Energy Biz: Cleaning Coal May be Possible
"... Eliminating 99 percent of the pollution from coal, the Coal-Direct Chemical Looping (CDCL) technique will have a significant impact on the rate of global warming. The Environmental Protection Agency has found that in 2010, coal-burning power plants were responsible for about one-third of the country's carbon dioxide, equivalent to 2.3 billion metric tons. If energy can be obtained from coal without burning it, this number should drop considerably.
Liang-Shih Fan, a chemical engineer and director of Ohio State's Clean Coal Research Laboratory, explains the process, "We found a way to release the heat without burning. We carefully control the chemical reaction so that the coal never burns--it is consumed chemically, and the carbon dioxide is entirely contained inside the reactor." The metal from the iron-oxide is recyclable and the only waste products are coal ash and water. If everything goes according to plan, Fan is confident that his discovery can be used to power energy plants within the next 10 years. ..."