Comparative Study of the Performance of Nine Filters Utilized in Filtration of Aerosols by Bubbling

• Published in: Aerosol science and technology Vol. 35; no. 4; pp. 852 - 859
• Main Authors: Agranovski, I.E., Braddock, R. D., Myojo, T.
• Format: Journal Article
• Language: English
• Published: London Taylor & Francis Group 2001; Taylor & Francis
• Subjects: Applied sciences; Atmospheric pollution; Exact sciences and technology; General processes of purification and dust removal; Pollution; Prevention and purification methods; Performance evaluation; Dust removal; Suspended particle; Air filter; Purification; Porous medium; Immersion techniques; Polydispersed aerosol; Air cleaning systems
• ISSN: 0278-6826; 1521-7388
• DOI: 10.1080/027868201753227415

A new process of air purification has been developed and studied experimentally (Agranovski et al. 1999). This process is based on passing air through a filter immersed in liquid. It leads to the formation of bubbles within the filter as the carrier gas passes through and thus provides alternate mechanisms for the removal of aerosols. It was identified (Agranovski et al. 1999) that for relatively large particles (0.3-2.7 w m) the efficiency of the filter utilized in wet filtration is higher than for dry filtration. In the current paper, experiments are described that investigate the performance of the technology for particles in the size range of 0.03 to 2.7 w m, to identify the importance of an alternative mechanism of purification (diffusion). Also, 9 different filters were employed to compare the efficiencies of the wet and dry filtration for different applications of the technology.