Publication detail

High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge

GROSSMANNOVÁ, H. CIGÁNEK, M. KRČMA, F.

Original Title

High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge

Type

journal article - other

Language

English

Original Abstract

We investigate the issue of applicability of the solid phase microextraction (SPME) in the analysis of volatile organic compounds (VOCs) destruction products in the gliding arc discharge. Our research is focused on the measurements with the simple one stage gliding arc reactor, applied voltage was varied in the range of 3.5 - 4 kV. As a carrier gas, the dry air and its mixtures with nitrogen and oxygen, enriched by toluene, with flow rate of 1000-3500 ml/min was used. Total decomposition of toluene of 97 % was achieved at the oxygen content in carrier gas of 60 %. For measurements with air as a carrier gas, the highest efficiency was 95 %. We also tested the SPME technique suitability for the quantitative analysis of exhausts gases and if this technique can be used efficiently in the field to extract by-products. Carbowax/divinylbenzene and Carboxen/polydimethylsiloxane/divinylbenzene fibers were chosen for sampling. Tens of various high-molecular substances were observed, especially a large number of oxygenous compounds and further several nitrogenous and C_xH_y compounds. The concentrations of various generated compounds strongly depend on the oxygen content in gas mixture composition. The results showed that the fiber coated by Carbowax/divinylbenzene can extract more products independently on the used VOC compound. The Carboxen/polydimethylsiloxane/divinylbenzene fiber is useful for the analysis of oxygenous compounds and its use will be recommended especially when the destruction is done in the oxygen rich atmosphere. With the higher ratio of oxygen in the carrier gas a distinctive decline of C_xH_y compounds amount have been observed. We also tried to describe the significant production of some compounds like benzyl alcohol, benzeneacetaldehyde, even in oxygen content is proximate 0 %. Experimental data demonstrated that it is necessary to use several SPME fibers for full-scale high-molecular products analysis.

Keywords

VOC degradation, SPME analysis, GlidArc

Authors

GROSSMANNOVÁ, H.; CIGÁNEK, M.; KRČMA, F.

RIV year

2007

Released

1. 6. 2007

Publisher

IOP

ISBN

1742-6596

Periodical

Journal of Physics: Conference Series

Year of study

63

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

012011

Pages to

12016

Pages count

6

BibTex

@article{BUT44282,
  author="Hana {Grossmannová} and Miroslav {Cigánek} and František {Krčma}",
  title="High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge",
  journal="Journal of Physics: Conference Series",
  year="2007",
  volume="63",
  number="1",
  pages="6",
  issn="1742-6596"
}