Two-stage electrostatic precipitators for the reduction of PM2.5 particle emission

An experimental study on the removal of submicron fly ash and black carbon in a gravitational wet scrubber with electrostatic enhancement

“…It is predicted that coal will remain the second-largest primary energy source until 2040. 1,2 Thus, reducing the particulate matter emitted by coal combustion remains an exacting task, [3][4][5][6] particularly for a large number of small-scale industrial boilers. On account of inefficient combustion modes, these boilers can produce not only a substantial number of submicron y ash but also black carbon, 7 which might cause extremely detrimental effects on both human health and the atmospheric environment.…”

“…8,9 These ne particles can penetrate far down into people's respiratory tracts, causing pulmonary injury and other diseases. 10 On the other hand, atmospheric visibility can be heavily reduced by numerous submicron particles suspended in the atmosphere due to their long retention time. 10 Even worse, black carbon particles also contribute to global warming because of their high absorbance of visible and IR light.…”

“…10 On the other hand, atmospheric visibility can be heavily reduced by numerous submicron particles suspended in the atmosphere due to their long retention time. 10 Even worse, black carbon particles also contribute to global warming because of their high absorbance of visible and IR light. 10 Therefore, reducing the emission of submicron particles is of great importance to human sustainable development.…”

“…10 Even worse, black carbon particles also contribute to global warming because of their high absorbance of visible and IR light. 10 Therefore, reducing the emission of submicron particles is of great importance to human sustainable development. In comparison with submicron y ash particles, black carbon particles are usually more difficult to remove by wet scrubbers, which are used in a large proportion of small-scale boilers.…”

Utilization of electrostatic precipitators for healthy indoor environments

“…Even though fiber-based filters could reach high efficiencies for the fine particles, such as HEPA filters, it also has a relatively high-pressure drop when compared to electrostatic precipitators [6]. Additionally, fiber filters do not operate properly at high-temperature applications [7]. Electrostatic precipitators use plate electrodes placed along the airflow path, accordingly do not increase pressure drop that much [8].…”