Degradation of organic pollutants combining plasma discharges generated within soil with TiO2 and ZnO catalysts: Comparative analysis, optimization and mechanisms

Hatzisymeon, Maria; Daletou, Maria K.; Rassias, Gerasimos A.; Aggelopoulos, C.A.

doi:10.1016/j.seppur.2023.124119

Cited by 4 publications

(1 citation statement)

References 71 publications

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“…It consisted of (i) a DBD-based plasma bubble reactor driven by (ii) a nanosecond pulsed voltage delivered by a power supply (NPG-18/3500), (iii) a digital oscilloscope (Rigol MSO2302A) connected to voltage (Tektronix P6015A, 0-75 MHz) and current probes (Pearson electronics 2877, 300 Hz-200 MHz) for the discharge power calculation, (iv) an optical characterization arrangement, and (v) a feeding gas system. Details regarding the calculation of the power dissipated in the DBD-based plasma reactor can be found elsewhere [24].…”

Section: Experimental Setup Electrical Diagnostics and Treatment Cond...mentioning

confidence: 99%

Exploring the Synergistic Mechanisms of Nanopulsed Plasma Bubbles and Photocatalysts for Trimethoprim Degradation and Mineralization in Water

Tsokanas,

Aggelopoulos

2024

Nanomaterials

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In this study, the synergetic action of nanopulsed plasma bubbles (PBs) and photocatalysts for the degradation/mineralization of trimethoprim (TMP) in water was investigated. The effects of ZnO or TiO2 loading, plasma gas, and initial TMP concentration were evaluated. The physicochemical characterization of plasma-treated water, the quantification of plasma species, and the use of appropriate plasma species scavengers shed light on the plasma-catalytic mechanism. ZnO proved to be a superior catalyst compared to TiO2 when combined with plasma bubbles, mainly due to the increased production of ⋅OH and oxygen species resulting from the decomposition of O3. The air–PBs + ZnO system resulted in higher TMP degradation (i.e., 95% after 5 min of treatment) compared to the air–PBs + TiO2 system (i.e., 87%) and the PBs-alone process (83%). The plasma gas strongly influenced the process, with O2 resulting in the best performance and Ar being insufficient to drive the process. The synergy between air–PBs and ZnO was more profound (SF = 1.7), while ZnO also promoted the already high O2–plasma bubbles’ performance, resulting in a high TOC removal rate (i.e., 71%). The electrical energy per order in the PBs + ZnO system was very low, ranging from 0.23 to 0.46 kWh/m3, depending on the plasma gas and initial TMP concentration. The study provides valuable insights into the rapid and cost-effective degradation of emerging contaminants like TMP and the plasma-catalytic mechanism of antibiotics.

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Section: Experimental Setup Electrical Diagnostics and Treatment Cond...mentioning

confidence: 99%

Exploring the Synergistic Mechanisms of Nanopulsed Plasma Bubbles and Photocatalysts for Trimethoprim Degradation and Mineralization in Water

Tsokanas,

Aggelopoulos

2024

Nanomaterials

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Co-doped ZnO catalyst for non-thermal atmospheric pressure pulsating corona plasma degradation of reactive dye

Petrović,

Kostić,

Rančev

et al. 2024

Materials Chemistry and Physics

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Application of Human Stress Response Mechanism Model in the Evaluation of Ecological Restoration in Coal Mines

LI,

2024

J. Mech. Med. Biol.

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A mathematical model of the stress response mechanism was constructed based on the process and characteristics of human stress response. In this model, the propagation speed of human stress hormones, the time boundary of the stress response process, and the regulatory equation of stress response are provided. An analogy is made between human stress response and ecological restoration, which have intermediary and diffusion properties between influencing factors and outcomes. Based on the human stress response mechanism model, the weights of various indicators affecting the ecological restoration effect of coal mines were calculated, and a comparison of different restoration schemes was obtained. The evaluation process and results confirm the effectiveness of applying the human stress response mechanism model.

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Degradation of organic pollutants combining plasma discharges generated within soil with TiO2 and ZnO catalysts: Comparative analysis, optimization and mechanisms

Cited by 4 publications

References 71 publications

Exploring the Synergistic Mechanisms of Nanopulsed Plasma Bubbles and Photocatalysts for Trimethoprim Degradation and Mineralization in Water

Exploring the Synergistic Mechanisms of Nanopulsed Plasma Bubbles and Photocatalysts for Trimethoprim Degradation and Mineralization in Water

Co-doped ZnO catalyst for non-thermal atmospheric pressure pulsating corona plasma degradation of reactive dye

Application of Human Stress Response Mechanism Model in the Evaluation of Ecological Restoration in Coal Mines

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