A phosphogypsum-based subgrade stabilizer (PBSS) was formulated using industrial by-product phosphogypsum (PG), mixed with slag and calcium-silicon-rich active material (GSR). The …
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The leachate from red mud entering the soil causes soil alkalinization and hardening, causing poor growth or death of crops, while the leachate from phosphogypsum may lead to soil acidification, increasing the risk of heavy metals and other harmful substances being released again from soil particles (Wang et al., 2023b; Remisha et al., 2024).
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DOI: 10.1016/j.conbuildmat.2023.134437 Corpus ID: 266295012; Mechanical properties and micro-mechanism of improved shield tunnel muck with phosphogypsum and lime @article{Jiao2024MechanicalPA, title={Mechanical properties and micro-mechanism of improved shield tunnel muck with phosphogypsum and lime}, author={Ning Jiao and Jianwen Ding and …
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Keywords: road construction materials, waste from the producti on of phosphoric acid, phosphogypsum dihydrate, mineral powder, technology of as phalt concrete mixture preparation
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Residual effects of phosphogypsum rates and machinery traffic on soil. Construction and Building Materials. 2024; 2. Save. ... This study reports long- and medium-term effects of the application of up to 12 Mg ha -1 of phosphogypsum (PG) as soil conditioner and source of Ca and S, in two field trials, conducted under no-till … Expand. 58 [PDF ...
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The present invention provides a construction method for ecologically protecting an expansive soil slope by combining phosphogypsum with microbial mineralization. The method includes: (1) placing Bacillus pasteurii in a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) preparing a mixture with …
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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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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 gas desulfurization (FGD) gypsum.
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PRODUCT PHOSPHOGYPSUM Presented To: THE NINTH INTERNATIONAL SYMPOSIUM ON NATURALLY OCCURRING RADIOACTIVE MATERIAL DENVER, COLORADO 23-27 SEPTEMBER 2019 ... Agriculture: Fertilizer/Soil Conditioner Road building Construction Materials Landfill cover Glass/ceramic Marine projects Sulfur recovery Florida Industrial and Phosphate …
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The improvement of saline-alkali land plays a key role in ensuring food security and promoting agricultural development. Saline soils modifies the response of the soil microbial community, but ...
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The improvement of saline-alkali land plays a key role in ensuring food security and promoting agricultural development. Saline soils modifies the response of the soil microbial community, but research is still limited. The effects of applying phosphogypsum with rice cultivation (PRC) on soil physicochemical properties and bacterial community in soda saline …
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Earth pressure balance shield (EPBS) has become the mainstream construction method for metro tunnels in China, which inevitably generates a large amount of discharged soil, putting enormous pressure on the environment and the cost. In order to realize the resource utilization of shield dregs, this paper explored the feasibility of recycling the waste silty clay as …
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The results showed that the PRC significantly improved the physicochemical properties of soil, significantly reduced the salinity, increased the utilization efficiency of carbon, nitrogen, and …
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Environmental protection; Phosphogypsum; Recycling; Pretreatment; Highway engineering. 1. Introduction. Phosphoric acid (PA) is a common inorganic acid used in agriculture, food, pharmaceuticals, chemicals, etc. Phosphoric acid is a main raw material for producing agricultural phosphate fertilisers and a major food additive, and it is also used in manufacturing …
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Silty soil from northern Jiangsu, China was used in the current study. The construction standards of a normal roadbed indicate that soil to be used should be mixed with that of solidified material under an optimal moisture content [28].Prior to stabilization, the chemical composition of the silty soil was determined via X-ray fluorescence spectrometry.
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Gypsum is a naturally occurring mineral that is commonly found in sedimentary rock formations. It is widely used in construction and agriculture due to its ability to improve soil fertility and …
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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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Abstract: A phosphogypsum-based subgrade stabilizer (PBSS) was formulated using industrial by-product phosphogypsum (PG), mixed with slag and calcium-silicon-rich active material (GSR). The active powder (AP) was used to modify PBSS, and PBSS-AP was obtained. PBSS and PBSS-AP were each mixed with 10% silty soil, and cement and lime (CAL: 5% lime + 2% …
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A nonnegligible fraction of PG occurs as nanoparticles (<0.1 μm). When PG are used for e.g., agriculture or construction purposes, nanoparticles (NPs) can be re-suspended by Aeolian and fluvial processes. ... Implications for Food Safety of the Uptake by Tomato of 25 Trace-Elements from a Phosphogypsum Amended Soil from SW Spain, vol. 266 ...
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The road construction pilot project will have a layer of asphalt on top of the layer of road base containing phosphogypsum. On December 23, 2024, EPA approved a request from Mosaic Fertilizer, LLC for use of …
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The construction of large-scale engineering projects results in the generation of a considerable quantity of diverse engineering waste soil. A typical example is the excavated soil from road engineering, which is often in excess of the amount of backfill soil required [1], [2].Therefore, a significant amount of waste soil is produced.
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In recent years, phosphogypsum soil improvement and soilization have become research hotspots. 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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Capitalizing on its abundant sulfur resources, the chemical industry frequently employs PG in the synthesis of sulfuric acid, potassium sulfate, as well as some sulfur-based products[13]. Additionally, PG has remarkable effects on promoting crop growth and increasing agricultural yields, making it a valuable fertilizer or soil conditioner[14].
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Road Construction. Roof Tiles. Soil Conditioner. ... Based on Product Types the Market is categorized into Below types that held the largest Phosphogypsum market share In 2023. Soil Amendment.
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Moreover, phosphogypsum is employed for some agricultural applications such as a supplement of plant-nutrients including S, Ca, and P and as a soil conditioner to increase the infiltration rate and reduce the soil erosion (Jacomino, 2010).Through this context, the current study concerns with the valorization of phosphate mine wastes at Abu ...
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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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Phosphogypsum holds significant potential for reuse as a soil amendment, in construction materials, and other applications, but applications must be …
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Phosphogypsum with Rice ... construction, and limit sustainable agricultural, economic, and social development. ... (CaSO4·2H2O), is a soil conditioner in which dissolved Ca2+ can undergo a ...
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As a soil conditioner, ... Hentati, O. et al. Phosphogypsum as a soil fertilizer: Ecotoxicity of amended soil and elutriates to bacteria, invertebrates, algae and plants. J. Hazard.
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This study investigates the implications of using phosphogypsum (PG) as a soil conditioner in Brazilian agriculture, specifically focusing on the transfer of radionuclides from soil to plants. The research demonstrates that PG application does not significantly alter the levels of radionuclide radioactivity in crops such as soybean, corn, and ...
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