Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Sensors

Kazuo Shimizu¹  Tomoya Kuwabara² 

[1] Organization for Innovation and Social Collaboration, Shizuoka University, 3-5-1 Johoku, Nakaku, Hamamatsu 432-8561, Japan;

关键词: microplasma;    dielectric barrier discharge;    pulsed power;    air treatment;   

DOI  :  10.3390/s121114525

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.