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June 18, 2009 8:00 AM PDT

(Almost) waterless washing machine on its way

by Mats Lewan

Just a cup of water and a bit of detergent. That's all that needs to be added to a virtually waterless washing machine from British company Xeros that's poised to hit the North American market.

The dirty job is done by small nylon beads that pull stains off garments and lock them into the nylon's molecular structure. The beads don't even seem to suffocate easily--they can continue to absorb dirt over hundreds of washes.

Nathan Wrench, program manager at Cambridge Consultants, holds the nylon beads used in Xeros' washing process.

(Credit: Xeros)

The technology builds on research out of the U.K.'s University of Leeds and has been applied in a concept washing machine with the help of Cambridge Consultants.

Now, after three years of testing, Xeros, a University of Leeds spinout (forgive the pun), has struck a deal with Kansas City-based GreenEarth Cleaning. It aims to start reselling Xeros washing machines throughout North America next year. (The concept device is being demonstrated Thursday at the Clean Show in New Orleans.)

But you won't be able to save water at home with the Xeros machines yet--the target market consists of commercial dry cleaning and laundry operations.

GreenEarth Cleaning will add the nylon bead technology to its proprietary dry cleaning method based on liquid silicone, or decamethylpentacyclosiloxane if you prefer the scientific name. Commercially, it's simply called D5.

Liquid silicone is a dry cleaning alternative to good old perchloroethylene, which is thought to produce toxic waste and is also classified as a probable human carcinogen.

Another recent alternative is washing with carbon dioxide under such high pressure that it becomes liquid--and no, it doesn't add greenhouse gases to the atmosphere as existing CO2 is used, but the downside is the high expense of the machines.

The upside with both CO2 washing and the British nylon beads is that garments are virtually dry immediately after being washed.

It's easy to think these almost-dry-cleaning processes would wear and tear the garments more than traditional laundry, but GreenEarth Cleaning insists there's no difference.

"The testing completed to date has indicated no appreciable difference in wear between garments processed in the Xeros technology versus the traditional laundry process," Tim Maxwell, president of GreenEarth Cleaning, told CNET News. "Extensive testing with silks, embroidered garments, and other delicate items have shown no ill effects."

Mats Lewan, IT and telecom editor at Swedish technology weekly Ny Teknik, has joined CNET News as a 2009 fellow with Stanford University's Innovation Journalism program. E-mail Mats.
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Add a Comment (Log in or register) (7 Comments)
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by self_inficted June 18, 2009 9:17 AM PDT
I can understand the need for water-efficient washers in many parts of the world. However, I would hope that they also develop robust recycling methods for the beads, otherwise it seems we are trading water-usage for landfill-space.
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by samhardin June 18, 2009 9:18 AM PDT
Sign me up
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by Michichael June 18, 2009 9:41 AM PDT
It's nylon beads. they can recycle them.
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by drewbyh June 18, 2009 10:29 AM PDT
Expensive I'm sure but I want one.
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by pjcamp June 18, 2009 10:48 AM PDT
So we've returned to the idea of beating the dirty clothes with rocks?
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by shiningdevil June 18, 2009 11:07 AM PDT
Are the beads basically just replacing the water? How would we get the clothes out after they're done washing? Wouldn't the beads fly everywhere while one's trying to take the clothes out? What if the beads get into the pockets?
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by Seaspray0 June 18, 2009 1:55 PM PDT
Have you ever seen a bean bag break? LOL.
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