
reverse osmosis
Carbon Nanotubes Strengthen Desalination Membranes
Adding carbon nanotubes to reverse osmosis membranes helps them withstand chlorine exposure without reducing their desalination abilities.

Nanofilter Uses Less Energy To Purify Wastewater
The nanofilter, which combines two of the final steps in the wastewater treatment process, could reduce the energy needed by up to five times.