Taking the Carbon Out of Coalhttp://www.realclearpolitics.com/articles/2014/10/27/taking_the_carbon_out_of_coal_124374.html
When coal burns, it emits a "flue gas" teeming with hard-to-separate pollutants -- but it doesn't have to. Instead, it can create a simple flow of carbon dioxide that's easy to capture.
That's the bold idea behind coal-direct chemical looping, or CDCL. The technology has been proven only in the lab, and it has many hurdles to clear before it can be used to generate electricity and capture carbon on a commercial scale. But it holds the promise of electricity from coal with very little pollution, in a nation where coal provides 18 percent of all energy and 24 percent of all carbon emissions.
According to an economic analysis Ohio State helped to conduct, if brought to a commercial scale, CDCL could capture 96.5 percent of the carbon released during the process while increasing the cost of electricity by 28.8 percent.
In a best-case scenario, the demonstration could be built later this decade, followed by a commercial plant in the 2020s.