%0 Journal Article
%T Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma
%A Kazuo Shimizu
%A Tomoya Kuwabara
%A Marius Blajan
%J Sensors
%D 2012
%I MDPI AG
%R 10.3390/s121114525
%X Decomposition of formaldehyde (HCHO) by a microplasma reactor in order to improve Indoor Air Quality (IAQ) was achieved. HCHO was removed from air using one pass through reactor treatment (5 L/min). From an initial concentration of HCHO of 0.7 ppm about 96% was removed in one pass treatment using a discharge power of 0.3 W provided by a high voltage amplifier and a Marx Generator with MOSFET switches as pulsed power supplies. Moreover microplasma driven by the Marx Generator did not generate NOx as detected by a chemiluminescence NOx analyzer. In the case of large volume treatment the removal ratio of HCHO (initial concentration: 0.5 ppm) after 60 minutes was 51% at 1.2 kV when using HV amplifier considering also a 41% natural decay ratio of HCHO. The removal ratio was 54% at 1.2 kV when a Marx Generator energized the electrodes with a 44% natural decay ratio after 60 minutes of treatment.
%K microplasma
%K dielectric barrier discharge
%K pulsed power
%K air treatment
%U http://www.mdpi.com/1424-8220/12/11/14525