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The elemental and radioactive characterizations of phosphogypsum and the phosphate rock used as raw material in industries A and C are presented in Table 1, Table 2, Table 3.Although the origin of the two rocks is the same, both are extracted from do Catalão I carbonatite complex, located in central Brazil, their composition is slightly …
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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 potential hazards of using phosphogypsum, including whether it could harm people working on roads and …
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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 affect safety and the environment. ... However, only 15% of global PG resources (Wu et al., 2022a) are used in agriculture, construction and chemicals.
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PDF | On Jan 23, 2021, Suneetha Devi Kanala published Growth and yield of Rabi groundnut as influenced by Irrigation scheduling and phosphogypsum levels | Find, read and cite all the research you ...
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Abundant of research investigations have been conducted to utilized the waste or chemical gypsum, phosphogypsum for various applications. Most of the research investigations were carried out by purifying phosphogypsum for the impurities present in it and then its utilization were suggested. In another research approach phosphogypsum could be …
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This article reviews the physical-chemical properties and environmental impacts of phosphogypsum (PG), a byproduct from phosphate fertilizer production. It also discusses the challenges and opportunities of PG reuse and management in a circular …
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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 phosphogypsum with an average radium-226 concentration of less than 10 picocuries/gram (pCi/g) for agricultural application as a soil …
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Phosphogypsum (PG) samples from four distinct sources in the Southeastern US were analyzed to explore the variation in total metal content between newly generated (fresh) PG and PG disposed of in phosphogypsum stacks for different lengths of time (stack). Fresh PG exhibited greater total metal conce …
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The obtained results suggest that the impact of the phosphogypsum stack on the Martwa Wisła waters is rather insignificant and does not affect significantly the Mart wa WisłA river. The aim of this work was to determine the concentrations of uranium (234U, 235U, 238U), polonium (210Po) and lead (210Pb) radioisotopes in water samples and to …
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An experiment with the objective of evaluating performance of phosphogypsum as nutrient source in groundnut was conducted at Zonal Agricultural Research Station (ZARS), Gandhi Krishi Vignana Kendra (GKVK), University of Agricultural Sciences (UAS), Bangalore, in the Eastern Dry Zone (Zone - V) of Karnataka with a …
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Phosphogypsum can be used as a conditioner to improve the physical and chemical characteristics of soil, delay soil degradation, and passivate heavy metals to …
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Additionally, several books published by the IAEA were used as a source of summarised data. Physico-chemical characteristics of phosphogypsum Phosphogypsum is a grey, damp, fine-grained material (silty or silty-sandy) with a maximum grain size between 0.5 and 1.0 mm and 50–75 % of particles finer than 0.075 mm ( 6 ).
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Phosphogypsum is a by-product originated from wet-process phosphoric acid, which contains some impurities such as soluble phosphorus, soluble fluorine, some salts, heavy metals and organic compounds, which lead to difficulty to be used. Jillion phosphogypsum accumulated not only occupies land, pollutes the circ。umjacent …
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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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Phosphogypsum (PG) is the primary byproduct generated during the production of phosphoric acid, an intermediate product in phosphate fertilizer production, from calcium phosphate (apatite) ore. PG also exists in very small amounts in nature where it is the result of natural guano processes as they took for instance place in the …
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1. Introduction. Nanoparticles (minerals, organic and/or inorganic amorphous phases, and complex mixtures) are of great environmental relevance with respect to the life on our planet and the quality of the atmosphere (Hochella et al., 2008, 2019).Nanoparticles (NPs) are global carriers of minor elements (both nutrients and toxins) and play an …
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Efficacy of phosphogypsum and magnesium sulphate as ... Journal of Crop and Weed 7(1):133-135 (2011) Efficacy of phosphogypsum and magnesium sulphate as sources of sulphur to sesame (Scsanzunz indicunz L.) in red and lateritic soils of West Bengal
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Phosphatic clay was a good source of potassium and magnesium, and dolomitic limestone was a good source of magnesium. In field experiments, one ton per acre of dolomitic limestone, or a two inch layer of sand tailings or overburden, applied to the surface of phosphogypsum and rototilled, enhanced plant establishment. ... Vegetation cover on ...
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Sources of sulphur vary depending on the soil type. Among these sources, gypsum, SSP and ammonium sulphate are cheaper. Most of the black soils in Northern Karnataka with arid climate are rich in free calcium and the sulphur nutrient element is render less available to the growing plant. The quantity applied is very less
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IV. WATER RESOURCES IN KARNATAKA Water resources of Karnataka primarily constitute surface and groundwater. Rainfall is the basic source of water in the state. A. Surface water It is available in Karnataka in the form of rivers, lakes, waterfalls, reservoirs, etc. Karnataka has surface water potential of around 102 km. Being the seventh largest
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Phosphogypsum is a radioactive waste from phosphate ore processing. Learn about the EPA's regulations, the approved and pending uses of …
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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 phosphoric acid production, where worldwide PG generation exceeds 300 million tons annually. The vast majority of produced PG is discarded …
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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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1. Introduction. Phosphogypsum (PG), a significant Technologically Enhanced Naturally Occurring Radioactive Material (TENORM) (IAEA, 2003), is a by-product of phosphoric acid production from rock phosphate – a process that underpins inorganic P fertiliser production for agriculture.Global food production is currently …
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Phosphogypsum (PG) waste is a by-product generated from wet-process phosphoric acid (H 3 PO 4) manufacturing during phosphate rock decomposition.Worldwide, the annual production of PG ranges between 100 and 300 million tons, with only a few quantities utilized in several application domains (about 15%), the …
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1. Introduction. Phosphogypsum (PG) is a bulk industrial solid waste of wet-process phosphoric acid production. Every ton of phosphoric acid production generates as many as 4–6 tons of PG, including more than 90% of CaSO 4 ·2H 2 O, a small amount of phosphorus, fluorine, organic matter, oxides, heavy metals, radioactive substances …
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Determine the physical, chemical, and radioactive properties of phosphogypsum. Discuss the uses of phosphogypsum in agriculture as a fertilizer, …
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The waste product phosphogypsum (PG) is produced in phosphoric acid production processes. Its storage requires large amounts of land resources and poses serious environmental risks. In this work, … Expand
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The Oman Daily Observer newspaper has reported that India received 4.84Mt (49%) of Omani gypsum exports during the year. This accounts for 87% of the …
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The impact of adding phosphogypsum (PG) to freshwater wetland areas, and potential effect on methane production and respiration in sediment was studied in the laboratory. ... Register to receive personalised research and resources by email. Sign me up. Taylor and Francis Group Facebook page. Taylor and Francis Group X Twitter page.
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