Eur. Phys. J. D 60, 637-644 (2010)
https://doi.org/10.1140/epjd/e2010-00235-0

Gas chemical studies using corona discharge reactors

¹ ABsalut Ecology KG , Teisenbergstr. 7, 83395 Freilassing, Germany
² TUM International GmbH, Amalienstr. 71, 80799 München, Germany
³ Physik Department E12, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany

Corresponding author: ^a andreas.ulrich@ph.tum.de

Received: 25 May 2010
Revised: 2 August 2010
Published online: 14 September 2010

Abstract

Corona discharges with voltages up to 60 kV (DC) were studied with the aim to induce chemical reactions in flue gases at atmospheric pressure. Various plasma reactors with different geometries of multi-needle arrays were tested. The power input was optimised by studying the electrical parameters of the set-up systematically. Both, solid and liquid electrodes were used in combination with the needle arrays. A precise positioning of the corona needles allowed operation without a ballast resistor. Formation rates for CO and the sum of NO₂ and O₃ are reported and discussed. Three catalytic anode-coatings were tested for their potential to decompose carbon dioxide.