Development of Multistage Photocatalytic Reactors for Air Purification
The basic principles of the performance of catalysts in the processes of profound oxuidation of organic compounds present in the air are considered. Within the framework of Langmuir-Hinshelwood model, we calculated the kinetic parameters of photooxidation of a number of compounds (rate constants and adsorption constants) and then used them in the development of reactors for air purification. It was demonstrated that in order to increase the rate of photocatalytic oxidation, it is necessary to optimize the geometry of the photocatalytic filter, and to use inorganic air-permeable membranes (foam ceramics and glas cloth) as supports for the photocatalyst. In addition, the efficiency of air purification can be increased due to the use of multistage reactors in which the air to be purified passes consecutive stages of electrostatic filtration, adsorption and photocatalytic purification. An example of implementation of the proposed concept of multistage purification of the air at the industrial enterprise SPA Luch (Novosibirsk) is described