Cold plasma is generated by applying energy (high voltage) combine with pressure and suitable frequency to activate atoms especially oxygen atom, transforming into “active oxygen” (O2 to O–). The property of active oxygen can be oxidized similar ozone (O3) but less concentration. Actually, the system is designed for odor removal and less contact time, approximately 1 second by high flow rate to make its highly efficient.
Ionization by non-thermal plasma
Only electrons are ‘hot’.
Gas can be passed through discharge resulting in treatment.
Gas remains relatively cool, hence the common term of ‘cold plasma’. Similar to a neon sign.
Active species for oxidation include N2+, O2+, N•, +O•, •OH, •O2H, and O3+
Benefits of Cold Plasma for odor removal in industry
Low movement, easy and maintenance save
Low energy consumption comparing to direct combustion
To increase 90% efficiency can be applied together with other method example scrubbing, activated carbon-adsorption or biofiltration
Highly efficient for odor removal
No mechanical wear
No supply of chemicals, biomaterial etc.
No waste at all
Cost saving
Compact
No impact from process fluctuations like dust, temperature, humidity etc.