PHNX Materials has devised a way to strip fly ash of sulfur and aluminum, impurities that concrete companies would rather ...

Because cement emits large amounts of CO₂ — both from the high-temperature kilns used in its production and from the chemical ...

ANDERSON COUNTY, Tenn. — The Tennessee Valley Authority is hoping to amp up the process of coal ash recycling by taking coal ash and turning it into something useful for the environment while ...

A US-based startup focused on recycling coal ash, reducing cement emissions, and decarbonizing the concrete industry has ...

The decades-old coal plant is expected to be retired in the next few years, and closing means dealing safely with its coal ash. Much of it has already been trucked 40 miles away for safe disposal.

In 2022, federal officials rebuked a major coal plant next to the Ohio River for letting coal waste — in a pile so big it could fill the Dallas Cowboys' football stadium twice over — threaten ...