Publication detail

Water Treatment by DC Diaphragm Discharge

STARÁ, Z. PROCHÁZKOVÁ, J. KRČMA, F.

Original Title

Water Treatment by DC Diaphragm Discharge

English Title

Water Treatment by DC Diaphragm Discharge

Type

conference paper

Language

en

Original Abstract

Electrical discharges generated in liquid phase are commonly used for the removal of various organic compounds from water. This contribution presents results obtained from the investigation of the diaphragm discharge created by the application of DC non-pulsed high voltage up to 2 kV. Water solutions containing selected organic dyes and some additives such as electrolytes were treated by the discharge and destruction of organic molecules was studied. Spectroscopic methods, particularly absorption and optical emission spectroscopy were used for determination of dye concentration and plasma diagnostics. Influence of discharge conditions and solution properties on the dye removal was investigated. The diaphragm discharge is created in a small pin-hole in the dielectric diaphragm which is placed between two high voltage electrodes. When the DC voltage is used plasma streamers propagated from the hole towards each side electrode differ especially in their propagation velocity and energy distribution. Due to this phenomenon, processes occurring in the solution on each side of the diaphragm also run in different velocity. The work compares the dye decomposition on both sides of the diaphragm, as well as the dependence of the dye destruction on initial solution conductivity and power supplied to the reactor. Influence of iron and selected electrolytes added to the dye solution on the dye removal was studied, too.

English abstract

Electrical discharges generated in liquid phase are commonly used for the removal of various organic compounds from water. This contribution presents results obtained from the investigation of the diaphragm discharge created by the application of DC non-pulsed high voltage up to 2 kV. Water solutions containing selected organic dyes and some additives such as electrolytes were treated by the discharge and destruction of organic molecules was studied. Spectroscopic methods, particularly absorption and optical emission spectroscopy were used for determination of dye concentration and plasma diagnostics. Influence of discharge conditions and solution properties on the dye removal was investigated. The diaphragm discharge is created in a small pin-hole in the dielectric diaphragm which is placed between two high voltage electrodes. When the DC voltage is used plasma streamers propagated from the hole towards each side electrode differ especially in their propagation velocity and energy distribution. Due to this phenomenon, processes occurring in the solution on each side of the diaphragm also run in different velocity. The work compares the dye decomposition on both sides of the diaphragm, as well as the dependence of the dye destruction on initial solution conductivity and power supplied to the reactor. Influence of iron and selected electrolytes added to the dye solution on the dye removal was studied, too.

Keywords

diaphragm discharge, water treatment, dye decomposition

RIV year

2006

Released

06.12.2006

Publisher

FCH VUT

Location

Brno

ISBN

80-214-3320-5

Book

The Seventh European Meeting on Environmental Chemistry, EMEC7, Book of Abstracts

Pages from

139

Pages to

139

Pages count

1

BibTex


@inproceedings{BUT22133,
  author="Zdenka {Kozáková} and Jana {Procházková} and František {Krčma}",
  title="Water Treatment by DC Diaphragm Discharge",
  annote="Electrical discharges generated in liquid phase are commonly used for the removal of various organic compounds from water. This contribution presents results obtained from the investigation of the diaphragm discharge created by the application of DC non-pulsed high voltage up to 2 kV. Water solutions containing selected organic dyes and some additives such as electrolytes were treated by the discharge and destruction of organic molecules was studied. Spectroscopic methods, particularly absorption and optical emission spectroscopy were used for determination of dye concentration and plasma diagnostics. Influence of discharge conditions and solution properties on the dye removal was investigated.
The diaphragm discharge is created in a small pin-hole in the dielectric diaphragm which is placed between two high voltage electrodes. When the DC voltage is used plasma streamers propagated from the hole towards each side electrode differ especially in their propagation velocity and energy distribution. Due to this phenomenon, processes occurring in the solution on each side of the diaphragm also run in different velocity. The work compares the dye decomposition on both sides of the diaphragm, as well as the dependence of the dye destruction on initial solution conductivity and power supplied to the reactor. Influence of iron and selected electrolytes added to the dye solution on the dye removal was studied, too.",
  address="FCH VUT",
  booktitle="The Seventh European Meeting on Environmental Chemistry, EMEC7, Book of Abstracts",
  chapter="22133",
  institution="FCH VUT",
  journal="Nezařazené články",
  year="2006",
  month="december",
  pages="139--139",
  publisher="FCH VUT",
  type="conference paper"
}