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Journal articles on the topic 'Extraction phosphoric acid'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Turgis, Raphaël, Antoine Leydier, Guilhem Arrachart, et al. "Uranium Extraction from Phosphoric Acid Using Bifunctional Amido-Phosphonic Acid Ligands." Solvent Extraction and Ion Exchange 32, no. 5 (2014): 478–91. http://dx.doi.org/10.1080/07366299.2014.898435.

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2

Al-Thyabat, S., and P. Zhang. "REE extraction from phosphoric acid, phosphoric acid sludge, and phosphogypsum." Mineral Processing and Extractive Metallurgy 124, no. 3 (2015): 143–50. http://dx.doi.org/10.1179/1743285515y.0000000002.

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3

Berkalou, Kaoutar, Abderrahman Nounah, Mohamed Khamar, Ratiba Boussen, and Essediya Cherkaoui. "Extraction of cadmium from phosphoric acid by a synthesized extracting agent." E3S Web of Conferences 150 (2020): 02007. http://dx.doi.org/10.1051/e3sconf/202015002007.

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The Purification of phosphoric acid used several extractants from the family of oxygenates, sulfurous or amino compounds. In this work, we were interested in the synthesis, physico-chemical and spectroscopic characterization, and use of the product C11H18N2O as an extractant of cadmium from phosphoric acid. The synthesized product was characterized by: infrared spectroscopy, nuclear magnetic resonance, and mass spectroscopy. Solubility tests in different solvents have been carried out. Subsequently, liquid-liquid extraction of cadmium from phosphoric acid was carried out using C11H18N2O as an

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4

Zhazira, Baltabekova, Kenzhaliyev Bagdaulet, Lokhova Nina, and Kassymzhanov Kaisar. "Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 83, no. 1 (2021): 140–52. http://dx.doi.org/10.37934/arfmts.83.1.140152.

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When apatites and phosphorites are processed, up to 30% of rare earth metals are converted into wet-process phosphoric acid. Wet-process phosphoric acid from the phosphorite treatment process differs from apatite one by impurity composition, i.e. the iron content is by 3.5 times, and calcium is by 5.0 times more. The complex composition of the wet-process phosphoric acid from the phosphorite treatment process requires additional researches to select optimal ion exchangers and technological parameters of sorption. Various aspects of sorption have been studied to select the optimal ion exchanger

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5

Elbekovich, Sultonov Bokhodir, and Xolmatov Dilshod Sattorjonovich. "Study of the Production of Wet-processing Phosphoric Acid by Clinker Method on Base of Mineralized Mass." Chemical Science International Journal 33, no. 5 (2024): 1–10. http://dx.doi.org/10.9734/csji/2024/v33i5911.

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The article presents the results of the study of extractive phosphoric acid extraction processes from the mineralized mass (MM) - mineralized mass (MM) produced during the thermal processing of Central Kyzylkum (CK) phosphorite. Effects of sulfuric acid concentration on the quality parameters of the obtained wet-processing phosphoric acid (WPPA), processes of WPPA extraction through different concentrations of phosphoric acid solution from phosphoric acid-gypsum porridge were studied. The optimal parameters of these processes have been determined. In the composition of WPPA obtained in accepta

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6

MORITA, Yasuji, Masumitsu KUBOTA, Masahiro YONEYA, Osamu TOCHIYAMA, and Yasushi INOUE. "Influence of Monoisodecyl Phosphoric Acid on Extraction of Neptunium with Diisodecyl Phosphoric Acid." Journal of Nuclear Science and Technology 26, no. 7 (1989): 698–704. http://dx.doi.org/10.1080/18811248.1989.9734369.

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7

Ramazonova, Dilbar, Zokirjon Turaev, Bakhodir Mamurov, et al. "Extraction of Zinc from Zinc Sublimber with Sulfuric, Thermal and Extraction Phosphoric Acid." IOP Conference Series: Earth and Environmental Science 1204, no. 1 (2023): 012003. http://dx.doi.org/10.1088/1755-1315/1204/1/012003.

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Abstract The study was conducted to extract zinc and the results on the extraction of Zn from zinc sublime with the solution of sulfuric, thermal and extraction phosphoric acids are presented depending on Solid: Liquid (S:L), concentration and duration of the leaching process. Sulfuric acid was used with a content of 8% which is a waste product of non-ferrous metallurgy, thermal phosphoric extraction phosphoric acid from phosphorites of the Central Kyzylkum. It has been established that the maximum degree of zinc extraction is noted when using extraction phosphoric acid, which is 96-98%, S:L=1

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8

Cho, Kanghee, Eunji Myung, Hyunsoo Kim, Cheonyoung Park, Nagchoul Choi, and Cheol Park. "Effect of Soil Washing Solutions on Simultaneous Removal of Heavy Metals and Arsenic from Contaminated Soil." International Journal of Environmental Research and Public Health 17, no. 9 (2020): 3133. http://dx.doi.org/10.3390/ijerph17093133.

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In this study, we investigated the feasibility of using a solution of sulfuric acid and phosphoric acid as an extraction method for soil-washing to remove Cu, Pb, Zn, and As from contaminated soil. We treated various soil particles, including seven fraction sizes, using sulfuric acid. In addition, to improve Cu, Pb, Zn, and As removal efficiencies, washing agents were compared through batch experiments. The results showed that each agent behaved differently when reacting with heavy metals (Cu, Pb, and Zn) and As. Sulfuric acid was more effective in extracting heavy metals than in extracting As

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9

Mirzaqulov, X.Ch, Zikirov.X, E.D Eminov, and O. Boltaboyev. "MANUFACTURE EXTRACTION PHOSPHORIC ACID BY WET METHOD." GOLDEN BRAIN 1, no. 26 (2023): 67–70. https://doi.org/10.5281/zenodo.8379217.

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<em>Results of comparative analyses of a chemical compound and technological exponents of manufacture extraction phosphoric acid are resulted. It is shown, that optimum conditions of reception extraction phosphoric acid with the content of 21,5-23% </em><em>Р</em><em><sub>2</sub></em><em>О</em><em><sub>5</sub></em><em> are temperature 85-90</em><em><sup>о</sup></em><em>С</em><em>, ratio L:S = 2,5-3,5 and the content free S</em><em>О</em><em><sub>3</sub></em><em> 1,5-2,5%.</em>

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10

Najmiddinov, Rixsitilla Yunusali o'g'li Shamshidinov Israiljon Turgunovich Qodirova Gulnoza Qodirjonovna Sayfiddinov Osimkhan Obiddin o'g'li. "PURIFICATION OF PHOSPHORIC ACID FROM IMPURITIES IN THE EXTRACTION PROCESS AND RESEARCH OF OBTAINING HIGH-QUALITY NITROGEN-PHOSPHORIC FERTILIZERS." MODELS AND METHODS IN MODERN SCIENCE 1, no. 16 (2022): 86–99. https://doi.org/10.5281/zenodo.7340526.

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The aim of the research is the removal of phosphoric acid from Central Kyzylkum phosphates by fluoride and sulphate additives during the extraction of phosphoric acid, iron and aluminium, calcium, magnesium, sulphate, fluorine during the ammonium phosphate acid extraction phase. Study the process of producing environmentally friendly and fully water-soluble ammonium phosphates.

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11

JIA, Xuhong, Jun LI, Yang JIN, Jianhong LUO, Baoming WANG, and Chunlei MA. "Extraction of Nitric Acid from Wet-process Phosphoric Acid." Solvent Extraction Research and Development, Japan 20 (2013): 183–95. http://dx.doi.org/10.15261/serdj.20.183.

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12

Zhang, Hai Yan, Jin Yang, Da Zeng Ming, and Zhi Xiang Li. "Experimental Study on De-Fluorinating by Adding Dilute Alkali in Wet Phosphoric Acid Extraction Organic Phase." Applied Mechanics and Materials 662 (October 2014): 46–50. http://dx.doi.org/10.4028/www.scientific.net/amm.662.46.

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Possible ways to remove fluoride from phosphoric acid are extraction,but there are always generated a second organic phase ,where still have small amounts of impurities such as fluoride,sulfate,iron,aluminum and heavy metals. The traditional process using pure water or dilute phosphoric acid washing the organic phase to get phosphoric acid ,but the impurities removing rate is not obvious.This study explore a new way to changes the washing detergent,using dilute alkali solution to reduce fluoride content of stripping in phosphoric acid.The optimization of experimental conditions is dilute alkal

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13

Laila, A. Guirguis, and I. Falila Nagwa. "Extraction of Uranium from the Raffinate of Egyptian Phosphoric Acid Purification Using Aliquat336 Extractant in One Step." Pharmaceutical and Chemical Journal 3, no. 2 (2016): 243–53. https://doi.org/10.5281/zenodo.13754182.

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This paper describes the extraction of uranium from raffinate phosphoric acid purified using aliquatR336 in kerosene as a selective extracting agent of uranium, Several factors were studied for the maximum extraction of uranium. mainly aliquatR336 concentration, shaking time, aqueous/organic phase ratio, the diluents effect and temperature on the extraction, Effect of different stripping agents were investigated , High uranium extraction yields 98.4% were obtained ,The uranium is finally converted to a high purity using precipitation with hydrogen peroxide, Finally a technological flow sheet i

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14

Kizim, Nikolai F., and Anastasiya E. Tarasenkova. "DETERMINATION OF TYPE OF SOLVATE OF PHOSPHORIC ACID DURING ITS EXTRACTION BY TRIBUTYL PHOSPHATE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 5 (2019): 104–9. http://dx.doi.org/10.6060/ivkkt.20196205.5x.

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The extraction of phosphoric acid with a solution of tri-n-butyl phosphate (TBP) in toluene from its individual aqueous solutions in a concentration range of 0-11 M is investigated. The experiments are performed at room temperature (20 ± 1 °С). The isotherms of extraction of phosphoric acid under conditions of equality of the volumes of the saturating aqueous phase and the receiving organic phase are constructed. The extraction isotherm is nonlinear, but to an acid concentration in the aqueous phase of ~ 8 M, it is close to linear, and at higher concentrations, the amount of extracted acid inc

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15

N.N., Smirnov, Konoval A.V., Smirnova D.N., and Kochetkov S.P. "The impact of functional groups of the surface of carbon materials on the efficiency of purification of extraction phosphoric acid from fluorine compounds." Ekologiya i stroitelstvo 2 (2019): 11–18. http://dx.doi.org/10.35688/2413-8452-2019-02-002.

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The environmental problems of the production of extraction phosphoric acid and the effect of fluorine on the human body are discussed in the article. The creation of the industry of phosphoric fertilizers on the basis of processing of fluorine-containing phosphate raw materials and fluorine-containing compounds, the development of their application require the study of environmental consequences arising from this, because fluorine is characterized by high mobility in the biological cycle of metabolism. For the purification of phosphoric acid from fluorine was used carbon adsorbents such as act

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16

Ramazonova, Dilbar, Zokirjon Turayev, Bakhodir Mamurov, et al. "Investigation of the process of extraction of copper from dust of electric filters of oxygen-flare smelting furnace with sulfuric, thermal, and extractive phosphoric acid." IOP Conference Series: Earth and Environmental Science 1281, no. 1 (2023): 012003. http://dx.doi.org/10.1088/1755-1315/1281/1/012003.

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Abstract The results of studies on the extraction of copper from the dust of electrostatic precipitators of oxygen-torch melting with solutions of sulfuric, thermal, extraction phosphoric depending on S:L, concentration and duration of the leaching process are presented. It has been established that the maximum degree of copper extraction is observed when using extractive phosphoric acid, which reaches more than 86%. The optimal parameters for the extraction of copper in extraction phosphoric acid are S:L = 1:10, temperature 90°C and mixing time 25-30 minutes.

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17

Elizalde, M. P., E. García Pavón, A. Almela, and B. Menoyo. "Vanadium Extraction from Phosphoric Acid Solutions by LIX 860‐I. Application to Industrial Phosphoric Acid." Solvent Extraction and Ion Exchange 26, no. 3 (2008): 180–91. http://dx.doi.org/10.1080/07366290802053520.

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18

Hmamou, M., B. Ammary, A. Bellaouchou, and A. El hammadi. "Liquid-liquid extraction of zinc from phosphoric acid solution by acid di (2-ethylhexyl) phosphoric." Materials Today: Proceedings 24 (2020): 1–6. http://dx.doi.org/10.1016/j.matpr.2019.07.435.

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19

Ma, Guo Xian, and Hai Ying Zhang. "Washing of the Ash from One Shanghai Plant Using Phosphoric Acid." Advanced Materials Research 664 (February 2013): 228–31. http://dx.doi.org/10.4028/www.scientific.net/amr.664.228.

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Municipal solid waste incineration (MSWI) fly ash was regarded as one kind of hazardous waste due to the enrichment of heavy metals (Zn, Pb, Cd and Cu), which should be removed from the ash or stabilized prior to final landfill disposal. Extraction with phosphoric acid is a conventional method of safe treatment of fly ash. In this work, influence of phosphoric acid concentration and liquid to solid ratio on removal efficiency of the four heavy metals was investigated. It was found that phosphoric acid was efficient in removing Pb, Zn and Cu but less efficient in removing Cd. Removal ratio foll

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20

Shlewit, Habib, and Moussa Alibrahim. "Counter current extraction of phosphoric acid: food grade acid production." Periodica Polytechnica Chemical Engineering 52, no. 1 (2008): 7. http://dx.doi.org/10.3311/pp.ch.2008-1.02.

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21

Yu, Jing, and Daijun Liu. "Extraction of magnesium from phosphoric acid using dinonylnaphthalene sulfonic acid." Chemical Engineering Research and Design 88, no. 5-6 (2010): 712–17. http://dx.doi.org/10.1016/j.cherd.2009.11.008.

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22

Lokshin, E. P., V. I. Ivanenko, O. A. Tareeva, and R. I. Korneikov. "Sorption extraction of lanthanides from phosphoric acid solutions." Russian Journal of Applied Chemistry 82, no. 4 (2009): 537–44. http://dx.doi.org/10.1134/s1070427209040028.

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23

Ahmed, Ismail M., Romany N. Ammanoeil, Ebtissam A. Saad, and Jacqueline A. Daoud. "Purification of Crude Phosphoric Acid and Leached Apatite by Solvent Extraction with CYANEX 923 in Kerosene." Periodica Polytechnica Chemical Engineering 63, no. 1 (2018): 122–29. http://dx.doi.org/10.3311/ppch.11626.

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CYANEX 923 (a mixture of four trialkylphosphine oxides) in kerosene has been used for the extraction of phosphoric acid. Different parameters affecting the extraction of phosphoric acid such as shaking time, temperature, phase ratio O/A, extractant and phosphoric acid concentration were separately investigated. The stoichiometry of the extracted species was found to be H3PO4.L, where L refers to CYANEX 923. The stripping of the extracted species was found to be efficient with water. The obtained results were used for the recovery of phosphoric acid from both the crude acid and the leached solu

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24

Li, Xing, Jun Li, Yang Jin, Ming Chen, Dongya Feng, and Yunhai Guo. "Wet process of phosphoric acid purification by solvent extraction using tri-n-butyl phosphate and cyclohexanol mixtures." Journal of the Serbian Chemical Society 82, no. 5 (2017): 579–92. http://dx.doi.org/10.2298/jsc161028019l.

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Solvent extraction is an efficient, economical and widely-used technology for the purification of wet process phosphoric acid (WPA). This present work focused on the development of a solvent extraction system, TC, representing tri-n-butyl phosphate (TBP) and cyclohexanol mixtures. The equilibrium phase diagram of the system H3PO4?H2O?TC at 298.2 K and atmospheric pressure was obtained. The effects of extraction time, phosphoric acid concentration, extractant concentration, temperature and phase volume ratio on extraction efficiency were studied. The extracted complexes were estimated to be 1.8

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25

Li, Bowen, Bona Deng, Yuqi Yao, et al. "Distinct Extraction Behaviors of La/Ce and Sc/Y in the Phosphoric Acidic Leachate of Bauxite Residues and Their Sequential Extraction with Di-(2-Ethylhexyl) Phosphoric Acid as Extractant." Minerals 13, no. 10 (2023): 1345. http://dx.doi.org/10.3390/min13101345.

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Bauxite residue is a hazardous solid waste produced in the alumina production process and has also become a significant rare earth resource. The extraction behaviors of La, Ce, Sc and Y solubilized in the phosphoric acidic leachate of bauxite residue were investigated in this study with di-(2-ethylhexyl) phosphoric acid as the extractant. With a relatively low concentration of 2% at an aqueous solution pH of 1.5, 90% Sc and 98% Y were extracted by di-(2-ethylhexyl) phosphoric acid. Less than 5% La and Ce and impurities of Fe, Al, Ti and Ca were extracted in this situation. As the concentration

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26

Berkalou, K., A. Nounah, H. Chaair, M. Khamar, R. Boussen, and A. Driouich. "Modelling and Optimizing the Solvent Extraction of Cadmium from Phosphoric Acid using Experimental Design." Asian Journal of Chemistry 33, no. 3 (2021): 637–43. http://dx.doi.org/10.14233/ajchem.2021.23079.

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The removal of cadmium from phosphoric acid was carried out using the solvent extraction process, taking into account factors such as pH, concentration of the extracting agent [EA], organic phase/aqueous phase (O/A) ratio, stirring time and stirring rate. In order to study the effect of these involved factors and their interactions on the extraction percentage of cadmium, a composite central design (CCD) of 24 experiments was adopted. An empirical model was developed and validated by applying ANOVA analysis. The graphical representation of this model in the variable space allowed to determine

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27

Xiao, Ling Ling, Na Wang, and Ping Na. "Preparation and Properties of Novel Nano-Cu-Vermiculite Composite for Iodineion Extraction in the Phosphoric Acid." Advanced Materials Research 875-877 (February 2014): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.267.

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Nano-Cu-vermiculite composite with high distribution coefﬁcients and adsorption capacity towards iodine ion in phosphoric acid systemwere prepared. This material was prepared by loading organic and copper salts with an ion exchange method on vermiculite substrate. Adsorption kinetic and role of phosphoric acid was discussed. Adsorption kinetic experiments indicated that more than 90% of the iodine was absorbed by the composite within the first 30 min and the adsorption kinetic ﬁtted the pseudo-second-order model well. Phosphoric acid has little effect on the extraction, which provides a theore

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28

Bagnavets, N., A. Zhevnerov, M. Grigoryeva, and T. Pshenichkina. "Influence of phosphorus fertilizers of various composition on the yield of tomato crops and control of their consumption by plants." IOP Conference Series: Earth and Environmental Science 937, no. 2 (2021): 022131. http://dx.doi.org/10.1088/1755-1315/937/2/022131.

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Abstract Phosphate fertilizers are widely used for growing crops. To obtain phosphoric fertilizers, phosphoric acid purified using organic solvents, one of which is 100% tributyl phosphate, is used. The authors of the paper have chosen this solvent to obtain purified phosphoric acid. Purification from impurities included the stages of extraction and reextraction. On the basis of the re-extract and chemically pure phosphoric acid, a phosphoric fertilizer magnesium-ammonium phosphate (MgNH4PO4) was synthesized and used in the greenhouse experiment. The greenhouse experiment consisted in growing

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29

Singh, Harvinderpal, R. Vijayalakshmi, S. L. Mishra, and C. K. Gupta. "Studies on uranium extraction from phosphoric acid using di-nonyl phenyl phosphoric acid-based synergistic mixtures." Hydrometallurgy 59, no. 1 (2001): 69–76. http://dx.doi.org/10.1016/s0304-386x(00)00145-6.

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30

Stenström, S. "Extraction of cadmium from phosphoric acid solutions with amines Part IV: Phosphoric and nitric acid mixtures." Hydrometallurgy 22, no. 1-2 (1989): 159–69. http://dx.doi.org/10.1016/0304-386x(89)90047-9.

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31

Jang, Gyoung Gug, Joshua A. Thompson, Pimphan Aye Meyer, Patrick Zhang, Ziheng Shen, and Costas Tsouris. "Technoeconomic Assessment of Phosphoric Acid and Rare Earth Element Recovery from Phosphoric Acid Sludge." Sustainability 16, no. 16 (2024): 6984. http://dx.doi.org/10.3390/su16166984.

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Sustainability faces many challenges, including the availability of materials necessary for technological advancement. Rare earth elements (REEs), for example, are key materials for several manufacturing industries that can unlock renewable energy and sustainable development. In this study, a decanter centrifuge has been employed to successfully separated phosphoric acid and REE-containing particles from phosphoric acid sludge with concentrations ranging from 1000 to 2200 ppm REEs. Operating efficiently with up to 35 wt.% solids, the centrifuge was demonstrated to achieve approximately 95% pho

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32

Tran, Phuong Mai, Canh Huy Nguyen, and Thang Manh Ngo. "RECOVERY OF NI2+ BY DI-(2-ETHYLHEXYL) PHOSPHORIC ACID (HDEHP)." Science and Technology Development Journal 12, no. 3 (2009): 40–50. http://dx.doi.org/10.32508/stdj.v12i3.2218.

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This paper dealts with solvent and bulk liquid membrane extraction of Ni2+ from its chloride solutions by HDEHP in n-heptane. Effects of extraction time, initial pH and Ni2+ concentration in the feed as well as HDEHP concentration in the organic phase were investigated. Solvent extraction equilibrium was established within 10 minutes. Ni2+ showed to be extracted into the organic phase preferentially as Ni(DEHP), complexes. The Ni2+ extraction yield decreased with increasing initial Ni2+ concentration, with decreasing pH and/or HDEHP concentration. The later is not only due to shifting equilibr

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33

Huang, Du Shu, Jin Hong Yin, Xian Shu Lv, Yan Xu, and Jie Wu. "Cobalt Ion Extraction by 2-Ethylhexyl Phosphoric Acid Mono-2-Ethylhexyl Ester Microemulsion Saponified." Advanced Materials Research 1015 (August 2014): 476–79. http://dx.doi.org/10.4028/www.scientific.net/amr.1015.476.

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The extraction process of cobalt using microemulsion system saponified with P507 as extracting agent was studied. The influences of initial concentration, the concentration of P507, initial pH, the extracting time and the volume ratio of organic phase to water phase on extraction coefficient were also studied. Experimental results show that the saponification microemulsion system using P507 as extractant is thermodynamic stable, and it can separate cobalt better. The optimum conditions were achieved as: the initial concentration is 0.04 mol/L, pH is 2; The concentration of P507 is 6%, extracti

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34

Jalil, Mohd Jumain, Nurul Afwanisa, Intan Suhada, and Noor Hidayu Abdul Rani. "Synergistic Extraction of Gold by Di-(2-ethylhexyl)phosphoric Acid - Isodecanol." Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 12, no. 1 (2019): 54–60. http://dx.doi.org/10.2174/2405520412666190214152701.

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Objective and Background: Synergistic extraction was introduced to replace single extraction due to enhanced extraction efficiency of heavy metal. Methodology: In order to improve extraction efficiency, di-(2-ethylhexyl) phosphoric acid (D2EHPA) was mixed with isodecanol to provide a synergistic effect together with leaching solution which is thiourea. From the single extraction system, the optimum temperature is found at 30°C producing the highest yield of %E of 91.30%. The single extraction also happened better with the presence of Fe(III) solution and thiourea as the %E is at 91.23%. Result

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35

Jin, Yang, Da Zou, Shiqin Wu, Yuqing Cao, and Jun Li. "Extraction Kinetics of Phosphoric Acid from the Phosphoric Acid—Calcium Chloride Solution by Tri-n-butyl Phosphate." Industrial & Engineering Chemistry Research 54, no. 1 (2014): 108–16. http://dx.doi.org/10.1021/ie503273j.

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36

Li, Zhangnan, Haoyan Sha, Nan Yang, Ye Yuan, and Guangshan Zhu. "Phosphoric Acid Based Porous Aromatic Framework for Uranium Extraction." Acta Chimica Sinica 77, no. 5 (2019): 469. http://dx.doi.org/10.6023/a19010028.

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37

Goto, Masahiro, Kazuo Kondo, and Fumiyuki Nakashio. "Protein extraction by reversed micelles using dioleyl phosphoric acid." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 23, no. 4 (1990): 513–15. http://dx.doi.org/10.1252/jcej.23.513.

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38

El-Khaiary, Mohammad I. "Extraction of Al(iii) from phosphoric acid by HDDNSA." Separation and Purification Technology 12, no. 1 (1997): 13–16. http://dx.doi.org/10.1016/s1383-5866(97)00004-x.

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39

MORITA, Yasuji, and Masumitsu KUBOTA. "Extraction of Pentavalent Neptunium with Di-Isodecyl Phosphoric Acid." Journal of Nuclear Science and Technology 24, no. 3 (1987): 227–32. http://dx.doi.org/10.1080/18811248.1987.9735797.

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40

Skorovarov, J. I., L. I. Ruzin, A. V. Lomonosov, and G. K. Tselitschev. "Solvent extraction for cleaning phosphoric acid in fertilizer production." Journal of Radioanalytical and Nuclear Chemistry 229, no. 1-2 (1998): 111—A117. http://dx.doi.org/10.1007/bf02389457.

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41

Bendada, A., A. H. Meniai, and L. M. Bencheikh. "Modeling of Phosphoric Acid Purification by Liquid-Liquid Extraction." Chemical Engineering & Technology 24, no. 12 (2001): 1273–80. http://dx.doi.org/10.1002/1521-4125(200112)24:12<1273::aid-ceat1273>3.0.co;2-j.

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42

Chen, Ming, Jun Li, Yang Jin, Jianhong Luo, Xinhua Zhu, and Defang Yu. "Efficient solvent extraction of phosphoric acid with dibutyl sulfoxide." Journal of Chemical Technology & Biotechnology 93, no. 2 (2017): 467–75. http://dx.doi.org/10.1002/jctb.5377.

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43

El-Khaiary, Mohammad I. "Extraction of Fe(III) from phosphoric acid by HDDNSA." Chemical Engineering & Technology 20, no. 5 (1997): 338–41. http://dx.doi.org/10.1002/ceat.270200510.

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Takayama, R., K. Ooe, W. Yahagi, et al. "Solvent extraction of trivalent actinides with di(2-ethylhexyl) phosphoric acid." Proceedings in Radiochemistry 1, no. 1 (2011): 157–60. http://dx.doi.org/10.1524/rcpr.2011.0029.

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Abstract We carried out solvent extraction on the trivalent actinides of Am, Cm, Cf, and Fm and the lanthanides (except Pm) using di(2-ethylhexyl)phosphoric acid (HDEHP) in benzene by a batch method. The extraction constants of the HDEHP complexes for these elements were determined systematically under identical conditions. The tetrad effect was clearly observed in the variation of the extraction constants of the lanthanide series. We found that the extraction constant for Fm(III) is much smaller than that for Dy(III), which have similar ionic radii. The extraction constants for Am(III), Cm(II

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Cheremisina, Olga, Maria Ponomareva, Vasiliy Sergeev, Yulia Mashukova, and Daniil Balandinsky. "Extraction of Rare Earth Metals by Solid-Phase Extractants from Phosphoric Acid Solution." Metals 11, no. 6 (2021): 991. http://dx.doi.org/10.3390/met11060991.

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Nowadays, solving the problem of rational, integrated use of the mined raw materials, the transition to waste-free technologies for its processing is a crucial task. The sulfuric acid technology used for the processing of apatite concentrates on a large industrial scale does not provide the associated extraction of accompanying valuable components—rare earth metals (REM). During apatite concentrate processing, rare-earth metals are affected by the technology-related dispersion, being distributed between the insoluble leaching residue and phosphoric acid solution sent to the production of ferti

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Artamonov, Aleksandr V., Daria N. Smirnova, Nicolay N. Smirnov, and Aleksandr P. Ilyin. "EXTRACTION OF RARE EARTH ELEMENTS FROM SOLID WASTE OF PRODUCTION OF PHOSPHORIC ACID FOLLOWED BY SORPTION ON CATION EXCHANGE RESINS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 10 (2017): 87. http://dx.doi.org/10.6060/tcct.20176010.5571.

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The basis of production of extraction phosphoric acid is two simultaneous processes: dissolving phosphate raw material in a mixture of sulfuric and phosphoric (formed in the process) acids and crystallization of calcium sulfate (phosphogypsum). Phosphogypsum is an inevitable large-tonnage and cumbersome waste at sulfuric acid processing of apatite, which is of interest not only as a source of building gypsum, but also as an alternative rare earth raw material does not have a natural activity and containing rare-earth elements as a cerium and yttrium groups. As a raw material for the production

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M, Maxmilla, Changamu E, and Andala D. "Sustainable Generation of Phosphate Based Fertilizers by Extraction from Biogenic Apatite." Research & Reviews: Journal of Chemistry 10, no. 4 (2021): 9. https://doi.org/10.5281/zenodo.13142728.

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Phosphorus obtained from finite rock phosphate is one of the essential elements for food production and modern agriculture. Therefore, for sustainability of food supply and development in agriculture, management of phosphorus is key. Animal bones have a high concentration of phosphate that can be harvested and used in fertilizer production but they take many years to decompose and release the phosphate. This study set out to prepare bone phosphate enriched phosphoric acid from the otherwise discarded animal bones. Animal bones (predominantly cattle bones) were collected, washed, dried and cras

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Zhantasov, K. T., A. A. Kadirbayeva, N. D. Torebay, et al. "RESEARCH OF THE PROCESS OF SYNTHESIS OF DIAMMONIUM PHOSPHATE FROM EXTRACTIVE PHOSPHORIC ACID FROM BALANCED PHOSPHATESILICON SHAPES OF THE KARATAU BASIN." RASAYAN Journal of Chemistry 15, no. 02 (2022): 914–19. http://dx.doi.org/10.31788/rjc.2022.1526800.

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The article describes the process of obtaining extraction of phosphoric acid from phosphate-siliceous phosphorite shales of the Zhanatas deposit, by the sulfuric acid extraction method of obtaining EPA for use in the production of diammonium phosphate. Extraction decomposition of phosphorite by sulfuric acid proceeds with the formation of phosphogypsum and with fluorine released into the gas phase in the form of HF and SiF4 and processed into H2SiF6. The studies were carried out using circulating solutions of EPA with a concentration of 3.80-18.91% P2O5, phosphorite with a content of, (wt. %)

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Rao, Mingjun, Tao Zhang, Guanghui Li, et al. "Solvent Extraction of Ni and Co from the Phosphoric Acid Leaching Solution of Laterite Ore by P204 and P507." Metals 10, no. 4 (2020): 545. http://dx.doi.org/10.3390/met10040545.

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An alternative process of pre-roasting, phosphoric acid leaching followed by solvent extraction of a limonitic laterite ore was described in this work, with emphasis on the solvent extraction of Ni and Co from the phosphoric acid leaching solution by P204 and P507. First, the pH value of the leaching solution was adjusted using ammonia to reduce the content of Al3+ and Fe3+ by precipitation, then the content of Al3+, Fe3+ and Mn2+ were further decreased by extraction using P204. At last, Ni2+ and Co2+ were separated by three-stage extraction using P507. After extraction, the extraction ratio o

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Gorazda, Katarzyna, Zygmunt Kowalski, and Zbigniew Wzorek. "From sewage sludge ash to calcium phosphate fertilizers." Polish Journal of Chemical Technology 14, no. 3 (2012): 54–58. http://dx.doi.org/10.2478/v10026-012-0084-3.

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Our work presents the results of the research on the utilization of ashes after sewage sludge combustion comprising phosphorus recovery in the form of useful products. The investigations were divided into three parts: selecting the combustion parameters of sewage sludge, examining ash leaching with mineral acids (nitric and phosphoric) to high phosphorus selectivity assuring a low content of iron and heavy metals in the extracted solutions and precipitation of CaHPO4 .2H2O. Suitable temperature of a sewage sludge combustion enables selective extraction of phosphorus compounds from ash because

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