Increasing efficiency in the degradation of airborne pollutants by photocatalytically modified concretes

To reduce airborne pollutant concentrations, Steag Power Minerals and Kronos have developed a photocatalytic concrete ­additive to be used in the production of concrete pavers with air-cleaning properties.

1. Introduction

EU legislation increasingly defines limits for airborne pollutants as our awareness of the environment is growing, which directly influences our health and well-being [1]. Vehicle traffic is one of the major causes of frequently exceeding limits for particulate matter and nitrogen oxides (NOx) in heavy-traffic zones such as urban agglomerations. To reduce airborne pollutant concentrations, environmental zones have been implemented in some cities to restrict access to certain areas to low-emission vehicles. However, the base pollutant load from sources outside the environmental...

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