Dynamic modeling process from the hexane removal of contaminated air bio filtration method

Purification of polluted air from volatile organic compounds by means of biologic methods has been considered due to great advantages. Biofiltration is one of the best biologic methods for doing such processes. In this research, a mathematical model has been presented in order for Biofiltration process of polluted air in which limiter effects of oxygen and humidity have been considered. Since, microbe’s inclination to substrate and microbial growth and production output of biomass are effective on bio filter’s performance, evaluating the effect of these quantities is necessary. Dynamic modeling of Biofiltration process of polluted air in stable and unstable conditions was conducted by emphasizing on humidity in the equations of mass transfer and sensitivity analysis in order for determining change effect of this parameter on the performance of model. The results show that the maximum amount of special growth results in the increase of absorption capacity, and also the model rightly confirms that constant increase of saturation 114 Morteza Kashefi Asl et al. reduces the absorption capacity; whilst by means of this model, we can show that special surface switch and thickness change of biofilm are effective on absorption capacity.