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 …
Florida Water Emergency: The Piney Point Phosphogypsum …
The phosphorus and nitrogen in the water are poised to spur harmful algal blooms, such as red tide and brown algal blooms, which can cause fish kills, poison shellfish …
Florida 'radioactive roads' bill signed into law | khou
The waste that is left behind is phosphogypsum. Most of the naturally occurring uranium, thorium and radium found in phosphate rock ends up in this waste, the EPA says.
(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 ...
Guest Op/Ed: Phosphogypsum and Radiation
Phosphogypsum stacks are located in Louisiana, Idaho, Illinois, North Carolina, Arkansas and Florida. Phosphate companies have dumped in excess of 900 million tons of radioactive wastes in Florida and are producing over 30 million tons of phosphogypsum waste annually, as the industry continues to expand its dumping operations.
'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.
RADIOACTIVE ROADS
Bottom line: Using radioactive phosphogypsum in roads is dangerous and isn't a solution to the fertilizer industry's toxic waste problem. It's time to hold the industry accountable for the waste …
Properties, Purification, and Applications of Phosphogypsum: …
Approximately 4–6 tons of PG is produced per ton of phosphoric acid production, where worldwide PG generation exceeds 300 million tons annually. The vast majority of …
Radioactive Material From Fertilizer Production
Phosphate rock contains small amounts of naturally-occurring radionuclides, mostly uranium and radium. When processing phosphate rock to make fertilizer, the phosphorous is removed by dissolving the rock in an acidic …
EPA withdraws rule allowing use of radioactive material in …
Between 1989 and the Trump-era rule, the EPA required that all phosphogypsum be stored in "stacks" that experts and activists said would release dangerous amounts of radon …
Studying the Process of Phosphogypsum Recycling into a …
1. Introduction. The current level of production throughout the world is directly related to the global use of natural resources and the accumulation of large-tonnage technogenic waste [1,2,3].This is a reality that must be considered; even an essential technically advanced industrial complex, if its impact on nature extends beyond environmentally acceptable limits or …
Recovery and recycling core of phosphogypsum: …
Phosphogypsum(PG) is a solid waste produced by wet-process phosphoric acid.However, the heavy metals and other pollutants contained in PG have not been controlled in the process of resource utilization, and there are potential risks to the ecological environment and human health.In this paper, the basic physical and chemical properties (XRD, XRF, FTIR,TGA …
RADIOACTIVE ROADS
The EPA has also found that using phosphogypsum in roads can harm nearby water resources through the leaching of trace metals and radioactive particles called radionuclides. These toxic bits of matter can also get into the air — where people and animals can breathe them in — via wind and vehicle traffic.
Unveiling the organic nature of phosphogypsum : …
Phosphogypsum (PG) remains the primary mismanaged radiochemical waste by-product of the phosphate fertilizer industry globally [41], ... Through various and different pathways, people living in the vicinity of this coastal zone are chronically exposed to the toxic radiochemical pollutants of PGF (trace elements, radionuclides, rare earth ...
Florida Water Emergency: The Piney Point Phosphogypsum Crisis Unfolding
UPDATE 04/08/2021: The immediate human threat may have passed, but the environmental threat is just rearing its head. We may no longer be looking at a catastrophic event at Piney Point, where just days ago we were facing the threat of a 400 million gallon immediate release that could have sent a 20-foot wall of toxic water hurtling through neighborhoods and across highways.
Removal of fluoride ions from wastewater via simple low …
Modified phosphogypsum (PG) was prepared via low-temperature thermal decomposition to remove fluoride ions from wastewater. This study discussed the effect of heat treatment (pyrolysis temperature and time) and operating conditions (initial fluoride ions concentration, dosage, solution temperature, and initial pH) on fluoride ions removal efficiency.
Effect of calcium sulfoaluminate cement on the hydration …
Phosphogypsum is a solid waste generated in the wet process ... energy consumption and CO₂ emissions. Furthermore, Phosphogypsum slag cement has been shown to effectively immobilize harmful heavy metals like lead and ... National Development and Reform Commission of the People's Republic of China, Ministry of Finance of the People's ...
Citing "toxic mountains," conservation groups file notice of …
The advocacy groups represent people in multiple states who live near the manmade dumps that store massive amounts of a radioactive substance called phosphogypsum, which is generated in the process of creating phosphoric acid for fertilizer. ... Since the 2021 petition filed by the conservation groups, the dangers of the phosphogypsum …
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. Today, science tells us a different story. ... Science once told us that PG must be stacked and stored away from people, but after more than 30 years of research ...
What is the Difference Between Gypsum and Phosphogypsum
Gypsum and phosphogypsum are similar chemically, except that phosphogypsum has trace elements of radioactive substances in it. Gypsum and phosphogypsum are used mainly in the construction industry, but due to its radioactivity, phosphogypsum has limited uses, unlike gypsum. FAQ: Gypsum and Phosphogypsum 1. Is …
E-DOCKET: EPA-HQ-OAR-2020-0442
2 Executive Summary: This document details the review performed by the U.S. Environmental Protection Agency, Office of Radiation and Indoor Air, Radiation Protection Division, in response to the Radiological Risk Assessment in Support of Petition for Beneficial Use of Phosphogypsum prepared for The Fertilizer Institute (TFI) (Arcadis 2019).
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). ...
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.
Use of phosphogypsum in road construction
with industrial utilisation of phosphogypsum is its huge amounts, resulting from the high capacities of wet process orthophosphoric acid plants. Another problem is the public belief that phosphogypsum is detrimental to human health and the environment. In recent years there has been a growing tendency to look upon phosphogypsum as a valu-able ...
Phosphogypsum Stacks
Phosphogypsum Stacks. America is blessed with abundant low-cost natural gypsum. There is also an abundance of flue gas desulfurization gypsum produced as a by-product of coal-fired power plants. As a result, the market for the phosphogypsum generated by the chemical processing of phosphate rock has traditionally been limited. ...
Harmless disposal of phosphogypsum synergized red mud: Harmful …
Phosphogypsum (PG) is discharged from the production process of phosphorus chemicals. ... 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 radionuclides contained in PG can cause incalculably hazardous to the environment [17 ...
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 decays to form radon gas. Both radium and radon are …
Coalition targets U.S. EPA over phosphate regulations
A coalition of groups Tuesday moved toward filing a lawsuit against the U.S. Environmental Protection Agency over regulation of phosphate-industry waste that the groups say poses environmental and ...
The treatment of phosphogypsum leachate is more urgent …
The harm of toxic and harmful elements in the leachate will ultimately indirectly affect human life and health safety. The source of the arsenic pollution incident in Yangzonghai, China, comes …
OPINION: Phosphogypsum is not...
OPINION: Phosphogypsum is not necessary for building roads, and decades of science prove that it poses substantial risk to people's health, workers' safety and the environment. Yet, House Bill 1191...