Issue Date: July 15, 2013
Recycling Rice Husks
Delicate grains of rice grow with tough husks that keep insects and bacteria out yet still circulate air and moisture. The husks accomplish this feat thanks to nanoporous layers of silica that are strong yet breathable. Now, researchers in South Korea have come up with a way to convert this silica into silicon so that the hundreds of millions of tons of rice husks produced each year might find new life as high-value materials (Proc. . . .
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