Sunday, September 13, 2009

Washing without water

Washing without water
From The Economist print edition
Sep 3rd 2009
Link to full article below

Environment: A washing machine uses thousands of nylon beads, and just a cup of water, to provide a greener way to do the laundry

Xeros Water? Who needs it?

SYNTHETIC fibres tend to make low quality clothing. But one of the properties that makes nylon a poor choice of fabric for a shirt, namely its ability to attract and retain dirt and stains, is being exploited by a company that has developed a new laundry system. Its machine uses no more than a cup of water to wash each load of fabrics and uses much less energy than conventional devices.

The system developed by Xeros, a spin-off from the University of Leeds, in England, uses thousands of tiny nylon beads each measuring a few millimetres across. These are placed inside the smaller of two concentric drums along with the dirty laundry, a squirt of detergent and a little water. As the drums rotate, the water wets the clothes and the detergent gets to work loosening the dirt. Then the nylon beads mop it up.

To read the full article:
http://www.economist.com/sciencetechnology/tq/displaystory.cfm?story_id=14299614&fsrc=rss
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