WebPhosphogypsum, a waste by-product from wet-acid production of phosphoric acid, contains variable levels of metal impurities (Cd, Zn, barium (Ba)) and radionuclides (mainly uranium … WebPhosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric (V) acid) is a colorless, odorless phosphorus -containing solid, and inorganic compound with the chemical formula H 3 P O 4. It is commonly encountered as an 85% aqueous solution, which is a colourless, odourless, and non- volatile syrupy liquid.
Phosphogypsum - An Industrial Byproduct with Value
WebPhosphogypsum is a by-product of the chemical reaction called the “wet process,” whereby sulfuric acid is reacted with phosphate rock to produce the phosphoric acid needed for fertilizer production. There are approximately five tons of phosphogypsum produced for every ton of phosphoric acid produced. WebJun 19, 2024 · Phosphogypsum (PG: CaSO 4 ·2H 2 O) is a waste product generated by the phosphate industry. World production of this waste exceeds 200 million tonnes per year. … maschera leone da stampare
Superphosphate - an overview ScienceDirect Topics
WebMost of them use chemical methods to modify PG to store CO 2, ... The CO 2 storage and solidification rate R, and its calculation formula is as follows: (2) R=(C 1 –C 2)/C 1 *100%. ... Phosphogypsum is a typical representative of industrial solid waste. Although there are many directions of resource utilization, it has not been treated on a ... WebMar 17, 2024 · Phosphogypsum is a gray colored material comprised of silt or silt-sand sized particles. The particle size range of the material is 0.5–1.0 mm with 50–75% of the particles finer than 0.075 mm. The specific gravity of phosphogypsum is in the range of 2.3–2.6. The range of maximum dry density of the phosphogypsum from standard … Phosphogypsum is a by-product from the production of phosphoric acid by treating phosphate ore (apatite) with sulfuric acid according to the following reaction: Ca5(PO4)3X + 5 H2SO4 + 10 H2O → 3 H3PO4 + 5 (CaSO4 · 2 H2O) + HX where X may include OH, F, Cl, or Br Phosphogypsum is radioactive due to … See more Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock. It is mainly composed of gypsum (CaSO4·2H2O). Although gypsum is a widely used material … See more Phosphogypsum may pollute the environment by its phosphorus content causing eutrophication, by its toxic heavy metal content, and by its radioactivity. PG releases See more • Chernysh, Yelizaveta; Yakhnenko, Olena; Chubur, Viktoriia; Roubík, Hynek (9 February 2024). "Phosphogypsum Recycling: A Review of Environmental Issues, Current Trends, and Prospects". Applied Sciences. 11 (4): 1575. doi:10.3390/app11041575 See more Various applications have been proposed for using phosphogypsum, including using it as material for: • Artificial reefs and oyster beds • Cover for landfills See more • Gypsum § Refinery waste • Red mud - highly alkaline waste product from aluminum processing • Mine tailings - general issue of waste products left after mining See more maschera leone fai da te