A high voltage electrostatic filter for particulate matter PM2.5 capture applied in motor vehicle exhaust system

Abstract

Abstract Increasingly strict air pollution regulations along with global warming issue have peeked the interest in cleaner emission emitted by motor vehicle. In line with this, this study was aimed to develop a particulate filtering system based on an electrostatic principle for particulate matter with the diameter less than 2.5 μm, as known as a fine particle, and to test the performance of the filter. The filter consists of aluminum anodes and cathodes as the electrostatic electrodes. These electrodes were placed into the filter frame and installed on a motor vehicle muffler. The test was conducted to estimate the filter performance by measuring particle concentrations before and after using the filters. The filter was tested under four different electrostatic voltages: V1 100 Volt, V2 200 Volt, V3 300 Volt, and V4 400 Volt. The results show that the filter can reduce fine particle concentrations with the best efficiency of 50%, 60%, 62%, and 68%, respectively for V1, V2, V3, and V4. Filter performance was directly influenced by the applied voltage and the time of the test.