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July 10, 2008

Carbon nano tubes == cheap desalinization

This is pretty interesting stuff that could have a major impact in places like the Middle east, Africa, southern California and Florida.

...One of the most promising applications for carbon nanotube membranes is sea water desalination. These membranes will some day be able to replace conventional membranes and greatly reduce energy use for desalination.

In the recent study, the researchers wanted to find out if the membranes with 1.6 nanometer (nm) pores reject ions that make up common salts. In fact, the pores did reject the ions and the team was able to understand the rejection mechanism.

“Our study showed that pores with a diameter of 1.6nm on the average, the salts get rejected due to the charge at the ends of the carbon nanotubes,” said Francesco Fornasiero, an LLNL postdoctoral researcher, team member and the study’s first author

Fast flow through carbon nanotube pores makes nanotube membranes more permeable than other membranes with the same pore sizes...

Water is something Florida doesn't lack - we have an ocean full surrounding us. Fresh water is a different story. All sorts of ills have been blamed on wells tapping the aquifers and allowing salt water intrusion, sink holes, etc.

This story came out of Lawrence Livermore National Lab and warrants more exposure than the zero exposure the MSM is giving it so far.


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posted by Purp at 02:11 PM

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