs reduced the HO• concentration between electrodes, thereby affecting the oxidative efficiency of the flow-through EP process.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…MPs can act as carriers and adsorbents, potentially causing secondary pollution or altering the physicochemical properties of the reaction medium, which can affect the degradation rate of pollutants and the formation of byproducts in AOPs. 16,17 This oversight prevents an accurate portrayal of organic pollutant removal under different AOPs, highlighting the need to investigate the effects and mechanisms of MPs on the removal of organic pollutants using typical AOPs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Aquatic environments are the primary repositories for a diverse array of contaminants, and the coexistence of organic pollutants and MPs is increasingly problematic, leading to the formation of composite pollutants. ,− Current research on advanced oxidation processes (AOPs) predominantly focuses on removing individual organic pollutants, − often neglecting the simultaneous presence of MPs. MPs can act as carriers and adsorbents, potentially causing secondary pollution or altering the physicochemical properties of the reaction medium, which can affect the degradation rate of pollutants and the formation of byproducts in AOPs. , This oversight prevents an accurate portrayal of organic pollutant removal under different AOPs, highlighting the need to investigate the effects and mechanisms of MPs on the removal of organic pollutants using typical AOPs.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous studies, , we explored the interplay between MPs and the removal of multiple sulfonamide and tetracycline antibiotics through the Fenton process and ferrate treatment. We identified the mechanisms of free radical capture and pollutant adsorption by MPs.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Yao,

Li,

Qiu

et al. 2024

ACS EST Water

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Current research on advanced oxidation processes often focuses on removing individual organic contaminants, sometimes overlooking the impact of microplastics (MPs) on mass transfer. Real-time and precise monitoring through experimental measurements is challenging. In this study, we used computational fluid dynamics simulations to examine the effect of MPs on mass transfer in a flow-through electro-peroxone process. Our findings revealed that MPs decreased the concentration of hydroxyl radicals at the electrochemical cathode/solution interface. However, there was no significant impact on the concentrations and diffusion pathways of O 3 in the inlet gas phase and hydrogen peroxide on the electrochemical cathode surface. Additionally, the average size of MPs increased from 135.0 to 750.0 μm, and their count rose from 7474 to 10,924 particles/L. This was accompanied by increases in average turbulent kinetic energy and turbulent dissipation rate by 0.027 and 0.018 km 2 /s 2 , and 0.041 and 0.702 m 2 /s 3 , respectively. These changes suggested that the enlargement and increased count of MPs hindered liquid flow, reducing the efficiency of converting gaseous O 3 to aqueous O 3 . Consequently, this diminished the removal efficiency of pollutants in the electro-peroxone process. These insights are crucial for developing more efficient advanced oxidation processes for the simultaneous removal of MPs and pollutants.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Yao,

Li,

Qiu

et al. 2024

ACS EST Water

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Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Yao

et al. 2023

Applied Organom Chemis

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The Fe 2+ -activated persulfate and H 2 O 2 (Fe 2+ /persulfate/H 2 O 2 ) system achieved 94% removal of four mixed sulfonamides with 300-s treatment and possessed excellent complementarity and stability over a wide pH (3-11) and temperature (5-65 C) range. The quenching and electron spin resonance spectroscopy results confirmed the coexistence of sulfate radicals and hydroxyl radicals in the coupled system, which were responsible for the elimination of sulfonamides under ambient conditions. The reaction rate constants of sulfate radicals and hydroxyl radicals at possible reactive sites distinguished the difference in removal ratios of four sulfonamides, according to experimental determination and density functional theory calculations. The removal ratio of sulfathiazole was higher than others because its calculated reaction rate constants of sulfate radicals and hydroxyl radicals were higher than those of sulfamerazine, sulfamethoxazole, and sulfamethazine. The finding provided a reference for investigating the removal mechanism of mixed organic pollutants in the presence of multiple free radicals.

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Facile synthesis of Zn/Co LDH for the removal of oxytetracycline from wastewater: Experimental and DFT-Based analysis

Mutahir,

Akram,

Asim Khan

et al. 2024

Chemical Engineering Science

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Effects of polypropylene microplastics on multiple sulfonamide removals by the Fenton process

Cited by 5 publications

References 59 publications

Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Facile synthesis of Zn/Co LDH for the removal of oxytetracycline from wastewater: Experimental and DFT-Based analysis

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Effects of polypropylene microplastics on multiple sulfonamide removals by the Fenton process

Cited by 5 publications

References 59 publications

Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Effect of Microplastics on the Flow-Through Electro-Peroxone Process: A Computational Fluid Dynamics Simulation

Complementarity and action mechanisms of Fe2+‐activated persulfate and H2O2 system

Facile synthesis of Zn/Co LDH for the removal of oxytetracycline from wastewater: Experimental and DFT-Based analysis

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Product

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Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system