oxide concentrations of nitrogen in the German cities often exceed the maximum permitted levels for this compound toxic. This situation may now be about to begin to change. Change will be installed as a novel flagstones that will help protect the environment. Coated with titanium dioxide nanoparticles, these unique stones reduce the amount of nitrogen oxide in the air.
In Germany, the air quality is not always as good as could be. Data from the Federal Ministry of the Environment are clear about that. In 2009, the quantities of toxic nitrogen oxides in the atmosphere exceeded the maximum permitted levels of not less than 55 percent of monitoring stations in urban areas. The ministry reported that motor vehicle traffic on the roads is one of the main sources of these emissions.
Following these events, the city of Fulda is currently the scene of a pilot program to test the effectiveness of this new way to combat air pollution. All along the street Petersburg, will be placed slabs of this special class that will hopefully clean the air pollution cited excessive nitrogen oxide. In the street, pollution levels recorded last year exceeded the annual average limit of 40 micrograms per cúbico.El titanium dioxide covering the slabs becomes nitrate nitrogen oxides and some other harmful substances. Titanium dioxide is a photocatalyst, using sunlight to accelerate a chemical reaction that occurs naturally in appropriate circumstances. The speed of this reaction increases as exposure of the material makes the light air cleaners solar.Las slabs were developed by the company Nüdling Betonelemente FC. Has verified its effectiveness in the Fraunhofer Institute for Molecular Biology and Applied Ecology in Schmallenberg, where investigators also found the risk of nitrates resulting to the environment.
Further information: http://www.scitech-news.com/2010/09/paving-slabs-that-clean-air.html
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