Application of phosphogypsum in soilization: a review
Phosphogypsum (PG) CaSO 4 ·2H 2 O is a by-product of phosphate ore processing, phosphate fertilizer and compound fertilizer containing phosphorus, …
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Phosphogypsum (PG) CaSO 4 ·2H 2 O is a by-product of phosphate ore processing, phosphate fertilizer and compound fertilizer containing phosphorus, …
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Phosphogypsum (PG) is solid waste generated by the phosphate fertilizer industry. However, by high-temperature thermal treatment, it can be effectively decomposed into byproducts like SO 2 and CaO, which are valuable raw materials for the production of sulfuric acid and construction materials, respectively. In this study, we investigated the …
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Phosphorus (P) is an essential element for life, our current food production system, manufacturing industries, and general economic growth (Withers et al. 2015 ). P is a key limiting factor for plant growth and is therefore one of the three main elements (N:P:K) in fertilizers. The demand for phosphate fertilizers has grown over the last years ...
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This slurry presents a mixture of phosphogypsum (PG) which is calcium sulfate dihydrate crystals CaSO 4.2H 2 O, and phosphoric acid 29% in P 2 O 5 in addition to other some impurities occurred from crude phosphate.. The production of phosphogypsum has significantly increased as a result of recent phosphate industry …
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Most of the phosphogypsum used in the production of Fig. 2 came from the RSA Mart Kanpur in the Indian state of Uttar Pradesh. RSA Mart's Phosphogypsum is available in an off-white hue. Phosphogypsum (Phosphate of Gypsum) powder is white and has a specific gravity of 2.3 % to 2.6 %. The purity of phosphogypsum is 85 %.
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Phosphogypsum (PG) is a bulk industrial solid waste of wet-process phosphoric acid production. Every ton of phosphoric acid production generates as …
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Abstract Phosphogypsum (further PG) is a by-product obtained from the production process of the phosphate fertilisers. It is produced in enormous quantities, but only 15% of it is recycled. The remaining part is stored in large stockpiles or in water bodies. The harmful water–soluble impurities present in PG composition cause serious …
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The water migration process of phosphogypsum-based UHPC is presented. •. The microstructure of phosphogypsum-based UHPC is clarified. This …
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The working phosphogypsum waste is a byproduct obtained from the production of wet process phosphoric acid from rock phosphate at the El Nasr Co. for Intermediate Chemicals on Fayoum City, Egypt. It is a gray colored, damp, fine-grained powder, silt or silty-sand materials. It is mainly CaSO 4 ·2H 2 O with small amounts of …
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Nearly 300 million t of phosphogypsum (PG) are produced every year as a byproduct from phosphate fertilizer production worldwide. Approximately 58% of the PG …
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Phosphogypsum (PG) is a major industrial by-product of wet process phosphoric acid production, and untreated PG stockpiled on land will cause severe environmental pollution. Thermal treatment of PG is currently the mainstream treatment method PG can be thermally decomposed to produce CaO, and the decomposition …
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1. Introduction. Phosphogypsum (PG) is a solid waste produced during the wet production of phosphoric acid in the phosphate fertilizer industry, and its main component is CaSO 4 ·2H 2 O or CaSO 4 ·0.5H 2 O [1,2,3].In the wet phosphoric acid production process, about 5–6 tons of phosphogypsum are discharged for every ton …
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Phosphogypsum (PG) is an industrial by-product of the transformation of phosphate rocks. For decades, PG has been a source of environmental concern due to the massive amount produced thus far, i.e., 7 billion tons, with a current production rate of 200–280 million tons per year. Phosphate minerals contain various impurities that …
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Phosphogypsum is a byproduct produced in the wet phosphoric acid production process. Statistics show that the current global stockpile of phosphogypsum has exceeded 6 billion tons, and it continues to grow at a rate of about 200 million tons per year. ... Therefore, there is a larger void ratio between the phosphogypsum particles. …
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The gas sulfur reduction of phosphogypsum in the acid co-production of sulfoaluminate cement clinker is a new process for treating phosphogypsum. The reduction furnace of this system was studied and … Expand
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Phosphogypsum is one of the industrial by-products of wet-process phosphoric acid productions, that producing one ton of phosphoric acid can bring 4–5 tons of phosphogypsum. The annual production of phosphogypsum from the phosphorus fertilizer industry worldwide is about 300 million tons 1. An amount of hoarded …
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Powder Production Process. Phrase one: raw material crushing. Phosphogypsum blocks will be crushed to 15mm-50mm fineness by crusher. Phrase …
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Semantic Scholar extracted view of "Highly efficient modified phosphogypsum building gypsum powder and environmentally friendly utilisation in self-levelling mortar" by Chao-qiang Wang et al. ... Journal of Cleaner Production. 2023; 6. Save. ... The Generation Process, Impurity Removal and High-Value Utilization of …
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Phosphogypsum is the major component in solid waste of phosphoric acid manufacturing. ... activation temperature and H 2 SO 4 concentration were optimized for this process. Moreover, powder X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectrometer (XPS) and inductively coupled …
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Phosphogypsum, a waste product from manufacturing fertilizer, emits radon, a radioactive gas. It also contains the radioactive elements uranium, thorium and radium. Phosphate rock mining is the fifth largest mining industry in the United States in terms of the amount of material mined. The phosphate industry is concentrated in the …
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Phosphogypsum is an industrial by-product of phosphoric acid production by a wet process in phosphorus chemical enterprises and one of China's most important industrial wastes [2].There are hundreds of chemical fertilizer enterprises in Hubei, China, among which the phosphogypsum in the production process of chemical fertilizer, …
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Phosphogypsum (PG) is a calcium sulphate dihydrate and a by-product of the phosphate fertilizer industry. It is produced in huge quantities (300 MT/year), but only 15% of the PG produced is recycled. ... Moreover, PG can be recycled in the manufacturing process of fertilizers either as a substitute of acids or as a source of …
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set at 5°–90° and the scanning speed was set at 10°/min. e speci c production process o f the sample is as follows: to begin with, the material is made and molded accor ding to the steps and ...
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Phosphogypsum is a solid waste byproduct from processing phosphate ore to make phosphoric acid that is later used in fertilizer. ... Phosphogypsum stacks additionally contain low-pH process water and heavy metals as a result of the wet acid fertilizer production process. The regulations at 40 CFR 61 Subpart R require …
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As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological …
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Phosphogypsum (PG) is a solid grey, moist, fine-grained by-product powder generated during the production of phosphoric acid which has the chemical formula H 3 PO 4 through the digestion of ...
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Phosphogypsum is one of the industrial by-products of wet-process phosphoric acid productions, that producing one ton of phosphoric acid can bring 4–5 …
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Phosphogypsum is a waste by-product from the processing of phosphate rock in plants producing phosphoric acid and phosphate fertilizers, such as superphosphate. The wet chemical phosphoric acid treatment process, or 'wet process', in which phosphate ore is digested with sulfuric acid, is widely used to produce phosphoric acid and calcium …
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1. Introduction. Phosphogypsum (PG) is the main solid waste in the phosphorus chemical industry. In the wet process production of phosphoric acid, which is a mainstream process of the phosphorus chemical industry, 4.5–5.5 tons of PG is emitted for each ton of P 2 O 5 production [1], [2], [3].The PG is mainly composed of dihydrate …
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Phosphogypsum (PG) is a solid waste product generated during wet-process phosphoric acid production. Various impurities considerably reduce the …
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Global phosphogypsum production is estimated to be around 280 million tonnes per year, with 28% of it disposed into water bodies, and 58% of it stored in tailing …
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Abstract. 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. These impurities can restrict the reuse of phosphogypsum as a secondary …
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Phosphogypsum is one of the industrial by-products of wet-process phosphoric acid productions, that producing one ton of phosphoric acid can bring 4–5 tons of phosphogypsum. e annual production ...
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