Indoor Air Treatment by Photocatalysis:Some Examples at Sub ppmv Concentrations

摘要

Indoor air quality is becoming today a serious concern for the population of Western Countries.People spend 80 to 90 % of their time in confined spaces.They are exposed to a very large variety of pollutants(volatile organic compounds:VOC)coming from human activities,heating,chemicals released by furniture,building materials etc...Odours problems encountered in such places are related to the presence of these VOCs sometimes in sub ppmv concentration.Photocatalysis can address efficiently this problem.This paper presents relevant results obtained in closed rooms with a new air purification system based on photocatalysis.Performance is described in terms of both chemical abatement at sub ppmv concentration and odour removal.