Towards sustainable coal industry: Turning coal bottom
WEBJan 15, 2022 · Coal fly ash (CFA) and coal bottom ash (CBA) are the two forms of coal combustion byproducts produced in the coalfired electric utilities, representing 70–85 and 15–30 wt% of the total ash generated. In 2019, the United States generated approximately 30 million tons of coal fly ash and 9 million tons of bottom ash from coalfueled power ...