New technology removes viruses from water

NEWARK, Del. (UPI) -- U.S. scientists have developed an inexpensive, non-chlorine-based technology that removes harmful microorganisms, including viruses, from drinking water.

The University of Delaware's patented technology -- developed by Professors Pei Chiu and Yan Jin, in collaboration with virologist Kali Kniel -- incorporates highly reactive iron in the filtering process to deliver a chemical "knock-out punch" to a host of notorious pathogens, from E. coli to rotavirus.

The scientists say their new technology could dramatically improve the safety of drinking water around the world, particularly in developing countries.

"What is unique about our technology is its ability to remove viruses -- the smallest of the pathogens -- from water supplies," said Chiu, who noted viruses are resistant to chlorination, which is the dominant disinfection method used in the United States.

By using elemental iron in the filtration process, the researchers found they were able to remove more than 99.999 percent of viruses from drinking water.

"Our iron-based technology can help ensure drinking-water safety by reducing microbial pathogens and disinfection byproducts simultaneously," Chiu said.

The University of Delaware is pursuing commercialization opportunities for the research and has filed patent applications in the United States, Canada, France, Germany and Switzerland.