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Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma
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; in revised form: 19 October 2012 / Accepted: 22 October 2012 / Published: 29 October 2012
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
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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.
Shimizu K, Kuwabara T, Blajan M. Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma. Sensors. 2012; 12(11):14525-14536.
Shimizu, Kazuo; Kuwabara, Tomoya; Blajan, Marius. 2012. "Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma." Sensors 12, no. 11: 14525-14536.