Study: Crystal removes arsenic cheaply

November 10, 2006

A common rust-like crystal may offer an inexpensive way to rid drinking water of hazardous levels of arsenic, Rice University researchers in Houston said.

The findings, researchers said, could mean helping to reduce cancer risk for millions of people in China and Southeast Asia, where high levels of arsenic occurs naturally in some water supplies, The Washington Post said. Arsenic contamination is also a threat to water supplies in Latin America, Africa and the United States.

Researchers found the magnetite particles 12 nanometers wide could bind up to 100 times as much arsenic as the larger filtering particles, yet still be extracted from test liquids inexpensively with a magnet, the Post said.

Researchers said further testing is needed to determine whether the technology is safe and can be used safely and is an improvement over other nanomaterials used in filtration systems.

Copyright 2006 by United Press International

Explore further: EPA sets limit for toxic pollutants released into waterways

Related Stories

Researchers find heavy metals along river after mine spill

September 19, 2015

Researchers say they found scattered accumulations of heavy metals along a 60-mile stretch of riverbank in Colorado and New Mexico a month after the Gold King Mine wastewater spill and say that any potential threat to crops ...

After spill, work suspended at 10 mine sites

September 12, 2015

Site investigations and some cleanup work at 10 polluted mining complexes in four states were suspended because of conditions similar to those that led to a massive wastewater blowout from an inactive Colorado gold mine, ...

Drilling boom brings rising number of harmful waste spills

September 8, 2015

Carl Johnson and son Justin are third- and fourth-generation ranchers who for decades have battled oilfield companies that left a patchwork of barren earth where the men graze cattle in the high plains of New Mexico. Blunt ...

Recommended for you

Horn of Africa drying ever faster as climate warms

October 9, 2015

The Horn of Africa has become increasingly arid in sync with the global and regional warming of the last century and at a rate unprecedented in the last 2,000 years, according to new research led by a University of Arizona ...

Could 'The Day After Tomorrow' happen?

October 9, 2015

A researcher from the University of Southampton has produced a scientific study of the climate scenario featured in the disaster movie 'The Day After Tomorrow'.


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.