Phosphogypsum Disposal - The Pros & Cons of Wet versus Dry Stacking
Worldwide, phosphogypsum by-product from a phosphoric acid plant is mostly stacked on land and in some countries (Morocco, Tunisia, South Africa and Mexico) discharged into the sea. More than 200 million tonnes of phosphogypsum are produced annually. Less than 5% of the production is used commercially, primarily for agriculture. This paper focuses on the transport and on-land disposal of phosphogypsum in dry stacks and wet stacks.