Search: Look for:   Last 1 Month   Last 6 Months   All time

Electrified nano filter 'to kill 98pc of disease-causing bacteria in water'

Washington, Thu, 14 Oct 2010 ANI

Washington, Oct 14 (ANI): Scientists are reporting development and successful initial tests of an inexpensive new filtering technology that kills up to 98 percent of disease-causing bacteria in water in seconds without clogging.

 

Yi Cui and colleagues explain that most water purifier's work by trapping bacteria in tiny pores of filter material. Pushing water through those filters requires electric pumps and consumes a lot of energy. In addition, the filters can get clogged and must be changed periodically.

 

The new material, in contrast, has relatively huge pores, which allow water to flow through easily. And it kills bacteria outright, rather than just trapping them.

 

The scientists knew that contact with silver and electricity can destroy bacteria, and decided to combine both approaches. They spread sub-microscopic silver nanowires onto cotton, and then added a coating of carbon nanotubes, which give the filter extra electrical conductivity.

 

Tests of the material on E. coli-tainted water showed that the silver/electrified cotton killed up to 98 percent of the bacteria. The filter material never clogged, and the water flowed through it very quickly without any need for a pump.

 

"Such technology could dramatically lower the cost of a wide array of filtration technologies for water as well as food, air, and pharmaceuticals where the need to frequently replace filters is a large cost and difficult challenge," their report states.

 

The report appears in Nano Letters, a monthly American Chemical Society journal. (ANI)

 


LATEST IMAGES
Manohar Lal being presented with a memento
Manoj Tiwari BJP Relief meets the family members of late Ankit Sharma
Haryana CM Manohar Lal congratulate former Deputy PM Lal Krishna Advani on his 92nd birthday
King of Bhutan, the Bhutan Queen and Crown Prince meeting the PM Modi
PM Narendra Modi welcomes the King of Bhutan
Post comments:
Your Name (*) :
Your Email :
Your Phone :
Your Comment (*):
  Reload Image
 
 

Comments:


 

OTHER TOP STORIES


Excellent Hair Fall Treatment
Careers | Privacy Policy | Feedback | About Us | Contact Us | | Latest News
Copyright © 2015 NEWS TRACK India All rights reserved.