Acoustic nanotubes

Carbon nanotubes, composed of cylindrical carbon molecules with a diameter of a few nanometers (one millionth of a millimeter), have electronic, mechanical and chemical properties that are highly applicable to new technologies for the treatment of contaminated water. Water passes freely through the tubes while their nanoscale diameter traps larger molecules. This process is similar to 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 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. Because it draws contaminants away from the water rather than removing them from the water, it remains effective for long periods of time.