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Dutch Town Lays Air-Purifying Concrete

tech.slashdot.org — "In an effort to combat air pollution, a Dutch town has paved some of its streets with air-purifying concrete. It contains a titanium dioxide-based additive that utilizes sunlight to turn car exhaust into harmless nitrates." The Slashdot discussion has some very interesting caveats and suggestions.

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  • bwebb, on 08/06/2008, -0/+0I'd be curious to see how well a standard city street sweeper would perform at removing the clogging elements.

    In the event that they perform well, the environmental impact due to the production of the titanium dioxide may actually end up being less than the net reduction in pollutants with no extra effort required. Additionally, if the nitrates could be harnessed for use in city beautification projects and parks as fertilizer, this could be very beneficial for city streets.

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