Air-cleaning paving slabs assessed in Germany

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Last month, we told you about an experiment with air-purifying concrete that was recently conducted in the Netherlands. Researchers resurfaced 1,000 square meters of a busy road with concrete paving stones that contained titanium dioxide (TiO2), a photocatalytic material that removes automobile-produced nitrogen oxides (NOx) from the air and converts them into nitrate with the aid of sunlight. When the air was tested up to one-and-a-half meters above those stones, NOx levels were found to be 25 to 45 percent lower than above regular concrete on the same road. Now, a similar study is underway in Germany, and is already showing promising results... Continue Reading Air-cleaning paving slabs assessed in Germany

Tags: Concrete, Environment, Fraunhofer, Pollution, Road, Titanium dioxide

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