Soil is among the most important natural resources that can be degraded in varied forms. Soil degradation is a change in the soil's health that reduces its ability to provide goods and services (FAO and ITPS 2015). Population and income growth are expected to necessitate a 70% increase in global food production by 2050 an…
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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 materials, but the amount of phosphogypsum …
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Phosphogypsum is an industrial byproduct generated in the wet phosphoric acid process (Pinto et al., 2020; Jiang et al., 2019; Taher, 2007), and its output accounts for approximately 4-6 times the mass of produced H 3 PO 4 (Kuzmanovic et al., 2021; Yang et al., 2016).The wet process technique is the main method used in acid production (Wang and Jia, …
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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 replace natural …
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Phosphogypsum (PG) is the most significant solid waste in the world. ... The raw material used during the process consists mainly of phos- ... Currently, the main applications of PG, according to ...
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Phosphoric acid is mainly used in the production of phosphorus fertilizers: DAP ... [14]. Currently, in Northern Kazakhstan, PG is used for fertilization ... ation dose caused by phosphogypsum ...
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Phosphogypsum is used in agriculture for soil amendment or as fertilizer, as well as in the brick and cement industry, and in road construction. Phosphogypsum (PG) is a waste product of the...
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Currently, more than 280 million tons of phosphogypsum every year in the world is currently being discarded in coastal areas or elsewhere and stored at production sites as stockpiles, with about ...
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PHOSPHOGYPSUM USE. Phosphogypsum use in a circular economy ... Billions of tonnes of this material are currently being managed at great cost within giant waste stacks. Although gypsum is the main constituent of phosphogypsum, a range of other impurities can also be present, including residual phosphate, fluoride, organic matter, iron, aluminium ...
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As described above, the current industrial solid waste of phosphogypsum is mainly used in concrete that is of low strength grade, which severely limits its uses. So, there is a possibility of developing a kind of high-strength phosphogypsum-based concrete to enable its use in practical engineering, thereby maximizing utilization efficiency for ...
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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 (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 ...
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Currently, phosphogypsum is mainly used for the direct preparation of construction materials and chemical auxiliary materials, but the amount of phosphogypsum used in this process is small, so its ...
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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 replace natural gypsum materials for resource utilization.
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The US EPA currently bans the use of phosphogypsum, except in cases where the material does not exceed an average radium-226 concentration of less than 10 picocuries per gram, and will be used as a soil amendment, according to the Florida Industrial and Phosphate Research Institute. ...
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Phosphogypsum (PG) is a byproduct of the wet manufacturing process for phosphoric acid and is considered an industrial waste material. Around 5 tonnes of PG are generated for every 1 tonne of phosphoric acid production [1].As the phosphorus chemical sector has expanded rapidly in countries like the Middle East, Africa, Russia, the United States, and …
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The use of phosphogypsum for road construction has been suspended because of the short duration of the roadway covering and the possibility of harmful components of phosphogypsum getting into the environment. In addition, the use of phosphogypsum in the construction materials and cement industry has been slowed down by the economic crisis. 2.1.
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In China, the domestic utilization of phosphogypsum is mainly in building materials, industry, and agriculture. As shown in Fig. 4, from 2015 to 2019, in China, phosphogypsum was mainly used in terms of external supply, cement retarder and gypsum board, filling, etc. Thus, China's use of phosphogypsum is still at a low level and low value stage.
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Phosphogypsum (PG) is the major by-product of the wet phosphoric acid industry (Li et al., 2023), which is primarily composed of calcium sulfate dihydrate, along with some impurities including soluble phosphorus, fluorine, and heavy metals (Ou et al., 2023).Approximately 4–5 tons of PG are generated from the production of phosphoric acid per …
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The natural gypsum is mainly used as a cement manufacturing retarder [1,2,3], while ... currently there is a great interest in using PG after the removal of impurities as an alternative raw ... M.S. Assessment of the radiological impacts of treated phosphogypsum used as the main constituent of building materials in Jordan. Environ. ...
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Phosphogypsum circular economy considerations: A critical review from more than 65 storage sites worldwide ... which is a key ingredient in fertilizer. It is mainly found in marine sedimentary deposits, igneous rocks, and guano. ... it is noteworthy that in case of fresh PG changes in the current phosphoric acid production processes (sulfuric ...
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Although Phosehogypsum (PG) the quantities of aggregate used in load-bearing surfaces such as parking lots, container storage All phosphogypsum used in this study was furnished yards, and so forth, is presently not definable, it by Mobil Chemical Company {MCC) of Pasadena, Texas. is possible to say that this application is a poten Presently ...
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Phosphoric acid is mainly utilized in the fertiliser industry to produce the phosphorous fertilisers monoammonium phosphate (MAP) and diammonium phosphate …
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The current status, limitations, and development of resource utilization of PG in building materials are reviewed. ... Poland and South Africa developed the co-production of sulphuric acid and cement from natural gypsum, hard gypsum and phosphogypsum [11]. PG was used in Japan in 1930s [12], it is mainly used to produce gypsum building ...
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However, the utilization of PG still mainly relies on basic utilization methods, such as being used as a cement retarder, in building materials, for road construction, or mine filling, currently (Cui et al., 2022).Due to factors such as limited regional market demand, low product added value, and restricted transportation radius, relying solely on PG-based building …
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The field of REE applications is extensive and their demand is high and mainly dominated by the magnetic, catalytic, metallurgical and polishing industries as shown in Figure 1 . From their initial time of discovery, the utilization of REEs has developed from mischmetal to high purity separated REE metal used in current advanced technologies.
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Five clusters were formed: a red cluster-phosphogypsum recycling in the construction industry; green cluster-radiation pollution problem of phosphogypsum and phosphate fertilizers; yellow cluster ...
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Although phosphogypsum is still generally disposed of as waste, industry attitudes are changing and greater use of phosphogypsum will be expected in a circular economy. The …
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This study contributes to sustainable construction practices by exploring the use of phosphogypsum, a commonly discarded byproduct, in the production of recycled aggregates. Addressing both environmental and …
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product. Due to the complex and harmful impurity components, phosphogypsum cannot be directly used. At present, the global phosphogypsum accumulation has reached 6 billion tons and is still growing at 150 million tons per year. China is a by-product country of phosphogypsum. How to use phosphogypsum efficiently has become a big problem in China.
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