While the filthy coal industry touts its far-off "clean coal" technology to help keep federal subsidies flowing, perhaps there's a simpler solution to the emissions and toxins these plants belch. A Texas company called Skyonic has developed a process it claims can reduce smokestack carbon by up to 90 percent by transforming the C02 into solid NaHCO3, better known by the brand name Arm & Hammer. Hey, baking soda from coal waste! Great idea, especially if—as the company claims—the stuff comes out food-grade clean. (Even so, I think I'll just use mine to eliminate fridge odors.)
The process, which is now being tested on a pilot scale in Texas, is driven by heat from the waste gases. It involves an input of sodium hydroxide (lye), which is produced on-site, and produces as byproducts hydrogen and chlorine gases, which could be sold at a profit along with the baking soda, the company says.
Skyonic CEO Joe David Jones told ZDNET, where you can read more on this, that his company's "SkyMine" technology also eliminates 97 percent of the heavy metals and most of the acids and nitrogen compounds, which would eliminate the need for pricey smokestack scrubbers. The company is working on a full-scale system it hopes to install in 2009 that would, it says, absorb the waste output of a large (500MW) plant—which includes about 338,000 tons of carbon annually.
Sounds almost too good to be true; pie-in-the-SkyMine, you might say. Still, if it pans out, there'll be plenty of baking soda for that pie, and one less reason to hate the coal industry. 'Course, there is a little matter of blowing the tops off mountains. ...