Energy Citations Database (ECD) - - Document #7089692
In a recent dispatch, now accessible via:
Iowa Mines Metals from Coal Ash for the USDOE | Research & Development; which centers on two US Patents for the recovery of valuable metals from Coal ash: "United States Patent 4,386,057 - Recovery of Iron Oxide from Coal Fly Ash" and "United States Patent 4,397,822 - Process for the Recovery of Alumina from Fly Ash";
we again confirmed that nearly all of the by-products of Coal combustion, just like Carbon Dioxide, as once again demonstrated in our report of: