Purifying drinking water with 'super sand'

Sponsored by

June 23, 2011 -- Using nanotechnology, scientists have found a way to engineer sand with five times the filtering capacity of regular sand.

The researchers from Australia's Monash University, led by Mainak Majumder, say this new 'super sand' could significantly benefit developing countries, where more than a billion people lack clean drinking water.

To make the 'super sand,' researchers coated grains of sand with a nanomaterial called graphite oxide (GO). In lab tests, the 'super sand' was able to remove mercury and a dye molecule from water samples. Ordinary sand, they found, became saturated with 10 minutes of filtration. But the engineered sand continued to absorb the mercury for more than 50 minutes.

The scientists said the super sand's filtration performance was "comparable to some commercially available activated carbon." They said they are continuing to research ways to further enhance the sand to boost its contaminant removal efficiency.

###

Sponsored by

TODAY'S HEADLINES

WaterWorld launches third WaterShots online photo contest

WaterWorld has officially launched its third WaterShots online photo contest, intended to capture the essence of aging water and wastewater infrastructure across the nation.

Truckee Meadows Water Authority earns prestigious Presidents Award

The Truckee Meadows Water Authority of Reno, Nev., announced that it has recently received the Presidents Award from the Partnership for Safe Water for exceptional operation.

WERF requests proposals for sustainable integrated water management research

In an effort to support its integrated water program, the Water Environment Research Foundation is currently requesting proposals for two new research projects.

Trace amounts of 1,4 dioxane found in MN city water wells

The city of New Brighton, Minn., announced that a contaminant of emerging concern, 1,4-dioxane, has been detected in trace amounts in some of the city's wells. The likely source of the dioxane is the local Twin Cities Army Ammunition Plant.

FOLLOW US ON SOCIAL MEDIA