Materials degradation in non-thermal plasma generators by corona discharge

Cádiz, Mar Cogollo de; Arrabal, Adrián López; Lantada, Andrés Díaz; Aguirre, Miquel

doi:10.1038/s41598-021-03447-w

Cited by 13 publications

(8 citation statements)

References 32 publications

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“…In addition, it is need to point out that tungsten wire rather than stainless steel wire was chosen in the investigation due to its higher strength and durability. It was reported that the stainless steel wire is easy to break during the long term operation due to the erosion induced by discharge [38]. Actually the filtration efficiency of EES with stainless steel multi-wire array electrode was also measured(data was not shown) and its filtration efficiency of PM 0.3 ∼ 0.5 and PM 0.3 were still significantly higher than the other two discharge electrode structure at the same voltage.…”

Section: Discussionmentioning

confidence: 93%

The performance evaluation of pleated electret filters enhanced by electrostatic enhanced method

Wang

Dong

et al. 2023

Phys. Scr.

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The filtration efficiency deterioration over operating time due to exposure to particles, organic solvents and other factor is an obvious defect of electret filter, especially during the coronavirus pandemic. Electrostatic enhanced method has been proposed as a promising way to improve the filtration efficiency and service time of electret filters without increasing the pressure drop. In this work, the effect of discharge electrode structure and operation mode of the electrostatic enhanced structure(EES) on the filtration efficiency of commercial pleated electret filters were studied firstly, then the EES was installed in a special designed prototype air purifier, two key indicators of air purifiers(clean air delivery rate (CADR) and cumulate clean mass (CCM)) were tested to evaluate the actual performance improvement of electret filters by the electrostatic enhanced method. It was found that the discharge electrode structure had significant influence on the filtration efficiency and multi-wire array electrode was more suitable for the discharge electrode to pleated filter to ground mesh structure used in this paper. The decayed electrostatic charges of pleated electret filter cannot be recharged again through the EES in actual operation condition. The filtration efficiency improvement of the test pleated electret filters was dominantly contributed by particle charging. The filter polarizing induced by the external electric field was helpful in increasing the filtration efficiency when the particles were charged while its effect on uncharged particles was almost negligible. Besides, the actual performance of the prototype air purifier indicated that the EES can alleviate the filtration efficiency deterioration of test electret filters and extend the service life of H11 and H13 filters by more than 3 and 1.5 times respectively according to the CCM test results.

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Section: Discussionmentioning

confidence: 93%

The performance evaluation of pleated electret filters enhanced by electrostatic enhanced method

Wang

Dong

et al. 2023

Phys. Scr.

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“…The main disadvantages of using the corona discharge method are corrosion, degradation, and fatigue behavior of the electrode, which can affect the performance of the processes negatively. Cádiz et al [ 70 ] studied the degradation of corona electrodes. They showed that the surface of the electrode is destroyed after a short time of use regardless of the material from which it is made.…”

Section: Types Of Plasma Reactorsmentioning

confidence: 99%

Green Hydrogen Production through Ammonia Decomposition Using Non-Thermal Plasma

Moszczyńska,

Liu,

Wiśniewski

2023

IJMS

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Liquid hydrogen carriers will soon play a significant role in transporting energy. The key factors that are considered when assessing the applicability of ammonia cracking in large-scale projects are as follows: high energy density, easy storage and distribution, the simplicity of the overall process, and a low or zero-carbon footprint. Thermal systems used for recovering H2 from ammonia require a reaction unit and catalyst that operates at a high temperature (550–800 °C) for the complete conversion of ammonia, which has a negative effect on the economics of the process. A non-thermal plasma (NTP) solution is the answer to this problem. Ammonia becomes a reliable hydrogen carrier and, in combination with NTP, offers the high conversion of the dehydrogenation process at a relatively low temperature so that zero-carbon pure hydrogen can be transported over long distances. This paper provides a critical overview of ammonia decomposition systems that focus on non-thermal methods, especially under plasma conditions. The review shows that the process has various positive aspects and is an innovative process that has only been reported to a limited extent.

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“…The corona phenomenon is a nonthermal plasma generation system that is distinguished from others by being easily achievable and controllable through the modification of design and performance parameters. [2][3][4][5] Many research studies have been conducted on developing electrode configurations for industrial applications, including wire-to-plane, wire-to-cylinder, point-to-grid, and blade-to-plane fins. [5][6][7][8][9] The high energy produced is transformed on the one hand into kinetic energy, causing the ionic wind, and on the other hand into chemical energy.…”

Section: Introductionmentioning

confidence: 99%

“…One of the main advantages of this technology is that it can be easily produced from air and electricity, providing a lower‐cost disinfection solution without the expense and logistics of maintaining it. The maintenance of the EHD devices could be estimated based on the results obtained by Cogollo de Cádiz et al [ 4 ] who studied the behavior of different materials for the corona.…”

Section: Introductionmentioning

confidence: 99%

Electrohydrodynamic devices for ionic wind generation and airborne positive‐strand RNA viruses inactivation by nonthermal atmospheric plasma

Ruiz‐Trujillo,

Vega‐Martínez,

Esparza

et al. 2023

Plasma Processes & Polymers

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Adaptable technologies capable of reducing contaminants in enclosed spaces are needed. The SARS‐CoV‐2 pandemic has highlighted the vulnerability of current systems forcing the adoption of extreme measures, causing a significant socioeconomic impact. Electrohydrodynamic devices are proposed as a competitive solution that allows obtaining a high degree of viral inactivation with a very low generation of chemical compounds and low power consumption, together with the production of an airflow, which makes its implementation in real environments easy. In this study, airborne positive‐strand RNA viruses are treated with nonthermal atmospheric plasma, achieving >3.4‐logR for HCoV‐229E and Bacteriophage‐MS2 and >2.4‐log SARS‐CoV‐2 at 4W, in a single pass, at O3 and NO2 concentrations ≤0.70 ppm. Electrical, fluid‐dynamic, and chemical characterization provides the design rules.

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Materials degradation in non-thermal plasma generators by corona discharge

Cited by 13 publications

References 32 publications

The performance evaluation of pleated electret filters enhanced by electrostatic enhanced method

The performance evaluation of pleated electret filters enhanced by electrostatic enhanced method

Green Hydrogen Production through Ammonia Decomposition Using Non-Thermal Plasma

Electrohydrodynamic devices for ionic wind generation and airborne positive‐strand RNA viruses inactivation by nonthermal atmospheric plasma

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