At the rim: Mods to nanotubes help filter salt from seawater
Pocket Science: Exploring the 'What,' 'So what' and 'Now what' of Husker research
Welcome to Pocket Science: a glimpse at recent research from Husker scientists and engineers. For those who want to quickly learn the “What,” “So what” and “Now what” of Husker research.
As the global population continues to climb, the demand for drinkable freshwater is likewise rising. One potential solution to the shortages now threatening one-third of the world’s people involves removing salt from seawater and saline aquifers, which collectively represent 98 percent of humanity’s water supply.
To do so, some researchers have proposed filtering the water through nanoscopic tubes of carbon, which could prove more cost- and energy-efficient than other approaches.
The ability of carbon nanotubes to filter sodium while still allowing water to pass through can depend on many factors, including their diameters and the interactions of electrically charged atoms on their rims.
By detailing the theoretical explanations for its findings, the study could guide experimentation and the eventual design of nanotubes rimmed with oppositely charged atoms to improve desalination.