Utilization of high-volume phosphogypsum in artificial aggregate by compaction granulation: effects of muck on physical properties, strength and leaching stability Wei Chen a State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, PR China;b Hubei Three Gorges Laboratory, Yichang, …
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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 …
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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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Following a comprehensive literature search, it was determined that PG could be utilized in the construction industry. Several studies have been performed on using PG in building materials such as bricks, concrete and other materials. ... Utilization of weathered phosphogypsum as set retarder in Portland cement. Cement Concr Res, 34 (2004), pp ...
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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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1.1. Physical and Chemical Properties of PG. PG is usually a yellowish-white, light grayish-white, or dark gray fine powdery particle that is acidic (pH 2.37~5.33), whose micromorphology is mainly of a rhombic flake [].The main component of PG is CaSO 4 ·2H 2 O (mainly > 80 wt%). The chemical compositions of PG in different regions are …
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Phosphogypsum (PG) is a solid waste produced from decomposition of phosphate rock in sulfuric acid. It can improve the physicochemical properties of soil.
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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 contains radium, which decays to form radon gas. Both radium and radon are radioactive and can cause cancer. The Clean Air Act regulations require that phosphogypsum be managed in …
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Fig. 2 shows the number and growth trend of published literatures in the field of phosphogypsum resource utilization from 1985 to 2020. As shown in Fig. 2 a, after …
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Phosphorus ore flotation tailings (POFTs) are an industrial solid waste generated in the process of phosphate mining, which contains a large number of Mg, Ca, and P resources. The sources, storage, …
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) and phosphogypsum in China during 2000-2015. a Some data were cited from references of [9-13]. 3. Distribution of phosphogypsum in China In 2014, total phosphate fertilizers (as P 2 O 5) production in China was 17.09 Mt. The aggregate production in Yunnan, Guizhou, Sichuan and Hubei provinces was 12.53 Mt, accounting for 73.3% of
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Because of its low whiteness, complex composition, radioactivity and high impurity percentage, the usage of phosphogypsum (PG) resources is limited. A theoretical foundation for upgrading and bleaching PG can be obtained by researching the presence and status of impurities in the material and its symbiotic connection with gypsum. This …
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In this work, comprehensive utilization of phosphogypsum was developed. Methylene blue () in aqueous solution was adsorbed by waste phosphogypsum (PG), and then the -adsorbed PG was used to ...
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As a typical solid waste, phosphogypsum (PG) is the by-product generated during the exploitation of phosphate resources 1,2,3. Global production of PG is estimated to be around 100–280 Mt ...
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Summarized both domestic and foreign methods of comprehensive utilization of phosphogypsum, such as being made into calcium sulfate whisker, building materials, soil improvement agent, chemical ...
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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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Gypsum with Yunnan Phosphogypsum . Chen-Xi DU. 1,a,*, Zhi-Man ZHAO. 2,b, Shuai LI. 3,c, Zhi-Yu LIU. 4,d. 1. Faculty of Civil Engineering and Architecture, Kunming University of Science and Technology, ... The impurities affects the comprehensive utilization of phosphogypsum, such as
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Figure showing the utilization of phosphogypsum in China from 2010 to 2019 (Source: National Bureau of statistics of the People's Republic of China). Figure modified from. ... The situation and countermeasures of comprehensive utilization of phosphogypsum in China. Phosphate & Compound Fertilizer, 35 (2020), pp. 1-3. View …
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1. Introduction. 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 …
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phosphogypsum comprehensive utilization . 2 . Chao-qiang W ang 1,2,3,4, De-ming Xiong 5*, Y u Chen 3,Kai Wu 6*, Pei-xin W ang 7,Zhao-ji Zhang 8*, Lei . 3 . Zhou 1. 4 .
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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 economic aspects of sustainability, we investigate the feasibility of employing phosphogypsum as a primary raw material, in …
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Introduce several examples of surface active agents used in wet-process phosphoric acid (WPPA) to show its effect on the quality of phosphogypsum. Summarized both domestic and foreign methods of comprehensive utilization of phosphogypsum, such as being made into calcium sulfate whisker, building materials, soil improvement agent, chemical …
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Phosphogypsum (PG) is the primary byproduct generated during the production of phosphoric acid, an intermediate product in phosphate fertilizer production, …
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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), 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. ... and broadening the comprehensive utilization ways of PG are significant strategies to promote the sustainable consumption …
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Research hotspots and trends of comprehensive utilization of phosphogypsum: Bibliometric analysis. Zhongqi Wei, Zhengbin Deng, in Journal of Environmental Radioactivity, 2022. Abstract. Phosphogypsum is a by-product of the phosphate fertilizer industry. It is generally treated by stacking, which not only causes environmental …
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improving the harmless comprehensive utilization rate of phosphogypsum resources are of great significance to the sustainable and healthy development of the phosphorus chemical industry.
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A variety of co-existing impurities in phosphogypsum limit its large-scale and high-value utilization. This paper summarizes the common contents of major impurity components (silicon and phosphorus) and trace impurity components (fluorine, iron, aluminum, and carbon) in phosphogypsum and discusses the harm of impurity …
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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 …
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