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

CSSD expands performance standard to address treatment of shale wastewater

The Center for Sustainable Shale Development announced that it has expanded its wastewater Performance Standard 1 to address the treatment of shale wastewater at permitted facilities.

Water Council announces Round III of The Brew accelerator program

The BREW, a first-of-its-kind place-based global seed accelerator for water technology startups led by The Water Council, has announced that it is launching Round III of the program.  

Siemens to supply turbines for MI combined-cycled power plant project

Siemens has announced that it is supplying two gas turbines and one steam turbine for the Holland Energy Park combined-cycle power plant, to be constructed in the city of Holland, Mich.

CA city deploys smart water software for improved decision support, capital planning

In an effort to prioritize main replacement, coordinate outage response, pinpoint capacity deficiencies, and identify optimal flushing locations in the city of Santa Ana, Calif., the Santa Ana Public Works Agency is adopting Sedaru smart water enterprise software from IDModeling, Inc.

FOLLOW US ON SOCIAL MEDIA