2017 article
Plasma textiles as fibrous filter media
FIBROUS FILTER MEDIA, pp. 191–210.
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(Web of Science)
Source: Web Of Science
Added: August 6, 2018
Plasma textiles are a new class of compact filters which provide enhanced submicron particle filtration for particle diameters ranging from 30 to 300 nm without exhibiting a most penetrating particle size (MPPS). Unlike traditional passive respiratory filters, plasma textiles are active tunable filters which can be manufactured from woven, nonwoven, or knitted fabrics. They are embedded with high-voltage electrodes to produce in-situ room temperature/cold plasma. Simultaneous charging and capture of incoming submicron particles are achieved by a corona discharge that is initiated by applying high voltages beyond 6 kV. Both the woven and the nonwoven plasma textiles provide filtration efficiencies close to 100% for ultra-fine particles, indicating that electrostatic forces dominate at higher voltages. The maximum filtration efficiency obtained with the woven plasma textile exceeds HEPA specification and the nonwoven plasma textile exceeds the filtration efficiency of ULPA filters.