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Food as Fuel

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Eggshells into Hydrogen Fuel

• How it works: Eggshells release and absorb carbon dioxide repeatedly, in a reaction that produces hydrogen fuel, an emission-free source of power and heat.
• Who’s trying it: Liang-Shih Fan, Ph.D., distinguished university professor of chemical and biomolecular engineering at Ohio State.
• Comparative Cost: The patented technology isn’t being developed commercially yet.
• The numbers: The U.S. produces 450,000 tons of eggshells yearly, which could generate enough energy to sustain 168,000 American drivers for a year.
• Timeline: “As soon as we have an investor,” Fan says.

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