Air-Based Coaxial Dielectric Barrier Discharge Plasma Source for Pseudomonas aeruginosa Biofilm Eradication

Soler-Arango, Juliana; Xaubet, M.; Giuliani, L.; Grondona, D.; Brelles-Mariño, Graciela

doi:10.1615/plasmamed.2017020485

Cited by 6 publications

(8 citation statements)

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“…For the plasma generated in moistened air, the survival curve shows a double-slope kinetics with a D 1 of 1.14 ± 0.28 min for short exposure times, and a D 2 of 4.36 ± 0.63 min for longer exposure times. Taken together, these results demonstrate that moistened air inactivates biofilms more rapidly and efficiently than ambient air [21]. The better performance of a discharge generated in moistened air was attributed to the putative presence of RONS.…”

Section: Introductionmentioning

confidence: 63%

“…A detailed description of a DBD reactor operating at open atmosphere may be found elsewhere [21]. Figure 1a shows a schematic of this plasma source.…”

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

“…We have previously shown that an air-based DBD plasma source represents an affordable but still convenient option for biofilm eradication [21]. For this reason, in this work we have mainly focused our study on plasmas generated in air as a major component of the feed gas.…”

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

“…As described in our previous work, in all the cases where air was used for plasma generation, the electric discharge took place at the interelectrode region and consisted of a series of short-lived filamentary micro-discharges [21]. Typical waveforms of current and voltage applied to the inner electrode during the discharge showed the filamentary character of the discharge and also the existence of current peaks in the order of 10 mA with a negligible displacement current of * 0.01 mA superimposed.…”

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

“…Qualitative measurements of hydrogen peroxide (H 2 O 2 ), nitrate (NO 3 -), and nitrite (NO 2 -) generated in the plasma reactor were carried out with Peroxide (0.5-25 mg/L Mquant, Merck) and Nitrate/Nitrite (Macherey-Nagel) test strips. The strips were placed for one minute 4 mm away from the reactor outlet (the same distance plasma-sample used in [21]).…”

Section: Qualitative Determination Of Hydrogen Peroxide Nitrate and N...mentioning

confidence: 99%

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Characterization of an Air-Based Coaxial Dielectric Barrier Discharge Plasma Source for Biofilm Eradication

Soler-Arango

Brelles-Mariño

Rodero

et al. 2018

Plasma Chem Plasma Process

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Air-based atmospheric-pressure cold plasmas are a source of charged particles, excited species, radicals, and UV rays, known to induce degradation of biomaterials. In this work we characterize an air-based Dielectric Barrier Discharge plasma source designed for biofilm eradication, and study plasmas generated under different conditions by Optical Emission Spectroscopy. The main excited species in air-based plasmas are N 2 (C 3 P u ) molecules and the gas temperatures never exceed 335 K, decreasing as air amounts increase in the feeding gas. Excited oxygen atoms and OH species are only detected in discharges generated in argon-containing gases. The temperature of the effluent remains below 308 K. Air-based plasmas are useful for biofilm eradication as they produce high amounts of ozone at a low gas temperature.

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Section: Introductionmentioning

confidence: 63%

“…A detailed description of a DBD reactor operating at open atmosphere may be found elsewhere [21]. Figure 1a shows a schematic of this plasma source.…”

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

Section: Experimental Section Plasma Generationmentioning

confidence: 99%

Section: Qualitative Determination Of Hydrogen Peroxide Nitrate and N...mentioning

confidence: 99%

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