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process for producing ammonium sulfate from phosphogypsum in Oman
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Mineral Carbonation of Phosphogypsum Waste for Production …
Phosphogypsum (CaSO4·2H2O) waste is produced in large amounts during phosphoric acid (H3PO4) production. Minor quantities are utilized in construction or agriculture, while most of the material is stockpiled, creating an environmental challenge to prevent pollution of natural waters. In principle, the gypsum waste could be used to capture several …
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Synergistic preparation and application in PCU of α-calcium sulfate …
Introduction. Phosphogypsum (PG) is an industrial byproduct primarily composed of calcium sulfate dihydrate (DH, CaSO 4 ·2H 2 O), generated from the wet process production of phosphoric acid. Currently, the global annual production of PG is approximately 2.8 million tons, and it can be utilized as a soil conditioner, for the …
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Iraqi Academic Scientific Journals
The phosphogypsum is considered by product from extraction processof sulphoric acid. The mereseberg process is used a waste of phosphogypsum withammonium …
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Gradient removal of Si and P impurities from phosphogypsum …
Phosphogypsum (PG) is a solid waste generated during the production of wet -process phosphoric acid.The silicon and phosphorus impurities in PG greatly affect its resource utilization.In this study, these impurities were removed at atmospheric pressure using a two-step gradient method that simultaneously converted the calcium sulfate …
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Sustainable Utilization of Phosphogypsum in Multi-Solid …
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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Obtaining ammonium sulfate and calcium carbonate by …
Studying the conversion of local natural gypsum and phosphogypsum, categorized as a byproduct of extracting phosphoric acid (EPA), into ammonium carbonate through a …
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Portlandite wet-synthesis process from phosphogypsum …
Portlandite (Ca(OH)2) preparation from phosphogypsum waste (PGW) was evaluated in numerous works; however, the use of this compound is not applied yet in the brine water salinity reduction. In this work, the purity of Ca(OH)2 prepared from PGW and soda aqueous solution was tested for different NaOH/PG molar ratios (MR) close to …
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A novel and sustainable approach for biotransformation of phosphogypsum …
Urease-producing L. sphaericus strain GUMP2 could be used to remove the hazardous phosphogypsum from the environment by converting it to the industrially useful CaCO 3 and ammonium sulfate, a valuable agricultural fertilizer. This novel and sustainable approach could be a promising solution for the hazardous phosphogypsum …
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Mechanism of CO2 Capture Technology Based on the Phosphogypsum …
CO 2 emission all over the world is constantly on the rise. In recent years, CO 2 capture technology has been improved and innovated. Phosphogypsum (PG) is a solid product of industrial solid waste with an increasing annual accumulation. The research of this paper has carried out thermal decomposition of phosphogypsum under the …
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Effective and innovative procedures to use phosphogypsum …
Phosphogypsum (PG) waste is a by-product generated from wet-process phosphoric acid (H3PO4) 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 unused PG is usually …
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Valorization of phosphogypsum in cement-based materials…
Phosphate rock is an abundant mineral in nature that can be found predominantly in the form of calcium phosphate (apatite), and it can be used with or without industrial process [9, 10].The physical-chemical characteristics (mineralogical and chemical composition, impurities, grain size, etc.) depend on the geographic location of the …
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Ammonium sulfate preparation from phosphogypsum waste …
Semantic Scholar extracted view of "Ammonium sulfate preparation from phosphogypsum waste" by A. Kandil et al. ... {Ammonium sulfate preparation from phosphogypsum waste}, author={Abdelhakim Kandil and Mohamed F. Cheira and Hady S. Gado and Madiha H. Soliman and Hesham M. Akl}, journal={Journal of Radiation …
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Muscat Chemical: Leading Ammonium Sulfate Supplier in Oman
6. Textile Industry: Ammonium sulfate is utilized in the textile sector for various processes. Textile Dyeing: It is used as a mordant in textile dyeing processes to improve the fixation of dyes on fibers. Synthetic Fiber Production: Ammonium sulfate is used in the production of synthetic fibers like nylon. 7.
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Experimental study of enhanced phosphogypsum carbonation with ammonia
Phosphogypsum is the byproduct discharged from phosphate industry. A novel process was proposed for converting phosphogypsum into ammonium sulfate via phosphogypsum carbonation with ammonia. The effects of stirring speed, reaction time, initial temperature, CO 2 partial pressure, liquid–solid ratio and excess ammonia ratio …
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Obtaining Nano Calcium Fluoride and Ammonium Sulfate from Phosphogypsum
Phosphogypsum (PG) is the main by-product of phosphoric acid, which is produced by the sulfuric acid attack of phosphate rocks, wet process. This by-product, which contains around 2.0% phosphoric ...
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The Role of the Merseburg Process in Industrial …
Sulfate-containing fertilizers, viz., ammonium sulfate, zinc sulfate, magnesium sulfate, potassium sulfate, and gypsum, were initially evaluated at two different rates (10 and 20 mg kg−1 soil ...
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Radionuclide flow during the conversion of phosphogypsum to ammonium
One partial solution to this problem may be conversion of phosphogypsum to ammonium sulfate by the so-called Merseberg ammonocarbonation process. Ammonium sulfate is an excellent fertilizer which supplies sulfur as well as nitrogen to soils. ... The trial production results from demonstration plant for production of ammonium sulfate …
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A study on the new production process for potassiam sulfate …
A new preparing process for K 2SO 4 from (NH 4) 2SO 4 was developed. The effects of the raw material mole ratio, reaction temperature,crystal temperature, time and crystal improver on the comversion of the raw material and the compoisition of products were studied through orthogonal experiment and individual experiments. Meanwhile, the optimal …
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The wet conversion of phosphogypsum by ammonium …
(CaCO 3) and ammonium sulfate ((NH 4) 2 SO 4) is classifying in the top of the PG conversion and it's known generally by the Merseberg process ( Lachehab et al. 2022 ). This process was realized ...
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Experimental study of enhanced phosphogypsum …
A novel process was proposed for converting phosphogypsum into ammonium sulfate via phosphogypsum carbonation with ammonia. The effects of …
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Application of phosphogypsum in soilization: a review
Phosphogypsum(PG) CaSO 4 ·2H 2 O is a by-product of phosphate ore processing, phosphate fertilizer and compound fertilizer containing phosphorus, and wet phosphoric acid production, which is acidic (pH = 1–4.5) and poorly mobile (Zirnea et al. 2013).The reaction of PG generated in the wet process of phosphoric acid production …
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Mineral Carbonation of Phosphogypsum Waste for Production …
Introduction. Phosphogypsum (PG) is a waste material generated during production of phosphoric acid (H 3 PO 4) from phosphate rock rich in apatite [Ca 5 (PO 4) 3 OH] via reaction with sulfuric acid (H 2 SO 4).Chemically, PG consists primarily of calcium sulfate dihydrate, CaSO 4 ·2H 2 O (Table 1).Worldwide, 100–280 Mt/year PG is …
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(PDF) Phosphogypsum Processing Method
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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The employing of pure calcium sulfate extracted from phosphogypsum …
Semantic Scholar extracted view of "The employing of pure calcium sulfate extracted from phosphogypsum for composing highly pure ammonium sulfate and calcium carbonate" by Adel S. Orabi et al. ... Phosphogypsum (PG), a byproduct during the phosphoric acid production process, also known as the wet process, contains …
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Application of phosphogypsum in soilization: a review
First, ammonium sulfate is generated by the reaction between PG and ammonium carbonate in the fertilizer, which increases the fertilizer's stability. The …
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Mineral Carbonation of Phosphogypsum Waste for …
A well-known and extensively used production process (Vis, 1915; Witte and Wit, 1972) for ammonium sulfate [(NH. 4) 2. SO. 4, AS] utilizes calcium sulfate as a raw material (Eq. 1): CaSO 2H Os NH ...
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Phosphogypsum Two-Step Ammonia-Carbonation Resulting …
Two synthesis methods were used for the conversion of phosphogypsum to ammonium sulfate and calcium carbonate: (i) Two-step method: it consists of reacting …
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K2SO4 production via the double decomposition reaction of KCl …
Section snippets The Phosphogypsum process. Potassium sulfate can be produced by the double decomposition reaction of potassium chloride and phosphogypsum in aqueous ammonia solution at low temperatures. 2 KCl + CaSO 4 ·2 H 2 O → K 2 SO 4 + CaCl 2 +2 H 2 O The presence of ammonia prevents the formation of …
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A novel and sustainable approach for biotransformation of phosphogypsum …
Urease-producing L. sphaericus strain GUMP2 could be used to remove the hazardous phosphogypsum from the environment by converting it to the industrially useful CaCO 3 and ammonium sulfate, a valuable agricultural fertilizer. This novel and sustainable approach could be a promising solution for the hazardous phosphogypsum in the …
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Production of Potassium Sulphate by Conversion of …
conversion [4] and through ammonium sulfate [5] are known. The direct conversion of phosphogypsum and KCl to produce potassium sulfate or syngenite (K2SO4‧CaSO4‧H2O) is of greatest practical interest. The conversion of potassium chloride and calcium sulfate is based on the solubility of salts in the K+, Ca2+ || Cl–, SO 4 2– –H …
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Synergistic preparation and application in PCU of α-calcium sulfate …
Phosphogypsum (PG) is an industrial byproduct primarily composed of calcium sulfate dihydrate (DH, CaSO 4 ·2H 2 O), generated from the wet process production of phosphoric acid. Currently, the ...
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A Novel Process to Recover Gypsum from Phosphogypsum
In this study, we investigated a coarse phosphogypsum containing 49.63% SO 3, 41.41% CaO, 10.68%, 4.47% SiO 2, 1.28% P 2 O 5, 0.11% F, CaSO 4 ·2H 2 O purity of 80.65%, and whiteness of 27.68. Phosphogypsum contains calcium sulfate dehydrate as the main mineral, with small amounts of brushite, quartz, muscovite, and zoisite.
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Phosphogypsum
Phosphogypsum (PG) is a bulk industrial solid waste of wet-process phosphoric acid production. Every ton of phosphoric acid production generates as many as 4–6 tons of PG, including more than 90% of CaSO 4 ·2H 2 O, a small amount of phosphorus, fluorine, organic matter, oxides, heavy metals, radioactive substances and other impurities that ...
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Study on The Production of Ammonium Sulfate Fertlizer …
Phosphogypsum Two-Step Ammonia-Carbonation Resulting in Ammonium Sulfate and Calcium Carbonate Synthesis: Effect of the Molar Ratio OH−/Ca2+ on the Conversion …
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Study on The Production of Ammonium Sulfate …
The production of ammonium sulfate fertilizer from phosphogypsum is studied. The phosphogypsum is considered by product from extraction process of sulphoric acid. The mereseberg process is used a waste of phosphogypsum with ammonium carbonate to produce ammonium sulfate as a main product and calcium carbonate as a byproduct. …
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Mineral Carbonation of Phosphogypsum Waste for Production …
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 ...
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