Table 2 Measured average fiber diameter, specific surface area, thickness, pressure drop, PM2.5-removal efficiency, and quality factor (QF) of a commercial semi-HEPA filter and three different types (PVA, PVDF, and PAN) of NF-based filters.

From: Moisture Effect on Particulate Matter Filtration Performance using Electro-Spun Nanofibers including Density Functional Theory Analysis

Filter medium

Mean fiber diameter [nm]

Specific surface area [m2/g]

Thickness [µm]

Pressure drop [Pa]

PM2.5-removal efficiency [%]

Quality factor, QF [Pa−1]

PVA

~210

25.4

52

175

70.81

0.007040

PVDF

~590

8.5

43

145

83.01

0.012400

PAN

~500

10.1

40

162

93.02

0.017285

Semi-HEPA

~15,000

1.1

650

189

96.15

0.017233

Back to article page