Seawater desalination project receives $250,000 as XPRIZE semifinalists
In parts of the world where fresh water is scarce, many people rely on a process called “reverse osmosis” to desalinate seawater — flowing it over a membrane at high pressure to remove the minerals. Purdue University engineers have developed a variant of the process called “batch reverse osmosis,” which promises better energy efficiency, longer-lasting equipment, and the ability to process water of much higher salinity. Their team has been awarded $250,000 as semifinalists in the worldwide XPRIZE Water Scarcity competition, where their prototype will compete for a potential prize pool of $119 million.