Phosphogypsum: potential uses and problems – …
Phosphogypsum (PG: CaSO4·2H2O) is a waste product generated by the phosphate industry. ... PG, discharged into the sea, watercourses or in wilderness stocks, contains toxic elements harmful to ...
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The leaching characteristics of common toxic elements in phosphogypsum
Phosphogypsum (PG) is an acid by-product from the production phosphate fertilizers that is produced in large amounts all over the world. However, it is challenging to reuse this waste due to the quantities of various impurities in PG and technical restrictions, resulting in PG accumulation, which threatens adjacent environments.
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Phosphogypsum Recycling: A Review of Environmental …
Phosphogypsum is an almost unused by-product of phosphate fertilizer production, which includes several valuable components—calcium sulphates and rare …
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Exploring the potential reuse of phosphogypsum: A waste …
Phosphogypsum (PG), the main industrial by-product of phosphate fertilizer industry, primarily consists of calcium sulfate dihydrate. However, it contains various impurities with variable quantities depending on the origin of the phosphate rock. ... (2010) evaluated the potential of PG stacks as a source of mobile toxic impurities through total ...
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Phosphogypsum production and utilization in China
Phosphogypsum (PG) is a radioactive industrial by-product produced in large quantities when processing phosphate ores into fertilizers. With rapid growth of high concentration phosphate and compound fertilizers production in China, PG production is increasing every year. Phosphogypsum is usually stored in such a way that it not only …
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Phosphogypsum
Phosphogypsum contains substantial quantities of P, which can be beneficial if large amounts of gypsum are applied. The levels of the other elements in the materials are so low that they are of little importance. Phosphogypsum from Florida contains 226 Ra and gives off radon (222 Rn) gas, which poses a potential health hazard (Mays and Mortvedt ...
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Harmless treatment technology of phosphogypsum: …
Phosphogypsum is one of the typical by-products of phosphorus chemical industry. As a strategic industry related to the national livelihood of China, phosphorus chemical industry has accumulated and produced a significant amount of phosphogypsum. ... Directional stabilization of toxic and harmful substances J Environ Manage. 2022 Mar 3;311: ...
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Phosphogypsum: Properties and Potential Use in …
Phosphogypsum is currently marketed in Brazil, China, Spain, India, Kazakhstan, the Netherlands, and the United States of America. ... (fluorine compounds and other toxic elements), exhalation of radon gas, inhalation of radioactive dust, erosion, and instability of stockpiles. Further details about the ecological impact of PG storage are ...
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Phosphogypsum Stacks
In 1989, stacking of phosphogypsum became a legal necessity when the U.S. Environmental Protection Agency (EPA) banned the use of phosphogypsum. In 1992, this rule was modified to allow the use of …
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Characterization of phosphogypsum deposited in Schistos remediated
Perez – Lopez, R., Alvarez – Valero, A., Nieto, J.M. (2007)Changes in mobility of toxic elements during the production of phosphoric acid in the fertilizer industry of Huelva (SW Spain) and environmental impact of phosphogypsum wastes. J Haz Mat 148: 745-750. Google Scholar
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A Timeline of the Piney Point Wastewater Disaster
2004. The state continues dumping wastewater from Piney Point into Bishop Harbor, leading to algal blooms and fish kills.; Hurricane Francis causes a hole in one of the facility's dikes, resulting in a wastewater leak. 2006. HRK Holdings buys the property and plans to use it as a site to store dredge material, or sediment that is removed from the …
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What Mosaic Is Doing With Its 'Gypstack' To Prevent Another …
Today, there's little possibility of eliminating these toxic mountains run by Mosaic or anyone else. One idea Mosaic supports involves road construction. Last fall, the Environmental Protection Agency approved the use of the byproduct called phosphogypsum for road base. But that idea is the subject of a lawsuit from a coalition …
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Assessing the hepatotoxicity of phosphogypsum leachate in …
The phosphogypsum leachate for the experiment was collected from the surface of an open-air leaching pond (with a volume of 2000 m 3) in the phosphorus chemical industry area of Kaiyang County, which is located northeast of Guiyang City, Guizhou Province, China (Fig. 1).A large phosphogypsum landfill is located near the …
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The leaching characteristics of common toxic elements in …
In the present study, we revealed a systematic leaching mechanism of potential toxic elements in PG and have provided guidance and a reference for PG …
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Phosphogypsum circular economy considerations: A critical …
Approximately 58% of the PG are stacked, 28% are discharged in coastal waters and only 14% are further processed. This critical review provides an overview of …
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Imminent Failure of Phosphogypsum Stack in Tampa Bay …
Manatee County officials have issued evacuation orders for the area surrounding Florida's Piney Point in anticipation of the imminent catastrophic collapse of a phosphogypsum stack retention pond holding up to 700 million gallons of wastewater. It has been reported that 22,000 million gallons a minute are being discharged from the …
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Nanomaterials | Free Full-Text | The Generation Process, …
As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological environmental protection. For the moment, the storage quantity of phosphogypsum is still rising as a result of the increasing phosphate fertilizer …
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The addition of biochar as a fertilizer supplement for the …
DOI: 10.1016/j.jclepro.2020.124052 Corpus ID: 225326075; The addition of biochar as a fertilizer supplement for the attenuation of potentially toxic elements in phosphogypsum-amended soil
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Phosphogypsum and the EPA Ban
Phosphogypsum formed during the chemical processing of north Florida rock, however, has only 5 to 10 pCi/g and is sold to peanut farmers who use it as a soil amendment to provide the calcium needed to form strong peanut shells. ... Phosphate Companies and EPA's Toxic Release Inventory; 6 – Environment and Health. Phosphogypsum Stacks; …
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Preparation of gypsum with high purity and whiteness from phosphogypsum …
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, powder with a slight odor and ...
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Effects of phosphogypsum on enzyme activity and microbial …
Phosphogypsum (PG) is a solid waste produced from decomposition of phosphate rock in sulfuric acid. It can improve the physicochemical properties of soil. However, the application of PG will ...
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The addition of biochar as a fertilizer supplement for the attenuation
Phosphogypsum (PG) is an acid by-product generated during the breakdown of phosphate ore in the presence of sulfuric acid and has been used as a soil amendment, i.e., fertilizer, in most parts of the world. ... Cd, and As, are the most common toxic elements and pose a great threat to human health via agricultural products. These …
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Phosphogypsum | US EPA
Phosphogypsum is a solid waste byproduct from processing phosphate ore to make phosphoric acid that is later used in fertilizer. Phosphogypsum contains radium, which decays to form radon gas. Both radium and radon are radioactive and can cause cancer. The Clean Air Act regulations require that phosphogypsum be managed in …
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Co-plasma processing of banana peduncle with phosphogypsum …
Production of macro-nutrient rich biochar is important to broaden its use as soil fertilizer. In this work, we report production of potassium–sulfur rich biochar through co-plasma processing of banana peduncle biomass with phosphogypsum waste. Biochars were produced using indigenous low-power (15 kW) extended arc thermal plasma …
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Application of phosphogypsum in soilization: a review
Phosphogypsum is the most significant industrial solid waste in the world. Phosphogypsum has a complex composition and its traditional storage methods occupy large areas of land and also damage the environment. Currently, phosphogypsum is mainly used for the direct preparation of construction materials and chemical auxiliary …
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Phosphogypsum: potential uses and problems – a …
in wilderness stocks, contains toxic elements harmful to ecosystems and human health, including heavy metals and radionuclides, and there is therefore a concern regarding environmental impacts.
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Application of phosphogypsum in soilization: a review
Phosphogypsum as a nitrogen fertilizer retarder. The effective utilization rate of nitrogen fertilizers in global is low, and excessive application leads to environmental …
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Phosphogypsum is A Hazardous Waste & Toxic Substance
Phosphogypsum is a radioactive, toxic waste created by the fertilizer industry. Phosphogypsum is stored in stacks, rather than placed in a landfill or recycled, because the U.S. Environmental Protection Agency (EPA) has determined the radon gas it emits presents an unacceptable risk to public health.
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Potential Phosphogypsum Use
Potential Phosphogypsum Uses. ... Phosphate Companies and EPA's Toxic Release Inventory; 6 – Environment and Health. Phosphogypsum Stacks; Back to top. 1855 West Main Street. Bartow, Florida USA 33830. 863-583-9094. twitter; instagram; linkedin; youtube; giphy; mobile_app;
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Hurricane Ian Reveals Dangers of Proposal to Use Toxic Phosphogypsum …
ST. PETERSBURG, Fla.— Following Hurricane Ian's path of destruction across Florida, demolished roads and collapsed bridges highlight the danger of proposals to use toxic, radioactive phosphogypsum waste in road construction. For years, lawmakers have attempted to allow this dangerous practice ...
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