'Radioactive' roads? Phosphogypsum could be used in …
Florida social media is abuzz about "radioactive" roads in the state thanks to a new bill (HB 1191) that landed on Ron DeSantis' desk last week.
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Florida phosphogypsum road debate continues
Florida phosphogypsum road debate continues: what the material is and isn't. By Jeff Butera Tampa. ... citing concerns it would harm people and hurt the environment. "It is a toxic material and ...
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What is a gypsum stack?
Phosphogypsum (PG) is a by-product of phosphate fertilizer manufacturing. 30+ years ago, the EPA required PG be stored in stacks based on very conservative risk exposure guidelines. ... Typically, it enters the food cycle through the soil where it nourishes crops, and in turn, nourishes people and animals when those crops are eaten. 2 How is ...
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A review on the environmental impact of phosphogypsum and …
Many industrial by-products have been disposed along coastlines, generating profound marine changes. Phosphogypsum (PG) is a solid by-product generated in the production of phosphoric acid (PA) using conventional synthesis methods. The raw material, about 50 times more radioactive as compared to unperturbed soils, is dissolved in diluted sulfuric acid (70%) …
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Potential Uses of Phosphogypsum and Associated Risks: …
Phosphogypsum: Soil Mixture 1:2 1:1 2:1 Tanner Road (miles)(a) 115 34 0 Windv Hill RoadCmilesV^ 217 101 43 miles = Trans, dollars available 4- tons required x $ 0.10/ton-mile. From this analysis, the economical advantage of using phosphogypsum in roadbed construction is not conclusive, but will depend in great part on the transportation costs. ...
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Environmental impacts of phosphogypsum
The main environmental concerns associated with phosphogypsum are: (i) movement of fluoride, sulfate, total dissolved solids, certain trace elements, and radionuclides …
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(PDF) Phosphogypsum Recycling: A Review of …
The problem of recycling and storage of phosphogypsum is topical for many countries around the world, as it is associated with environmental problems of pollution of water bodies, land, and ...
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Recycling of phosphogypsum to prepare gypsum plaster: …
However, the application performance of phosphogypsum is often significantly inferior to that of natural gypsum due to harmful impurities such as P, F, and organic matter [8][9][10][11][12][13 ...
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A review on the environmental impact of phosphogypsum …
Phosphogypsum (PG) is a solid by-product generated in the production of phosphoric acid (PA) using conventional synthesis methods. The raw material, about 50 times …
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Phosphogypsum
Phosphogypsum is a by-product of the phosphate fertilizer industry. It is generally treated by stacking, which not only causes environmental pollution, but also wastes resources. ... In addition, PG may contain harmful impurities such as phosphorus, mercury, cadmium, and radioactive elements that can be harmful if they enter the atmosphere ...
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TENORM: Fertilizer and Fertilizer Production Wastes | US EPA
Phosphogypsum. Phosphogypsum is the primary waste byproduct of the wet-acid process for producing phosphoric acid. During this process sulfuric acid dissolves phosphate rock creating a solid/liquid mixture (slurry) of phosphoric acid and calcium sulfate (phosphogypsum). The desired phosphoric acid component is separated from the mixture by ...
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Utilization of Phosphogypsum to Prepare High-Purity …
Phosphogypsum (PG), which has great environmental harm and restricts the sustainable development of phosphorus chemical industry, is a solid waste produced in phosphoric acid production. Thermal … Expand
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Piney Point: What is phosphogypsum?
And, that's what is in the phosphogypsum stacks we keep hearing about that could pose a threat if they're released into the environment. According to the EPA, Phosphate rock mining is the fifth ...
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Florida House bill 1191 could put phosphogypsum in roads.
Is phosphogypsum harmful to people? ... Phosphogypsum has been used in agriculture as a source of calcium and sulfur for soil, according to the EPA, but may not exceed 0.37 Bq/g (10 pCi/g). ...
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Potential Phosphogypsum Use
Potential Phosphogypsum Uses. Phosphogypsum 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.
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Phosphogypsum: potential uses and problems – a …
PG, discharged into the sea, watercourses or in wilderness stocks, contains toxic elements harmful to ecosystems and human health, including heavy metals and radionuclides, and there is therefore a concern regarding …
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The treatment of phosphogypsum leachate is more urgent …
Phosphogypsum(PG) is one of the typical bulk industrial solid wastes generated in the phosphate chemical industry. Due to its huge production volume and immature resource treatment technology, a large amount of PG can only be stored and disposed in slag yards, and its impact on the ecological environment is becoming increasingly significant during long-term …
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PHOSPHOGYPSUM: SHOULD WE JUST LET IT GO TO …
Conclusive evidence by independent researchers and research councils challenge the claims that use of the product is harmful and suggests that specific appli-cations be reviewed. It can be …
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Opposition to phosphogypsum in roads
The issue has drawn attention, at least in part, because phosphogypsum includes radioactive elements. It is stored in huge stacks. Opposition to phosphogypsum in roads. Opponents raised questions about the …
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Phosphogypsum Factsheet
Phosphogypsum is the radioactive waste from processing phosphate ore into phosphoric acid which is predominantly used in fertilizer. In addition to radioactive materials, phosphogypsum and process wastewater can also contain carcinogens and toxic heavy metals like antimony, ar-
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(PDF) Phosphogypsum Processing Method
The comparison of the developed phosphogypsum processing method with well-known national and foreign analogues showed that its cost-efficiency is 2-3 times higher; the area necessary for the plant ...
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Phosphogypsum: potential uses and problems – a review
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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Phosphogypsum – An Industrial Byproduct with Value
But around the world, phosphogypsum is increasingly being utilized in beneficial reuse applications, with research around the topic growing. How Phosphogypsum is Produced. Phosphorus is a mineral critical to all life on Earth. As a requirement of all biological beings, it is a cornerstone of nutrition for plants, animals, and people.
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Harmless disposal of phosphogypsum synergized red mud: Harmful …
Phosphogypsum (PG) is discharged from the production process of phosphorus chemicals. ... The soil and groundwater can be contaminated by the strong acidity of PG, which is a serious threat to people's lives [7], [8]. Therefore, it is need to explore new approaches to handle PG on a large scale. ... However, the harmful element and ...
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Phosphate Mining
Now there are plans to tear up more than 50,000 additional acres of central Florida with harmful strip-mining practices — and no plan to address the radioactive phosphogypsum stacks that have already been created. In 2020 the Center sued the Environmental Protection Agency for authorizing the use of phosphogypsum in road construction.
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Potential uses of phosphogypsum: A review
Phosphogypsum (PG) is a by-product of the phosphate fertilizer industry that is produced during the phosphoric acid production process. Annual global PG production ranges between 100 to …
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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. The phosphate ore and the resulting phosphogypsum contain radium, which …
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Phosphogypsum Factsheet
WHAT IS PHOSPHOGYPSUM? Phosphogypsum is the radioactive waste from processing phosphate ore into phosphoric acid which is predominantly used in fertilizer. In addition to …
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Phosphogypsum: potential uses and problems – a review
Abstract. 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. PG, discharged into the sea, watercourses or in wilderness stocks, contains toxic elements harmful to ecosystems and human health, including heavy metals and radionuclides, and there is …
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Harmless treatment technology of phosphogypsum: …
The main component of phosphogypsum is calcium sulfate dihydrate (CaSO 4. 2H 2 O). The existence of bond water of phosphogypsum leads to multiple ways of resource utilization (Gonfiantini and Fontes, 1963; Palacio et al., 2014; Cole and Lancucki, 1972).CaSO 4. 2H 2 O is an environmentally friendly saturated structure. Phosphogypsum is a solid by-product …
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