WebMar 13, 2024 · Phosphogypsum (PG) is a hazardous industrial solid waste product from the wet phosphate industry 1, 2. The widespread deposition of that fine, light- to dark-grey, … WebPhosphogypsum is only slightly soluble in water, about 2g per liter (EPA89a). Phosphogypsum contains appreciable quantities of radium-226, uranium, and other uranium decay products. This is due to the high uranium concentration in phosphate rock which was discussed in Section 2.1.1.
Phosphogypsum: potential uses and problems – a review
Webphosphogypsum was provided from the Moroccan phosphate industry located in El Jadida, Morocco. The collected PG was dried at 80°C, ground, and sieved through an 80 µm sieve. The chemical composition of PG was evaluated by ICP analysis; major components and traces are summarized in Table 1. Other components of phosphogypsum include silica (5–10%), fluoride (F, ~1%), phosphorus (P, ~0.5%), iron (Fe, ~0.1%), aluminum (Al, ~0.1%), barium (Ba, 50 ppm), lead (Pb, ~5 ppm), chromium (Cr, ~3 ppm), selenium (Se, ~1 ppm), cadmium (Cd, ~0.3 ppm). About 90% of Po and Ra from raw ore is retained into … 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 Various applications have been proposed for using phosphogypsum, including using it as material for: • Artificial reefs and oyster beds • Cover for landfills • Road pavement 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 Phosphogypsum is a by-product from the production of phosphoric acid by treating phosphate ore (apatite) with sulfuric acid according to the … 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 biotime 8.0 user manual
Phosphogypsum - Wikipedia
WebJan 1, 2024 · Phosphogypsum is a mineral fertilizer production waste, Hazard Class 4. It has a pasty appearance, its color is in shades of gray, hygroscopic, sintering. The density of phosphogypsum is 1.2 g/cm 3. Contents of the main components (% wt.): CaSO 4 93; P 0.1; F total 0.2–0.5; F 0.05–0.17; and moisture is 39–40 [3]. WebJan 1, 1995 · The composition of phosphogypsum was dominated by Ca and S (not shown) because it is mainly composed of gypsum. Silica (SiO2) and P205 were the next most … WebMar 1, 2024 · It can be seen that phosphogypsum contained harmful impurities such as phosphorus and fluorine. After full water washing, the total P 2 O 5 content in phosphogypsum decreased from 0.78% before water washing to 0.64%, indicating that the soluble P 2 O 5 content in phosphogypsum was 0.14%. biotility bace exam