2.1 Raw materials. The materials used in the study were phosphogypsum and iron tailings powder, which were sourced from Lianyungang in Jiangsu province. The chemical compositions of these materials were determined by X-ray fluorescence (XRF), which showed that the main chemical elements present were silicon, oxygen, aluminum, …
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The application of phosphogypsum in building materials can consume waste phosphogypsum and reduce ecological pressure. In this study, building phosphogypsum was used as the base material, …
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CSWs can be used in highway engineering, such as asphalt modification, to improve the performance of modified asphalt, thus greatly increasing the utilisation of PG and CSWs and promoting solid waste reuse. ... Demirel Y., Caglar Y. Recovery of phosphogypsum in economy in building materialwaste. J. Fac. Eng. Architect. Gazi …
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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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For example, phosphogypsum from Central Florida has an average of 26 pCi/g radium, and that from North Florida has 10 pCi/g radium. An exception is made for phosphogypsum with an average concentration of less than 10 pCi/g radium, which can be used as an agricultural amendment, but not for other purposes . It is important to …
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DOI: 10.1016/j.jclepro.2023.135858 Corpus ID: 255730233; Resource utilization and development of phosphogypsum-based materials in civil engineering @article{Qin2023ResourceUA, title={Resource utilization and development of phosphogypsum-based materials in civil engineering}, author={Xiantao Qin and Yiyao …
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In order to confirm the feasibility of the use of a new material mainly composed by phosphogypsum, an experimental house was built, having some of its rooms entirely lined with this material.
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The concentrations of these elements vary between the regions and the processes used, all of which require particular and specific follow-up after the release of PG and during its use. Phosphogypsum …
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Beta-hemihydrate phosphogypsum (β-HPG) as a cementitious material obtained from the dehydration of phosphogypsum (PG) can be widely used for the preparation of building materials.
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The work by Zemni et al. [44] provides a study on the generation of calcium silicate and sodium sulphate, through the chemical reactions between phosphogypsum and sodium silicate.The results showed that the solid produced during the reaction can sequester CO 2.Rashad [17] assessed the effect of PG on properties such as …
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The radiation dose resulting from phosphogypsum piles or received by workers is negligible compared with the average annual effective dose from natural …
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Abstract Phosphogypsum (PG) is a waste product of phosphate fertilizer and phosphoric acid industries. Vast quantities of the waste product are generally left stockpiled on the ground or discharged into rivers or ponds, and pose serious environmental ...
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Request PDF | Recent research in utilization of phosphogypsum as building materials: Review | The phosphate industry produces a hazardous byproduct …
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Phosphogypsum (PG), as a by-product of phosphoric acid and a bulk industrial solid waste, has increased sharply due to the development of the phosphorus …
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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 …
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Semantic Scholar extracted view of "Recent research in utilization of phosphogypsum as building materials: Review" by G. Murali et al. ... Resource utilization and development of phosphogypsum-based materials in civil engineering. Xiantao Qin Yiyao Cao +6 authors Rong Luo. Engineering, Materials Science. Journal of Cleaner …
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The need for rare earths elements (REEs) in high tech electrical and electronic based materials are vital. In the global economy, deposits of natural REEs are limited except for countries such as China, which has prompted current attempts to seek alternative resources of REEs. This increased the dependence on major secondary rare …
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Phosphogypsum (PG) is a by-product generated from the phosphorus fertilizer industry (phosphoric acid production). PG is similar to natural gypsum, but there are some differences, of which it contains some impurities such as water-soluble phosphate (P 2 O 5), water-soluble fluoride (F −) and P 2 O 5 substituted in the gypsum crystal …
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Mineral processing tailings (e.g., powered rock dust and phosphogypsum-PG) control the budget of NPs on a global scale and thus affect physical and biogeochemical processes in terrestrial and marine environments (Dalmora et al., 2016; Lütke et al., 2020) and the atmosphere including the nucleation of clouds (Retallack, …
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The commonly used production process, which dates to the 1840s, is not very efficient.For every ton of phosphoric acid produced, more than 5 tons of phosphogypsum waste is generated.. Florida has ...
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Many studies have suggested that phosphogypsum can be used as a substitute for natural gypsum to control the hydration reaction rate in Portland cement production . ... During the process of preparing PG for use as a building and/or decoration material, phosphogypsum changed from a hydration level of ½ and 2 (PGF and PGW, …
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In this paper, phosphate and fluoride were added into the gypsum, respectively, to simulate phosphate and fluoride in the phosphogypsum. The affect of adding different impurities on setting time, compressive strength, and bulk density were inspected by simulation experiments.
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Phosphogypsum (PG) is a major industrial waste emitted during phosphate production. Facing the environmentally risky challenges posed by PG emissions and stockpiles, a review of the state of PG resource utilization in civil engineering and searching for new ways to utilize PG to improve the utilization rate are necessary.
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The U.S. EPA prohibits the use of phosphogypsum because of the radioactivity. An exception is made for phosphogypsum with an average concentration of less than 10 pCi/g radium which can be used as an agricultural amendment, but for no other use. Phosphogypsum in north Florida has 10 pCi/g radium. Central Florida …
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Florida Gov. Ron DeSantis recently signed a bill that will allow the Florida Department of Transportation to study the use of phosphogypsum in road construction. This came after a longstanding federal-level prohibition on using phosphogypsum, which was repealed by then-President Donald Trump's Environmental Protection Agency (EPA) in October …
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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) was treated to reduce activity concentrations of 226Ra, which was found to exceed that permitted by international regulations. Treatment methods using hybrid water treatment, sulphuric acid treatment, mixed acid (H2SO4 and HNO3) treatment, water treatment and calcium carbonate powder treatment …
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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 …
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Phosphogypsum (PG), as a by-product of phosphoric acid and a bulk industrial solid waste, has increased sharply due to the development of the phosphorus chemical industry. Because of the increasing serious environmental problems caused by stockpiling of PG, an analysis of its utilization status and development trend in civil engineering is important …
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PG can be used in agriculture as a fertilizer or to decrease the pH and electrical conductivity of a saline soil (Kumar et al., 2020; Wu et al., 2022). Thermal or wet decomposition of PG can yield commercial products such as sulfuric acid and alkali sulfates (Zheng et al., 2011). Some calcium-rich compounds are well known to be efficient …
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