WebApr 7, 2024 · Phosphogypsum is a combination of numerous elements, including the radioactive elements uranium, thorium, and radium. 74 The radium further decays into radon, a radioactive gas. 75 This waste is up to sixty times more radioactive than the original phosphate rock and, left untreated in phosphogypsum stacks, creates a … WebPhosphogypsum is radioactive due to the presence of naturally occurring uranium (5–10 ppm) and thorium, and their daughter nuclides radium, radon, polonium, etc. Marine-deposited phosphate typically has a higher level of radioactivity than igneous phosphate deposits, because uranium is present in seawater at about 3 ppb (roughly 85 ppb of total …
A radiological evaluation of phosphogypsum - PubMed
WebDigestion with sulfuric acid causes the selective separation and concentration of naturally occurring radium ( 226 Ra), uranium ( 238 U) and thorium ( 232 Th): about 80% of 226 Ra is concentrated in phospho-gypsum, while nearly 86% of 238 U and 70% of 232 Th end up in phosphoric acid ( Tayibi et al., 2009 ). WebThe combined analysis of (222)Rn activity concentrations and mesoscale meteorological conditions at Huelva city (Spain) was addressed in this study to understand the potential impact of phosphogypsum piles on the (222)Rn activity concentrations cities skylines convert train to metro
Phosphogypsum - Wikipedia
WebApr 2, 2024 · Phosphogypsum is the radioactive waste left over during phosphate mining, formed as a by-product from producing fertilizer, according to the U.S. Environmental Protection Agency. The waste... WebThe average measured gross gamma exposure rate on the phosphogypsum pile corresponded to a dose equivalent rate of 0.368 +/- 0.006 mu Sv h-1 (0.32-0.42 mu Sv h … WebOct 14, 2024 · The report indicates it will allow reuse of phosphogypsum at radioactivity levels similar to what is found in the stacks around Central Florida. The state is home to … cities skylines cracked all dlcs