Lock Up CO2 In DVDs


71519130_a643617ede_m.jpg Here’s an idea. Carbon dioxide removed from smokestack emissions could become a valuable raw material for the production of polycarbonate plastics in eyeglass lenses, car headlamps, DVDs, CDs, and drink bottles. The processes involved would offer less expensive, safer and greener products, researchers suggested in two separate reports presented at the annual meeting of the American Chemical Society.

“Carbon dioxide is readily available, especially from the smokestack of industries that burn coal and other fossil fuels,” says chemist Thomas Müller. “And it’s a very cheap starting material. If we can replace more expensive starting materials with CO2, then you’ll have an economic driving force.” There’s already a huge market, and millions of tons of polycarbonates are sold each year. But what hasn’t been factored in is that these hard, tough materials represent what Müller calls “intriguing sinks” for exhaust carbon dioxide. In fact, there’s no other consumer product with such potential for removing CO2 from the environment.

So, we may be drinking from a CO2 plastic bottle (well, hopefully not) and watching movies on waste-CO2 DVDs (well, preferably streaming) soon. “I would say it’s a matter of a few years before CO2-derived polymers are available to the public,” says Müller.

Good idea: make polycarbonates from waste CO2. Better idea: make less pollution and less polycarbonate plastics.

Julia Whitty is Mother Jones’ environmental correspondent, lecturer, and 2008 winner of the Kiriyama Prize and the John Burroughs Medal Award. You can read from her new book, The Fragile Edge, and other writings, here.

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