Glow Discharge Plasma Induced Dechlorination and Decomposition of Dichloromethane in an Aqueous Solution

Wang, Lei; Liu, Panliang; Chen, Tianxiang

doi:10.1007/s11090-015-9658-1

Cited by 10 publications

(7 citation statements)

References 24 publications

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“…Electrical breakdown of water can be realized by using non‐uniform electrode configuration with tens of kilovolts of applied voltage in pulsed corona discharges . However, an average of 1.0 kV is enough for initiation of RFD, which helps improve the operation safety (it is noted that contact glow discharge can be formed at voltage of hundreds of volts on the surface of solution, however this kind of discharge needs to operate at highly conductive solutions) . As shown in Figure b, the voltage waveform shows a sine‐like structure.…”

Section: Resultsmentioning

confidence: 99%

“…Similar to other electrical discharge processes, oxidizing and reducing species were equally generated in RFD . However, earlier studies of RFD were mainly focused on utilizing of • OH radicals to decolorize the organic dyes.…”

Section: Introductionmentioning

confidence: 97%

“…However, earlier studies of RFD were mainly focused on utilizing of • OH radicals to decolorize the organic dyes. The effects of reducing species on pollutant degradation were seldom reported . In the present work, RFD was employed to decompose MNZ in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of metronidazole by radio frequency discharge in an aqueous solution

Wang

Lin

et al. 2017

Plasma Processes & Polymers

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Degradation of metronidazole (MNZ) by radio frequency discharge in water was examined. Results showed that • OH, H • , and • O were produced. Decay of MNZ followed pseudo-first order kinetics, where the apparent rate constant was independent of its initial concentration in the range 0-0.5 mM, decreased in the range 0.5-1.0 mM, and leveled off in the range higher than 1.0 mM. pH had no effects on MNZ degradation. • OH scavengers enhanced the MNZ removal. Formic acid, nitrite ion, oxalic acid, nitrate ion, and acetic acid were determined as the primary intermediate byproducts. The eventual products were ammonia and inorganic carbon. Both • OH and H • participated in the MNZ degradation. H • played more efficient role than • OH in the early stage.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Degradation of metronidazole by radio frequency discharge in an aqueous solution

Wang

Lin

et al. 2017

Plasma Processes & Polymers

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“…Therefore, to convert such waste products into nontoxic inorganic materials or commercially valuable products, plasma processing is a promising approach. [ 9–13 ]…”

Section: Introductionmentioning

confidence: 99%

Condensation of chloromethanes and their binary systems with triphenylphosphine induced by low‐voltage discharges

Bodrikov

Titov

Subbotin

et al. 2020

Plasma Processes & Polymers

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Solid structures of different shapes, hydrogen chloride, and a small number of liquid products are formed from chloromethanes (CH2Cl2 and CHCl3) and binary systems with triphenylphosphine (CH2Cl2 + PPh3, CHCl3 + PPh3, and CCl4 + PPh3) under the action of a liquid‐phase low‐voltage discharge (60‐V DC). It is observed that triphenylphosphine additives sharply increase the reactivity of CCl4. Besides, a quantum chemical simulation of chloromethane transformation mechanism in the binary systems with triphenylphosphine is conducted, together with the likely mechanism of chloromethane conversion into active particles under the action of a liquid‐phase low‐voltage pulsed discharge.

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“…These highly activated species can diffuse into the solution to oxidize the organic molecules in water. The mechanism in the production of plasma has been studied [22][23][24][25]. GDP could degrade most organic molecules to the production of CO 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%

Glow Discharge Plasma Efficiently Degrades T-2 Toxin in Aqueous Solution and Patulin in Apple Juice

Liu¹,

Bi²,

Long³

et al. 2017

Adv Tech Biol Med

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The degradation of T-2 toxin in aqueous solution and patulin in apple juice at different conditions by glow discharge plasma (GDP) was investigated. High performance liquid chromatograph (HLPC) was used to analyze the toxins concentration which was changed by treatment time. The results showed that GDP treatment could rapidly and effectively degrade T-2 toxin in aqueous solution and patulin in apple juice. The higher the initial toxin concentrations, the higher treatment efficiency could be achieved within the same time. The degradation rates of T-2 toxin at any different initial concentration were all up to 30% after 8 min, whilst no T-2 toxin was detected after 40 min. The toxin removal rate was faster at a relatively higher acidity and alkalinity levels. The Fe 2+ and H 2 O 2 exhibited strong catalysis ability to the degradation reactions. The values of pH in the degraded solution were decreased rapidly due to the formation of carboxylic acids. Afterwards, the values were increased as carboxylic acids were decomposed into CO 2 and H 2 O. The dynamics equation curve is most appropriate and confirms that the degradation reaction of T-2 toxin by GDP belonged to the first order kinetics reaction, which could be expressed as ln (C 0 /C t )=kt. Quality evaluation of the apple juice indicated that GDP treatment within 10 min had little effects on quality of apple juice.

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Glow Discharge Plasma Induced Dechlorination and Decomposition of Dichloromethane in an Aqueous Solution

Cited by 10 publications

References 24 publications

Degradation of metronidazole by radio frequency discharge in an aqueous solution

Degradation of metronidazole by radio frequency discharge in an aqueous solution

Condensation of chloromethanes and their binary systems with triphenylphosphine induced by low‐voltage discharges

Glow Discharge Plasma Efficiently Degrades T-2 Toxin in Aqueous Solution and Patulin in Apple Juice

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