Engineering Innovation Podcast and Radio Series

Incredible, Useful Eggshells

PostedMarch 23, 2008

Download File (mp3)

Randy Atkins:  In the U.S. alone, about 90 billion eggshells are tossed into landfills each year.  L.S. Fan, an Ohio State University engineer, says they should be used to trap greenhouse gases instead.

L.S. Fan:  450-thousand tons of eggshells can be used for a lot of the CO2 removal.

Randy Atkins:  Eggshells are mostly made of carbon dioxide-absorbing calcium carbonate.  Fan says it could line smokestacks and grab the global warming suspect, which can then be chemically released and pumped permanently underground.  The shell membrane is only a minor nuisance.

L.S. Fan:  We have a technique to very effectively separate a membrane...

Randy Atkins:  ...which is made of collagen and can be used in cosmetics and biomedical applications.  With the National Academy of Engineering, Randy Atkins, 103.5 FM, WTOP Radio.