A dual-geometry pore-size-resolved model to predict deep-bed loading in a wall-flow filter

Reusable and Transparent Impaction‐Based Filter with Micro Apertured Multiscale Polymeric Stencil for Particulate Matter Capture

“…The filter efficiency is calculated using Equation (). [ 2,25 ] $$$$\begin{eqnarray} && {\mathrm{Filter\;efficiency}}, \eta \nonumber\\ &&\quad = \frac{{{\mathrm{Amount\;of\;Inlet\;particles}} - {\mathrm{Amount\;of\;Outlet\;particles}}}}{{{\mathrm{Amount\;of\;Inlet\;particles}}}} \nonumber\\ &&\quad \ \ \,\times\, 100\left[\%\right]\end{eqnarray}$$$$…”

“…It is defined as −ln(1 − η )/∆ P , where η represents filter efficiency and ∆ P represents the pressure drop across the filter. [ 2,26 ] The pressure drop (∆ P ) is the resistance to airflow passing through the filter, measured in pascals (Pa). Table 1 shows the pressure drop values for the tested filters.…”

“…Particulate matter (PM) floating in the air influences climate change and threatens ecosystem and human health. [ 1–5 ] The PM, which is composed of complex compounds including ammonium, sulfate, nitrate, and carbon materials is categorized into PM1.0, PM2.5, and PM10 depending on the particle size. [ 6–8 ] And the latter number indicates the maximum aerodynamic diameter of the particles in the classification.…”