title: Study on decomposition of indoor air contaminants by  pulsed atmospheric microplasma.
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.
authors.affiliation: Organization for Innovation and Social Collaboration, Shizuoka University, Nakaku, Hamamatsu, Japan. shimizu@cjr.shizuoka.ac.jp
authors.forename: Kazuo
authors.initials: K
authors.lastname: Shimizu
authors.forename: Tomoya
authors.initials: T
authors.lastname: Kuwabara
authors.forename: Marius
authors.initials: M
authors.lastname: Blajan