Measurement and prediction of breakthrough curve of low-concentration toluene adsorbed by activated carbon

People spend most of their time indoors. The volatile organic compounds (VOCs) in indoor air represented by toluene inevitably affect people's health. Activated carbon can effectively reduce VOCs pollution. experiments the previous studies were carried out at concentration tens or hundreds ppm, which could not reflect actual adsorption performance activated conditions. In this study, a method was proposed to predict breakthrough curve ~1 ppm. based on Wheeler-Jonas model, equilibrium capacity predicted Freundlich equation, and rate constant obtained Yoon-Nelson equation. curves good agreement with experimental data range 0.5~4.0 using relationship inlet toluene. When breakout fraction 20-85%, relative deviation 5.54% 4.08% 0.5 1.0 This service life for ppb~ppm level.