Non-thermal plasma coupled with photocatalysis for indoor air treatment at high air flow rates: effects on VOCs and bio-aerosol
Vazquez T, Lavrikova A, Wiedermann D, Babic J, Palko M., Palko M., Machala Z.
J. Electrostat., https://doi.org/10.1016/j.elstat.2025.104160 138, 104160 (2025)
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Abstract: Advanced technology combining non-thermal plasma (NTP) with photocatalytic oxidation (PCO) for indoor air purification at high flow rates is tested on formaldehyde and bio-aerosol with E. coli bacteria. Two reactors were
examined, both using TiO2 photocatalyst: reactor 1 with dielectric barrier discharge (DBD) tubes and UV-C, and reactor 2 with a DBD module and UV-A LEDs. The NTP-PCO significantly reduced formaldehyde using a single pass method with high 250 L/min air flow rate. The bioaerosol decontamination achieved 3 log reduction up to total bacteria inactivation. This proof-of-concept demonstrates a promising approach of the combined NTP-PCO for scalable indoor air purification.
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