Phosphogypsum: Phosphogypsum, Gypsum, By- product, Phosphate, Fertilizer, Sulfuric Acid, Phosphoric Acid

 
9786130516444: Phosphogypsum: Phosphogypsum, Gypsum, By- product, Phosphate, Fertilizer, Sulfuric Acid, Phosphoric Acid
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Phosphogypsum refers to the gypsum formed as a by-product of processing phosphate ore into fertilizer with sulfuric acid.Phosphogypsum is radioactive due to the presence of naturally occurring uranium and radium in the phosphate ore.Marine-deposited phosphate typically has a higher level of radioactivity than igneous phosphate deposits, because uranium is present in seawater.The United States Environmental Protection Agency has banned most applications of phosphogypsum with a radium-226 concentration of greater than 10 picocuries/gram (pCi/g). As a result, phosphogypsum which exceeds this limit is stored in large stacks.

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