Publication detail

Comparison of liquid and liquid-gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products

KOZÁKOVÁ, Z. KLÍMOVÁ, E. OBRADOVIC, B M DOJCINOVIC, B P KRČMA, F. KURAICA, M M OLEJNÍČKOVÁ, Z SÝKORA, R. VÁVROVÁ, M.

Original Title

Comparison of liquid and liquid-gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products

English Title

Comparison of liquid and liquid-gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products

Type

journal article in Web of Science

Language

en

Original Abstract

Three plasma systems are used for decomposition of two organic textile dyes. The highest discoloration efficiency over 90% is reached in the water falling film DBD when maximal energy of 270 and 450kJL(-1) is applied into Reactive Yellow 125 and Direct Red 79 dye solutions, respectively. Decomposition of the dye molecules is confirmed by concentration decreases in dye chromatograms. Similar degradation products are identified in the positive diaphragm discharge and water falling film DBD. In the negative diaphragm discharge, different products are formed due to electrochemical reactions on the anode. Substitution of halogens, hydrogen addition on the azo group and the cleavage of the azo group itself are the main mechanisms contributing to the destruction of the dye molecule in the compared plasma systems.

English abstract

Three plasma systems are used for decomposition of two organic textile dyes. The highest discoloration efficiency over 90% is reached in the water falling film DBD when maximal energy of 270 and 450kJL(-1) is applied into Reactive Yellow 125 and Direct Red 79 dye solutions, respectively. Decomposition of the dye molecules is confirmed by concentration decreases in dye chromatograms. Similar degradation products are identified in the positive diaphragm discharge and water falling film DBD. In the negative diaphragm discharge, different products are formed due to electrochemical reactions on the anode. Substitution of halogens, hydrogen addition on the azo group and the cleavage of the azo group itself are the main mechanisms contributing to the destruction of the dye molecule in the compared plasma systems.

Keywords

azo textile dyes; DC discharges; dielectric barrier discharges; discoloration; HPLC-MS analyses

Released

04.06.2018

Pages from

1700178-1

Pages to

1700178-13

Pages count

13

URL

BibTex


@article{BUT149176,
  author="Zdenka {Kozáková} and Edita {Klímová} and František {Krčma} and Richard {Sýkora} and Milada {Vávrová}",
  title="Comparison of liquid and liquid-gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products",
  annote="Three plasma systems are used for decomposition of two organic textile dyes. The highest discoloration efficiency over 90% is reached in the water falling film DBD when maximal energy of 270 and 450kJL(-1) is applied into Reactive Yellow 125 and Direct Red 79 dye solutions, respectively. Decomposition of the dye molecules is confirmed by concentration decreases in dye chromatograms. Similar degradation products are identified in the positive diaphragm discharge and water falling film DBD. In the negative diaphragm discharge, different products are formed due to electrochemical reactions on the anode. Substitution of halogens, hydrogen addition on the azo group and the cleavage of the azo group itself are the main mechanisms contributing to the destruction of the dye molecule in the compared plasma systems.",
  chapter="149176",
  doi="10.1002/ppap.201700178",
  howpublished="print",
  number="6",
  volume="15",
  year="2018",
  month="june",
  pages="1700178-1--1700178-13",
  type="journal article in Web of Science"
}