TY  - JOUR
T1  - Investigation of particle collection efficiency and ozone generation in AC and DC single-magnetic fluid filter toward a high performance air purifier with selective ozone generation
A1  - Asaka, Yusuke
A1  - Ueno, Tsubasa
A1  - Kuwahara, Akuya
Y1  - 2025///
KW  - Magnetic fluid
KW  - electrostatic precipitator (ESP)
KW  - liquid electrode
KW  - air purification
JF  - International Journal of Plasma Environmental Science and Technology
VL  - 19
IS  - 2
SP  - e02010
EP  - e02010
DO  - https://doi.org/10.34343/ijpest.2025.19.e02010
UR  - http://ijpest.com/Contents/19/2/e02010.html
N2  - Air pollution, primarily caused by aerosols containing particulate matter (PM), is a significant global concern. To mitigate this issue, high-efficiency particulate air (HEPA) filters and electrostatic precipitators are commonly used due to their high collection efficiency. Aerosols encompass substances such as yellow dust, pollen, and PMs generated during fuel combustion. However, carbon-based combustion PMs, which possess high electrical conductivity, are difficult to collect using electrostatic precipitators due to re-entrainment. This challenge underscores the need for a high-performance airpurifying device capable of efficiently collecting various fine PMs while maintaining low pressure loss and a high collection rate. To address this, a single magnetic fluid (MF) filter has been developed. The MF filter employs magnetic fluid as the collecting electrode and utilizes electrostatic forces, Brownian diffusion, inertial forces, and gravity to collect PMs. Its design prevents the re-entrainment of carbon-based PMs due to the surface tension properties of the MF. This paper details the collection principle of the MF filter, the evaluation method for determining the PM collection rate using high-voltage DC and AC power and experimentally clarifies the PM collection mechanism and performance of the MF filter.
ER  -