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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Phosphogypsum (PG), a byproduct during the phosphoric acid production process, also known as the wet process, contains complex and diverse impurities, resulting in low utilization and considerable accumulation. This leads to a massive waste of land resources and a series of environmental pollution problems. Given the current urgent ecological and …
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Nowadays, a large amount of phosphogypsum (up to 200 million tons) is disposed by open-air stacking or landfill, and the stockpiled phosphogypsum will form a considerable amount of leachate with a high concentration of harmful substance under the effects of rainwater leaching and erosion (Wang et al., 2019; Meng et al., 2022).
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Significant environmental issues are raised by the phosphogypsum (PG) waste that is being produced. In Lithuania, about 1,500,000 tons of PG waste is generated yearly, and about 300 Mt is ...
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Phosphogypsum is a waste from the phosphorus chemical industry which has certain environmental hazards. Using it as a substitute for building materials was thought to alleviate the problems of phosphogypsum pollution …
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The mechanical pressing method can effectively seal the toxic and harmful substances in the waste gypsum and prevent them from releasing. ... To reduce the environmental risk of phosphogypsum lumps, the six most representative samples were selected for leaching toxicity analysis, namely: 300 MPa pressed and maintained 3 d phosphogypsum …
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The phosphogypsum-based cemented paste backfill (PCPB) in the mining goaf has been in the mine water environment for a long time, and its rich toxic and harmful elements have the risk of migrating and diffusing to the surrounding rock, polluting groundwater. The occurrence environment of underground space in mines is complex, and the filling body is …
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Phosphogypsum (CaSO 4 ·2H 2 O) (PG) is a kind of industrial solid waste numerously produced in the wet-process phosphoric acid production process (reaction between H 2 SO 4 and phosphate rock) (Li et al., 2020, Hu et al., 2021, Long et al., 2020, Chandra et al., 2017, Wang et al., 2021). Industrial by-product waste residue is a kind of renewable resource …
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The simulation of mechanical pressure of mineral formation seals and solidifies toxic and harmful substances in solid waste generated by mining and chemical industry [20], improving the resource utilization rate of solid waste with high added value and reducing environmental risks, thus becoming an important means of bulk solid waste treatment ...
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The harm of gypsum to the environment was mainly caused by heavy metal elements of As, Cd, Cr, Hg. Using the risk exposure model recommended by the United States Environmental Protection Agency, it was found that there were carcinogenic risks for adults and children in soil intake due to As and Cr pollution.
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Phosphogypsum slag-based composite cementitious materials were prepared by using phosphogypsum and slag powder as ... radioactive substances that are harmful to the ecological environment [3, 7, 8]. After appropriate preprocessing, phosphogypsum can be utilized in the fields of cement retarder, raw materials for cement-based materials ...
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Phosphogypsum (PG) is a byproduct of the wet manufacturing process for phosphoric acid and is considered an industrial waste material. ... weathering processes, causing significant harm to the environment (pollution with chemicals and radiation) (Fig. 1), and particularly along the seaside [2].
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Phosphogypsum (PG) is an industrial by-product of a wet process for phosphoric acid production in phosphorus chemical enterprises [1].Every ton of phosphoric acid generates about 5 tons of PG [2], containing predominantly CaSO 4 ·2 H 2 O, accounting for over 90% of the content. In addition, trace amounts of fluorine, phosphorus, oxides, organic matter, radioactive …
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Phosphogypsum is a kind of acidic industrial byproducts with high content of soluble phosphorus and fluorine pollutants, which requires to be pretreated when used as cementitious material to (partial) replace traditional Portland cement. In this study, five different pretreatment methods were proposed for comparative analysis to examine the pretreatment …
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We also review how incidental NPs of PG impact the global environment, especially with respect to the distribution of rare earth elements (REEs), toxic elements such as As, Se, and Pb, and …
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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.
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Phosphogypsum (PG) is a by-product produced during the wet process of phosphoric acid (H3PO4) production from natural phosphate rocks. Approximately 4–6 tons of PG is produced per ton of ...
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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).
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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 …
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"The well-documented harm to public health and the environment from this kind of waste leaking out of radioactive phosphogypsum storage stacks should be leading to better oversight of Florida ...
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Phosphogypsum is one of the hottest issues in the field of environmental solid waste treatment, with complex and changeable composition. Meanwhile, phosphogypsum contains a large number of impurities, thus leading to the low resource utilization rate, and it can only be stockpiled in large quantities.
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Seventy phosphogypsum stacks are scattered throughout the United States, concentrated in low-wealth and Black, indigenous, and people of color communities. These radioactive waste …
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@article{Li2024StudyOT, title={Study on the leaching of harmful elements and pore characteristics of phosphogypsum-based cemented paste backfill under multi-field coupling interaction}, author={Yufei Li and Nan Yao and Yicheng Ye and Wenchao Guan and Menglong Wu and Guan Chen}, journal={Environmental Earth Sciences}, year={2024}, url={https ...
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The impurities in phosphogypsum and its harm to the environment were introduced, and the advantages and disadvantages of the widely used pretreatment methods were analyzed in this paper. The application of phosphogypsum in the fields of cement retarder, building materials, agriculture, the production of sulfuric acid co-production cement, soil …
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Phosphogypsum (PG) is a major hazardous by-product of the phosphate industry. The whole world is facing the challenge of increasing stockpiles of PG, which significantly …
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Chinese cabbage (Brassica pekinensis (Lour.) Rupr.) is rich in many vitamins and many minerals and is an important green vegetable in people's daily diet. Soil heavy metal Cd content exceeding safe values has a toxic effect on the growth of vegetables, which seriously affects human health. Biochar can effectively stabilize heavy metals in polluted soil, and …
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Soluble P 2 O 5 and fluorine in phosphogypsum can jeopardize the environment and even human health. The application in building materials is a pathway to consume phosphogypsum on a large scale. ... The environmental pollution caused by the harmful elements contained in PG and RM is a problem that is difficult to be ignored in the process of the ...
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Environmental advocates have long raised alarm about the environmental hazards created by the fertilizer production process, including phosphogypsum, a byproduct of the fertilizer production.
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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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The earliest studies generally focused on the use of cement or lime to stabilize different types of soils and then use the stabilized soil in road materials [11].This is due to the fact that both cement and lime are common sources of calcium, and soil is stabilized mainly through cation exchange and flocculation processes.
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"Environmental impact and management of phosphogypsum" has accumulated the most citations, totaling 559. Consequently, the presence of heavy metals, PO4 3-, and F-in phosphogypsum has garnered increasing scholarly attention in recent years, underscoring a vital aspect of PG's comprehensive utilization.
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Future research should delve deeper into how phosphogypsum leachate disrupts the homeostasis of the liver-gut axis. The current study will provide valuable evidence for the harmful effects of phosphogypsum leachate on aquatic environment and promote the assessment of the potential environmental risks associated with leachate.
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PO 4 3-and F-are harmful to both humans and the environment. Additionally, the large-scale storage of PG has led to pollution of both groundwater and air [2], [3]. ... both of which met the specification requirements for Standard for Phosphogypsum (GB/T 23456–2018) in China [24]. The CS was ground to below 80 ɥm and mixed with PG.
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Tunisia is currently faced with the extremely delicate problem of managing the millions of tons of phosphogypsum (PG) discharges which is already causing considerable environmental damage. The research carried out in this work is part of a geochemical assessment of the level of heavy metal contamination in phosphogypsum waste from the Mdhilla region …
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Phosphogypsum stacks, byproducts of phosphate fertilizer production, have garnered attention due to their environmental and health implications. These mounds are …
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