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Sensors 2012, 12(11), 14525-14536; doi:10.3390/s121114525
Article

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

* ,
 and
Organization for Innovation and Social Collaboration, Shizuoka University, 3-5-1 Johoku, Nakaku, Hamamatsu 432-8561, Japan
* Author to whom correspondence should be addressed.
Received: 7 September 2012 / Revised: 19 October 2012 / Accepted: 22 October 2012 / Published: 29 October 2012
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Japan 2012)
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Abstract

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.
Keywords: microplasma; dielectric barrier discharge; pulsed power; air treatment microplasma; dielectric barrier discharge; pulsed power; air treatment
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Shimizu, K.; Kuwabara, T.; Blajan, M. Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma. Sensors 2012, 12, 14525-14536.

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