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Indoor air purification using heterogeneous photocatalytic oxidation. Part II: Kinetic study

Paper ID Volume ID Publish Year Pages File Format Full-Text
47210 46464 2010 8 PDF Available
Title
Indoor air purification using heterogeneous photocatalytic oxidation. Part II: Kinetic study
Abstract

In part I to this article [1], the application of the heterogeneous photocatalytic oxidation (PCO) theory for the indoor air quality improvement was presented. With a modified TiO2 that can be activated by visible light as the photocatalyst coated on a special wall paper, and one typical indoor air pollutant nitric oxide (NO) as model pollutant, the PCO experiments were performed in indoor air conditions and results show its effectiveness as an indoor air purifying technology.As the second part of the above mentioned study, this article addresses the kinetics of the photocatalytic oxidation of NO. A kinetic reaction rate model is proposed to describe the PCO of NO under indoor air conditions. The influence of the indoor air conditions such as pollutant concentration, volumetric flow rate of the pollutant, relative humidity, irradiance, dosage of the photocatalyst, and reactor size is considered in this model. As an undesired intermediate product in the process of the PCO of NO nitrogen dioxide (NO2) is incorporated as well from its influence on the PCO process. The good agreement between the predictions from this model and the experimental results indicates the validity of the proposed kinetic model.

Keywords
Heterogeneous photocatalytic oxidation; Indoor air purification; Nitric oxide; Modified TiO2; Kinetic model
First Page Preview
Indoor air purification using heterogeneous photocatalytic oxidation. Part II: Kinetic study
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 99, Issues 1–2, 31 August 2010, Pages 58–65
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis