Arsenic-containing wastewater and arsenic-contaminated soil can cause serious environmental pollution.In this study, phosphogypsum with partial mechanical activation of calcium oxide was used to prepare a new phosphogypsum-based passivate (Ca-mPG), and its remediation performance on arsenic-contaminated soil was …
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The different types of phosphate ores and production methods used in specific regions have led to regional differences in the composition of PG (Fornés et al. 2021). The composition of PG from different areas is shown in Table 2. PG contains elements such as Ca, P, S, and Na, along with …
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1. Introduction. The manufacture of phosphoric acid (H 3 PO 4) through a wet acid process, using natural phosphate rock as raw material generates a major solid waste, the phosphogypsum (PG) [1].PG is highly acidic (pH 1) when initially stored, due to residual sulfuric acid, and consists mainly of calcium sulphate dehydrated (CaSO 4 ·2H …
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The preparation of artificial soil is a potential cooperative resource utilization scheme for red mud and phosphogypsum on a large scale, with a low cost and simple operation. The characteristics of the bacterial community structure and function in three artificial soils were systematically studied for the first time. Relatively rich bacterial …
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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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Properties of phosphogypsum as technogenic soil. Yu V Saenko 1, A M Shiranov 1 and A L Nevzorov 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering, Volume 945, BUILDINTECH BIT 2020. INNOVATIONS AND TECHNOLOGIES IN CONSTRUCTION 8-9 October 2020, …
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The tropical soil was classified as clay-sand lateritic soil (LA'-LG') and the mixtures as quartzite sand lateritic soil (LA-LA') by the disk method. The methylene blue test results indicate a specific surface value of 7.35 m²/g, a cation exchange capacity of 0.804 meq/100 g and show that the soil is constituted basically of inert ...
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Phosphogypsum is usually a yellowish-white, light greyish-white or dark grey fine powdery solid. The main component of PG is CaSO 4 ·2H 2 O, which accounts for more than 90% of its total composition. In addition, PG contains phosphorus, fluorine, organic matters and other impurities (e.g. heavy metal elements and nuclides) (Rashad, …
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Currently, the utilisation of phosphogypsum is mainly concentrated in various fields such as agriculture, chemical industry, ecological and environmental sciences, and building materials [19]. In agriculture, phosphogypsum is used as a soil conditioner to increase crop yield [20], but its utilization rate is low.
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The main and more successful fields of PG application are agriculture (as a conditioner for the soil or as a fertilizer) [4][5][6][7], road construction (for base soil stabilization and as a layer ...
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In traditional utilization pathways, phosphogypsum finds common applications as a soil conditioner, chemical raw material, and cement retarder [14], [15], [16]. However, there is a need to explore novel large-scale utilization pathways for phosphogypsum. The construction industry has a significant demand for building …
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Our Soil Conditioner Granule consists of 22 -23% of calcium and 15 - 20% sulphur as well as many other compounds. Soil conditioners can be used to improve poor soils, or to rebuild soils which have been damaged by improper management. They can make poor soils more usable, and can be used to maintain soils in peak condition.
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Soil conditioners mainly focus on alkaline soil, and chemical raw materials mainly extract and convert valuable components from PG to attain high value-added treatment (Yang et al., ... Recycling phosphogypsum in road construction materials and associated environmental considerations: a review. Heliyon, 8 (11) (2022), Article e11518.
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1. Introduction. The manufacture of phosphoric acid (H 3 PO 4) through a wet acid process, using natural phosphate rock as raw material generates a major solid …
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Massive shield tunnel muck is being landfilled without effective use due to high moisture contents and poor engineering properties, which not only leads to soil resources waste, but also occupies a large amounts of land sources.In this study, industrial waste phosphogypsum (PG) was recycled to improve the tunnel muck with lime, and …
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Next, a study about the industrial by-product gypsum's recycling and reusing was carried out in the realm of construction and building materials (building materials, filling materials and soil conditioners). Then, the influence of the type and content of industrial by-product gypsum on key properties indicators was conducted.
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The invention discloses a phosphogypsum soil conditioner. The phosphogypsum soil conditioner is composed of the following raw materials, by weight, 720-760 parts of phosphogypsum, 50-60 parts of amino acid chelates, 100-120 parts of plant ash, 50-60 parts of amino acids, 45-50 parts of ferrous sulphate, 3-5 parts of boric acid and 0.6-1 …
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a soil is changed by mixing it with other types of soils of different Soil is one of the basic elements of the highway structure. It has a major influence on the design and …
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The invention provides a biological soil conditioner containing phosphogypsum and application thereof. The biological soil conditioner is produced by industrialization, can utilize a solid waste of the phosphogypsum generated by phosphorus chemical industry enterprises, such as a phosphate fertilizer plant, a phosphoric acid plant and the like, in …
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IN TROPICAL SOIL AMENDED WITH PHOSPHOGYPSUM Clay soil Sandy soil Clay soil + PG_Mosaic_Cubatão Sandy soil + PG_Mosaic_Cubatão Cr Ni Pb Hg 0 5 10 15 20 25 30 35 kg-1 Although the elements Cr, Ni, Pb and Hg presented measurable concentration in the soil and soil + PG samples, only Cr and Ni were found in the leachate at a small …
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Revised Request from The Mosaic Company to Use Phosphogypsum in Road Construction Pilot (pdf) (238.56 KB) (August 2023) ... Newer stacks contain a liner to help prevent the effluent from being released directly into the soil and groundwater; older stacks may not. When a stack becomes inactive, an engineered cover is typically placed …
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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 …
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Soil Amendment. Fertilizer. On the Basis of the End-User/Applications: Artificial Reefs and Oyster Beds. Cover for Landfills. Road Construction. Roof Tiles. Soil Conditioner. Others. Geographical ...
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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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Introduction. 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 …
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The invention discloses a phosphogypsum soil conditioner capable of reducing heavy metal pollution. The soil conditioner is prepared from the following raw materials by weight: 14 to 16 parts of degranulated corncobs, 7 to 10 parts of calcium ammonium nitrate, 3 to 5 parts of sodium sulfate, 2 to 4 parts of EM microbial inoculum, 8 to 10 parts of …
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Phosphogypsum holds significant potential for reuse as a soil amendment, in construction materials, and other applications, but applications must be carefully examined. ... Gypsum is a widely …
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Soil: Conservation Practices. R.L. Baumhardt, H. Blanco-Canqui, in Encyclopedia of Agriculture and Food Systems, 2014 Soil Conditioners. Soil conditioners are products that are applied to control water erosion and improve soil properties. Some of the conditioners used to reduce water erosion include PAMs, phosphogypsum, and flue …
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To reduce the GHG emissions of the construction industry, researchers are continuously searching for alternative sustainable ground improvement methods. ... groundwater leaching of contaminants, and bioaccumulation of toxic elements in the food chain when using phosphogypsum as a soil stabilizer even at recommended …
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Phosphogypsum holds significant potential for reuse as a soil amendment, in construction materials, and other applications, but applications must be carefully examined. ... Gypsum is a widely recognized soil conditioner, …
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