Dutch scientists have released a study on photocatalytic pavement, otherwise known as "smog-eating pavement", that shows that pavement treated with titanium oxide can actually reduce pollution by up to 45%:
Dutch scientists are heralding the results of an experimental pavement they say was able to cut air pollution by wide margins.There is at least one example of smog-eating pavement that has already been installed in the United States...in Chicago.
The news was published online in June after researchers working for the Eindhoven University of Technology spent years studying smog-eating pavement used on a city block in Hengelo, Netherlands.
According to the paper titled "Full scale demonstration of air-purifying pavement," the block with the special pavement reduced nitrogen oxide air pollution up to 45 percent in some ideal weather conditions, resulting in an average reduction of 19 percent over a day.
The "photocatalytic" pavement used in Hengelo had been sprayed with titanium oxide (TiO2), a chemical that can take air pollutants, such as nitrogen oxide, and convert them into less-dangerous chemicals, such as nitrates, the paper's authors report.
Obviously, we'd need mass installment of smog-eating pavement in urbanized areas all over the world in order to be able to properly determine whether or not smog-eating pavement has the ability to neutralize or reverse global warming, however, the fact that smog-eating pavement can significantly reduce the amount of air pollution is certainly worth installing smog-eating pavement all over this country.