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From nanotechweb.org: tech update:
A few cents worth of single-walled carbon nanotubes (SWNTs) could be sufficient to stop viral and bacterial pathogens in their tracks and provide a point-of-use treatment for contaminated water. That's the view of Menachem Elimelech, director of Yale University's environmental engineering program.
Single-walled carbon nanotubes in action
Last year, the US-based group showed that direct contact with SWNTs can deactivate bacteria (see related story - Carbon nanotubes render E. coli inactive) and now the researchers are busy putting their findings to use in the lab.
The team's prototype filter consists of a polymer microporous membrane covered with a thin layer (2-6 µm) of SWNTs. The design allows high-water fluxes and low operating pressures, which will help to keep operating costs down.
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