Subscribe
Subscribe
MY AMERICAN SCIENTIST
LOG IN! REGISTER!
SEARCH
 
Logo IMG
HOME > MULTIMEDIA > Multimedia Detail

SCIENCE IN THE NEWS DAILY

New Desalination Technique Yields More Drinkable Water

from Nature News

More than a third of the world already suffers from shortages of potable water--with a rise to 50 percent expected by 2025. Desalination of seawater can help coastal communities address local shortfalls, although the process is costly, and releasing leftover brine back to the ocean has environmental implications. Now a new system promises to produce more drinkable water with less salty effluent.

Kamalesh Sirkar, a New Jersey Institute of Technology (N.J.I.T.) distinguished professor of chemical engineering, says he has devised a direct-contact membrane distillation (DCMD) system that can efficiently wring drinking water out of up to 20 percent-salt-concentrated brine. (After about 25 percent, salt precipitates out of the solution in the membrane distillation system and could damage the membranes, pumps, lines and other components, Sirkar says.)

Normal seawater has a salt concentration of about 3.5 percent, which means the new system can reprocess the same seawater several times. "More water can be recovered with less residue," Sirkar says.

Read more...


comments powered by Disqus
 

Connect With Us:

                   

Latest Multimedia

Audio: Using Computing to Advance Toxicology

Chemicals have changed our lives, providing new products and capabilities, but sometimes causing harm to ourselves and the environment... (click the link above to read more).

To view all multimedia content, click "Latest Multimedia."


RSS Feed Subscription

Receive notification when new content is posted from the entire website, or choose from the customized feeds available.


EMAIL TO A FRIEND :

Subscribe to American Scientist