| Abstract [eng] |
The aim and object of the study was to analyse factors affecting effectiveness of the complex non-thermal plasma air purification system for volatile organic compounds removal from indoor air. Air cleaning efficiency was measured by different configurations of the system: energy density (0,96, 1,20, 1,44, 1,68, 1,92 J/l) and different non-thermal plasma combinations with TiO2 catalyst, UV radiation and activated carbon sorbent. During the study 10 mg/m3 concentration of volatile organic compound - toluene and 150 m3/h of air flow were the same. Ozone and residual toluene concentrations were monitored by an Indoor Air Quality Monitor AEROQUAL IQM – 60 device‘s NHMC and ozone sensors. On of the main factors affecting effectiveness of complex air purification system was energy density. In case of the highest 1,92 J/l energy density, residual volatile organic compound concentration was reduced by 50 – 60 % , in comparison with the lowest 0,96 J/l energy density. Another factor affecting the effectiveness of the complex air cleaning system is combination of treatment methods. The highest toluene removal efficiency has been achieved with plasma, activated carbon sorbent and two stages of TiO2 catalysis complex - O3+SO3+S+K2/2 (72 – 90 % efficiency). The best suitable combinations were (O3 + S) at 0,96 J/l energy density (72% efficiency) and (O3+S+K2/2) combination at 1,44 J/l (83% efficiency). Cost of regenerative system together with the air cleaning system for energy consumption will be approximately 17 - 19 Eur/month (about 136-151 kWh/month). |
