Aerogel has been around for decades. It's the lightest substance ever created, being 99% air. It's strong, light, translucent and is excellent for sound-proofing. But the really exciting thing about aerogel is that it insulates 37 times better than fiberglass. Using aerogel as insulation in walls, ceilings, and (as it's transparent) even between double-pained windows, could drastically reduce the amount of energy used in heating and cooling.
Unfortunately, aerogel isn't easy to make. In fact, it costs about $1,300 per pound to produce. But a Malaysian researcer at the Universiti Teknologi, Dr. Halimaton Hamdan, has led a team of researchers who have created a way to produce aerogel that will be 80% cheaper.
What's more, the new aerogel is produced from rice husks, a discarded agricultural product. As you might expect, Malaysia has plenty of rice husks, so they're pretty excited about the possibility of turning them into something valuable. As such, the government has given Hamdan a $65 M grant to help develop a technique for the large-scale production of the new aerogels.
Hamdan's breakthrough was at first accidental. She wanted to do research on silica, but was having a hard time finding the raw material. One night, she saw a television program on the difficulty of disposing of rice husks. And rice husks, it turns out, are 20% silica. After eight years of work, Hamdan finally found a cheap way to produce pure silica from rice husks. And once the silica is acquired, making the aerogel is a cinch.
If Dr. Hamdan and her colleagues are able to use that $65 M to scale up production of this material, we should soon be seeing it everywhere. If that happens, the energy savings would be incredible. As a bonus; the production of Maerogel (short for Malaysian Aerogel) would also make use of an abundant natural waste product.
written by Magnus H., April 09, 2008
written by Magnus H., April 10, 2008
written by Lauren, April 10, 2008
written by Jim, April 11, 2008
written by Matt, April 20, 2008
written by Stephen Bradley, August 13, 2009
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