The aim of this study was to investigate the survival of PSF after addition of phosphogypsum (PG) and bioorganic fertilizer (BF) in the soil with coexistence of multiple heavy metals, e.g., Pb, As, Cd, Sb, etc. Addition of typical PSF (Aspergillus niger) did not promote the formation of pyromorphite (the most stable form of Pb), possibly due to ...
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Abstract. Phosphogypsum (PG: CaSO 4 ·2H 2 O) is a waste product generated by the phosphate industry. World production of this waste exceeds 200 million tonnes per year. PG, discharged into the …
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228Ra activities was observed attributable to the presence of phosphogypsum in the soil; for Dias et al. [24], the application of PG for soybean production is a practice without
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Phosphogypsum application could also serve to (1) improve soil quality by reducing levels of exchangeable sodium and magnesium percentage, (2) improve soil water movement and water storage in the root zone, (3) improve irrigation efficiency, (4) increase crop yields and water productivity (5) enrich the soil with phosphorus, calcium, …
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The test samples used in this study were taken from phosphogypsum produced by a phosphorus chemical enterprise in the Deyang Region, Sichuan Province, China. The content of CaSO 4 ·2H 2 O in the phosphogypsum was 80.65%, and the whiteness was 27.68. The water content of the phosphogypsum was less than 5%, …
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on a reclaimed site. Canadian Journal of Soil Science, 2013, 93(4): 497-510 Turner, E.L 2013. Influence of soil cap depth and vegetation on reclamation of phosphogypsum stacks in Fort Saskatchewan, Alberta. MSc thesis, University of Alberta. Abou Rizk, Jenna, 2015. Potential Anthroposol development using phosphogypsum as a substrate with soil
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The pre-experiment soil salinity levels, expressed in terms of soil electrical conductivity (EC e) at different soil depths extending up to 0.9 m were in the range of 1.44–1.61 dS m −1 with the highest value observed in the upper 0.15 m (Table 2).Among the anions, HCO 3 2− was dominant with a maximum concentration of 9.47 mmol c L −1 …
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Phosphogypsum is a by-product of phosphate fertilizer production and a source of calcium, sulphur, and phosphorus for plants. It can be used as a fertilizer or amendment …
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Phosphogypsum (PG) is a metal and radionuclide rich-waste produced by the phosphate ore industry, which has been used as soil fertilizer in many parts of the …
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With the combined effect of 12% alccofine + 1.0% phosphogypsum of expansive soil, UCS improved from 46.4 to 155 kPa. The strength improved owing to the growth of calcium silicate hydrate (C–S–H), calcium aluminate hydrates (C–A–H), and other cementitious complexes observed in SEM and XRD studies. As a consequence of …
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This paper describes a study carried out to check the improvements in the properties of soil with phosphogypsum in various percentages (i.e., 2, 4 and 6%) with fixed quantity of flyash (5%). The ...
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The application of phosphogypsum (PG) on sodic soils provides nutrients to the soil, reduces the toxic effect of Na +, and improves soil properties. Laboratory …
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In tropical no-till systems, applying lime (L) and phosphogypsum (PG) on the soil surface may be a potential strategy for reducing soil acidification and improving soybean root growth, thereby enhancing plant nutrition and physiological responses and, in turn, crop resistance to dry spells. This study evaluated the impact of long-term (17 …
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Phosphogypsum (PG) is a by-product of phosphorus fertilizer that is typically stacked near production sites. Phosphogypsum contains trace elements and naturally occurring radioactive materials which may be hazardous to the surrounding environment. Phosphogypsum stack reclamation typically involves placing a soil cap …
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Phosphogypsum stand for the chemical origin gypsum generated in fertilizers production, in which phosphate rock is attacked by sulfuric acid resulting in phosphoric acid (H3PO4) and phosphate ...
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This paper reports the interaction between natural environment and phosphogypsum free solution hereafter named industrial effluent. It is a strongly acid solution containing some heavy metals and fluorides (F–). Two components of the receiving environment were considered, ground sediments and Jeffara aquifer water (Tunisia …
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The study aims to (1) explore the physicochemical properties of phosphogypsum-modified saline-alkali soil, (2) characterize soil fungal community …
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The aim of this study is to: (1) evaluate the effect of PG on soil respiration and enzyme activity; (2) describe the structure and diversity of soil bacterial …
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application of phosphogypsum, as a source of calcium and sulfur besides its acidity that can contribute to soil lime solubilization could improve soil physical properties by reducing the dispersive effect of sodium and increasing cementing agents in the soil, which could improve soil aggregation, soil porosity, and soil water retention …
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This research work aimed to study the effects of phosphogypsum (PG) amendment on the physicochemical proprieties of saline soil as well as the biochemical and physiological traits of Capsicum annuum grown under controlled conditions. C. annuum plants were grown on soil amended with different rates of PG varying from 0% to 5%, …
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Modifying saline–alkali soil is crucial for ensuring food security and expanding arable land. Microorganisms play a key role in driving various biochemical processes in agricultural ecosystems. However, limited information exists on the changes in the microbial community and soil structure in soda saline-alkali soil under modified …
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desired properties of s oil for co nstruction pur pose these b lack . ... and SO4-2 from phosphogypsum leachate (pH 1.7) by soil minerals was investigated using a serial batch procedure. pH was ...
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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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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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Durum wheat (Triticum turgidum var. durum cv. Petra) was grown in alkaline soil (pH = 8.1) with added phosphogypsum (PG) at different rates [0 (control), 15, 30, 45, and 60 g PG kg −1 dry soil] and the arbuscular mycorrhizal fungus (AMF) Glomus mosseae to determine the effects of these treatments on plant yield and acquisition of phosphorus ...
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The wet process is the most used worldwide. It is applied by many countries such as Morocco, Spain, and Tunisia (Bolívar et al. 2009;El Cadi et al. 2014; Ennaciri et al. 2020a; Maazoun and ...
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Phosphogypsum (PG) is a by-product of the phosphate fertilizer industry that is produced during the phosphoric acid production process. Annual global PG production ranges between 100 to 300 Mt, with only 15% of that utilized while the rest is usually placed on large dumps with potential serious human and environmental impacts.
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Phosphogypsum (PG) is a radioactive industrial by-product produced in large quantities when processing phosphate ores into fertilizers. With rapid growth of high concentration phosphate and compound fertilizers production in China, PG production is increasing every year. Phosphogypsum is usually stored in such a way that it not only …
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For example (Papastefanou et al., 2006),developed a soil reclaiming technique for decreasing the sodium concentrations in alkaline soils using 5–20% phosphogypsum. Negative effects through the treatment of soils with PG include an increase in their radioactivity, which often results in radioactive levels above the limits …
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