Acoustic nanotubes

Carbon nanotubes, composed of cylindrical carbon molecules with a diameter of just a few nanometers (one millionth of a millimeter), possess electronic, mechanical, and chemical properties that are highly applicable to new technologies for treating contaminated water. Water passes freely through the tubes while their nanoscale diameter traps larger molecules. This process resembles traditional membrane filtration techniques, but uses acoustics instead of pressure. As a result, it uses much less energy than these other systems. NASA scientists initially developed the technology, but it has since become more widely available, making its way into agriculture. Another advantage of acoustic nanotube filtration is that users do not have to periodically clean the system of contaminants. Since it moves water away from contaminants rather than removing them from the water, it retains its effectiveness for extended periods.