These products include 350,000 tonnes of PPA at $2,300 /t, 220,000 tonnes of secondary acid at $1,200 /t and 3 million tonnes of gypsum at $10 /t, a product produced through the conversion of ...

Environmental scientists have developed a circular process for eliminating the risk posed by phosphoric acid plant wastewater. The process turns the environmentally toxic wastewater into clean ...