Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Non-thermal plasma can produce reactive species such as O, O3 and OH toinduce dye degradation in water. Many chemical reactions are known to occur at the plasma-water interface, but contributions from each reactive species for the degradation are still not clear. This research investigated the discoloration ofmethylene blue using a specially-configured dielectric barrier discharge reactor, where the plasma was injected into the methylene blue solution through micro-holes to initiate the oxidation reactions at different pH values of 2.9, 7.1 and 11. The degradation effects from hydroxyls and ozone were determined separately by using the radical scavenger Tert-butanol. The results demonstratethat methylene blue is degraded by both ozone and reactive hydroxyl radicals,with the latter contributing up to 30% of the discoloration effect depending onsolution pH values. The yield of plasma-produced hydroxyl radicalsup to 4.6 g/kWh was achieved and the efficiency was not affected by solution pH values; the corresponding methylene blue degradation efficiency is 184 g/kWh.
LanguageEnglish
Title of host publicationProceedings of the 20th International Conference on Gas Discharges and their Applications
Pages566-569
Number of pages4
Publication statusPublished - 2014
Event20th International Conference on Gas Discharges and their Applications - Toulouse, France
Duration: 6 Jul 201411 Jul 2014

Conference

Conference20th International Conference on Gas Discharges and their Applications
CountryFrance
CityToulouse
Period6/07/1411/07/14

Fingerprint

Plasmas
Degradation
Discoloration
Ozone
Butenes
Water
Chemical reactions
Dyes
Oxidation

Keywords

  • methylene blue
  • dye degredation
  • plasma-water interface
  • oxidation

Cite this

Zhao, Y. Y., Wang, T., MacGregor, S. J., Wilson, M. P., Given, M. J., & Timoshkin, I. V. (2014). Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge. In Proceedings of the 20th International Conference on Gas Discharges and their Applications (pp. 566-569)
Zhao, Y. Y. ; Wang, T. ; MacGregor, S. J. ; Wilson, M. P. ; Given, M. J. ; Timoshkin, I. V. / Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge. Proceedings of the 20th International Conference on Gas Discharges and their Applications. 2014. pp. 566-569
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title = "Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge",
abstract = "Non-thermal plasma can produce reactive species such as O, O3 and OH toinduce dye degradation in water. Many chemical reactions are known to occur at the plasma-water interface, but contributions from each reactive species for the degradation are still not clear. This research investigated the discoloration ofmethylene blue using a specially-configured dielectric barrier discharge reactor, where the plasma was injected into the methylene blue solution through micro-holes to initiate the oxidation reactions at different pH values of 2.9, 7.1 and 11. The degradation effects from hydroxyls and ozone were determined separately by using the radical scavenger Tert-butanol. The results demonstratethat methylene blue is degraded by both ozone and reactive hydroxyl radicals,with the latter contributing up to 30{\%} of the discoloration effect depending onsolution pH values. The yield of plasma-produced hydroxyl radicalsup to 4.6 g/kWh was achieved and the efficiency was not affected by solution pH values; the corresponding methylene blue degradation efficiency is 184 g/kWh.",
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Zhao, YY, Wang, T, MacGregor, SJ, Wilson, MP, Given, MJ & Timoshkin, IV 2014, Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge. in Proceedings of the 20th International Conference on Gas Discharges and their Applications. pp. 566-569, 20th International Conference on Gas Discharges and their Applications, Toulouse, France, 6/07/14.

Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge. / Zhao, Y. Y.; Wang, T.; MacGregor, S. J.; Wilson, M. P.; Given, M. J.; Timoshkin, I. V.

Proceedings of the 20th International Conference on Gas Discharges and their Applications. 2014. p. 566-569.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge

AU - Zhao, Y. Y.

AU - Wang, T.

AU - MacGregor, S. J.

AU - Wilson, M. P.

AU - Given, M. J.

AU - Timoshkin, I. V.

PY - 2014

Y1 - 2014

N2 - Non-thermal plasma can produce reactive species such as O, O3 and OH toinduce dye degradation in water. Many chemical reactions are known to occur at the plasma-water interface, but contributions from each reactive species for the degradation are still not clear. This research investigated the discoloration ofmethylene blue using a specially-configured dielectric barrier discharge reactor, where the plasma was injected into the methylene blue solution through micro-holes to initiate the oxidation reactions at different pH values of 2.9, 7.1 and 11. The degradation effects from hydroxyls and ozone were determined separately by using the radical scavenger Tert-butanol. The results demonstratethat methylene blue is degraded by both ozone and reactive hydroxyl radicals,with the latter contributing up to 30% of the discoloration effect depending onsolution pH values. The yield of plasma-produced hydroxyl radicalsup to 4.6 g/kWh was achieved and the efficiency was not affected by solution pH values; the corresponding methylene blue degradation efficiency is 184 g/kWh.

AB - Non-thermal plasma can produce reactive species such as O, O3 and OH toinduce dye degradation in water. Many chemical reactions are known to occur at the plasma-water interface, but contributions from each reactive species for the degradation are still not clear. This research investigated the discoloration ofmethylene blue using a specially-configured dielectric barrier discharge reactor, where the plasma was injected into the methylene blue solution through micro-holes to initiate the oxidation reactions at different pH values of 2.9, 7.1 and 11. The degradation effects from hydroxyls and ozone were determined separately by using the radical scavenger Tert-butanol. The results demonstratethat methylene blue is degraded by both ozone and reactive hydroxyl radicals,with the latter contributing up to 30% of the discoloration effect depending onsolution pH values. The yield of plasma-produced hydroxyl radicalsup to 4.6 g/kWh was achieved and the efficiency was not affected by solution pH values; the corresponding methylene blue degradation efficiency is 184 g/kWh.

KW - methylene blue

KW - dye degredation

KW - plasma-water interface

KW - oxidation

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M3 - Conference contribution book

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Zhao YY, Wang T, MacGregor SJ, Wilson MP, Given MJ, Timoshkin IV. Investigation of plasma-induced methylene blue degradation using dielectric barrier discharge. In Proceedings of the 20th International Conference on Gas Discharges and their Applications. 2014. p. 566-569