The
Grainger challenge is a scientific competition
to find an economical way to
remove arsenic
from
arsenic-contaminated
groundwater.
This competition is being funded by the
United
States National Academy of Engineering and the Grainger
Foundation and is meant to help provide safe drinking water to developing countries such
as Bangladesh
.
In 2007, the winner of this prize was Dr.
Abul Hussam, for his invention of the
Sono arsenic filter.
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