jump to navigation

–New Paint Absorbs Pollution 2003-02-05

Posted by clype in Gizmo, Health, Science.
trackback

A 'smog-busting' paint that soaks up vehicle pollution could soon be helping to clear the air in European cities.

The British invention, called 'Ecopaint', traps and neutralises noxious nitrogen oxide gases produced by vehicle exhausts.

Collectively known as NOx gases, these powerful pollutants cause respiratory problems and trigger smogs.

New Scientist magazine reports that the paint goes on sale in Europe next month [2003-03], although it is still being tested.

'Ecopaint's' makers, Grimsby-based 'Millennium Chemicals', believe it will give architects and town planners a new weapon with which to fight pollution.

The paint is being studied as part of a European programme assessing new anti-pollution measures.

It works by trapping NOx gases, which stick to microscopic particles of titanium dioxide embedded in the paint's base. The particles absorb sunlight, using this energy to convert NOx to nitric acid.

Alkaline calcium carbonate particles in the paint then neutralise the acid, producing carbon dioxide, water and calcium nitrate that wash away. When the calcium carbonate has been exhausted, the titanium oxide will continue to break down NOx, but the acid this produces will discolour the paint.

Because the particles are so small, the paint is clear, allowing different coloured pigments to be added. However the first 'Ecopaint' to go on sale will be white.

The paint is being lab-tested as part of the Europe-funded Photocatalytic Innovative Coverings Applications for De-pollution Assessment programme (PICADA).

"'Smog-busting paint' set to help clear city air ", Ananova 2004-02-04 We 19:01

 

 

Advertisements

Comments»

No comments yet — be the first.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: