Abstract
ABSTRACT This study investigated the magnetic capture of fine dust containing iron compounds using a metal mesh. Test filters were prepared by magnetizing stainless woven mesh with permanent magnetic bars. The iron content of the test dust was 8.66%, 25.24%, and 12% for fly ash from a coal-fired power plant, effluent dust from a metro subway, and particulate matter from an urban integrated power plant boiler, respectively. Based on experimental results focusing on TSP, PM1, PM2.5, and PM2.5-10, the intensity of the source magnets is directly related to the dust capturing efficiency, and 7.41% of additional subway dust can be collected with a source magnet of 3,000 gauss for structure of the dust was more effective for magnetic capture than the elemental iron composition. It was also found that the magnetized mesh filters contributed synergistically to improve the fine dust capture with low pressure resistance.
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