Pollutant Degradation in Gas Streams by means of Non-Thermal Plasmas

Schiorlin, Milko; Paradisi, Cristina; Brandenburg, Ronny; MichaelSchmidt,; Marotta, Ester; Giardina, Agata; Basner, R.

doi:10.5772/60049

Cited by 7 publications

(9 citation statements)

References 48 publications

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“…The formation of O and molecular nitrogen can be attributed to the reactions of energetic electrons or argon metastables with ambient air [57]. Many authors have reported that HO and O radicals are considered as one of the main short-lived ROS in the plasma discharge, and they can directly react with organic pollutants which lead to degradation [14,19,24,61].…”

Section: Solution Analysismentioning

confidence: 99%

Direct and Indirect Treatment of Organic Dye (Acid Blue 25) Solutions by Using Cold Atmospheric Plasma Jet

et al. 2022

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In this work, the direct and indirect removal of Acid Blue 25 (AB25) from water by using cold atmospheric pressure plasma jet (APPJ) has been demonstrated. APPJ with a pin electrode type configuration operating with argon as a working gas was used as a plasma source for treatments. In this configuration, argon plasma was formed in the contact with surrounding air over the liquid surface. The plasma was driven by using a high voltage radio frequency (RF) power supply. The system was characterized by the measurement of electrical characteristics and by employing optical emission spectroscopy (OES). The electrical characterization gave information about the voltages and currents, i.e., working points of the discharge, as well as power deposition to the sample. OES recorded the emission spectra and confirmed several existing reactive species in the gas phase of the plasma system. During the direct treatment, AB25-containing solution was directly exposed to APPJ. The direct treatment was performed by modifying various experimental parameters, such as initial AB25 concentrations, treatment times, and input powers. In the indirect treatment, AB25 was treated by using plasma activated water (PAW). The characterization of PAW was performed and various plasma-induced long-lived species, such as nitrate (NO3−), nitrite (NO2−) and hydrogen peroxide (H2O2) have been quantified using colorimetric techniques. Besides, blank experiments have been conducted with main constituents in PAW, where AB25 was treated individually by NO3−, NO2−, and H2O2 and with a mixture of these three species. As expected, with the direct treatment almost complete removal of AB25 was achieved. The measurements also provided an insight into the kinetics of the degradation of AB25. In the indirect treatment, PAW removed a significant amount of AB25 within 17 days. In the blank experiments, H2O2 containing solutions created a favourable influence on removal of AB25 from liquid.

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Section: Solution Analysismentioning

confidence: 99%

Direct and Indirect Treatment of Organic Dye (Acid Blue 25) Solutions by Using Cold Atmospheric Plasma Jet

et al. 2022

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“…Active species with high energy are then injected into the liquid phase to react with chlorophenol compounds. In the industry, DBD reactor is used to produce ozone, deodorize, surface treatment, and other processes (Schiorlin et al, 2015).…”

Section: Chlorophenols Contaminantsmentioning

confidence: 99%

Degradation Characteristics of Wastewater Containing 2-Chlorophenol and 4-Chlorophenol Compounds, Using a Dielectric Barrier Discharge (DBD) Cold Plasma Reactor

2021

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Wastes containing phenolic compounds, including 2-chlorophenol and 4-chlorophenol at a threshold exceeding 50 mg / L, are very harmful to the environment. The processing of waste containing phenolic compounds using ozone and plasma technology is therefore an environmentally friendly and relatively inexpensive solution. The processing carried out in this study uses ozone plasma technology. Plasma is generated by high voltage transformator, which is fed into electrodes wound on a reactor made of quartz glass. The reactor type is dielectric barrier discharge (DBD) have the ability to degrade these waste, by producing reactive oxygen species, including •OH, •O2and molecular species of O3, H2O2. Subsequently, active species with high energy are transferred to the liquid phase, to react with chlorophenol compounds. According to the results, the dielectric barrier discharge plasma reactor using electrode coils was able to degrade waste containing 2chlorophenol compounds by 70.96% and 79.41%, in acidic and alkaline conditions, respectively, while, 4-chlorophenol was degraded by 23.42% and 53.54%, in acidic and alkaline conditions, respectively.

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“…Toluene is widely used as feedstock in the chemical industry for synthesis of drugs, dyes, explosives,… and as a solvent (e.g. thinner, paints, adhesives 19,20 ). In addition, exposure to toluene is known to affect the central nervous system and may cause tiredness, confusion, weakness, memory loss and nausea.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, exposure to toluene is known to affect the central nervous system and may cause tiredness, confusion, weakness, memory loss and nausea. 9,19,20 Moreover, as toluene is water-insoluble, it cannot be scrubbed and should be eliminated from gas streams making use of alternative techniques. Based on its widespread use and its severe health impact, toluene has 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 4 therefore been chosen as model compound in the current study.…”

Section: Introductionmentioning

confidence: 99%

“…Toluene is widely used as feedstock in the chemical industry for synthesis of drugs, dyes, and explosives, etc. and as a solvent (e.g., thinner, paints, adhesives , ). In addition, exposure to toluene is known to affect the central nervous system and may cause tiredness, confusion, weakness, memory loss, and nausea. ,, Moreover, as toluene is water-insoluble, it cannot be scrubbed, and should be eliminated from gas streams making use of alternative techniques.…”

Section: Introductionmentioning

confidence: 99%

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An in-Depth Investigation of Toluene Decomposition with a Glass Beads-Packed Bed Dielectric Barrier Discharge Reactor

Veerapandian

Onyshchenko

et al. 2017

Ind. Eng. Chem. Res.

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A glass beads packed bed dielectric barrier discharge (DBD) reactor is used for the removal of low concentration toluene (330 ppm) in air. The influence of relative humidity (RH) of the air on the discharge characteristics, toluene removal efficiency and by-product formation is examined. Optical emission spectroscopy (OES) has showed that the amount of N 2 excited states decreases with increasing RH due to the increased quenching of these excited states. A toluene removal efficiency of 42±2% was obtained at an optimum RH of 40% at a specific input energy of approximately 250 J/L. The main products of the toluene decomposition process were identified as CO 2 , CO, N 2 O, O 3 (both dry and humid air) and HCOOH (dry air only). While 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 2 higher RH suppress the formation of formic acid, the highest CO and CO 2 yields, N 2 O and O 3 concentration at an RH of 40% confirm the observed highest removal efficiency at this experimental condition.

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Pollutant Degradation in Gas Streams by means of Non-Thermal Plasmas

Cited by 7 publications

References 48 publications

Direct and Indirect Treatment of Organic Dye (Acid Blue 25) Solutions by Using Cold Atmospheric Plasma Jet

Direct and Indirect Treatment of Organic Dye (Acid Blue 25) Solutions by Using Cold Atmospheric Plasma Jet

Degradation Characteristics of Wastewater Containing 2-Chlorophenol and 4-Chlorophenol Compounds, Using a Dielectric Barrier Discharge (DBD) Cold Plasma Reactor

An in-Depth Investigation of Toluene Decomposition with a Glass Beads-Packed Bed Dielectric Barrier Discharge Reactor

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