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Journal articles on the topic 'Phosphorus – Solubility'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 June 2025

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1

Wu, X. S., Z. Y. Zhai, Y. H. Fan, et al. "The solubility of phosphorus in GaN." Applied Surface Science 250, no. 1-4 (2005): 182–87. http://dx.doi.org/10.1016/j.apsusc.2004.12.046.

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2

Yakymchuk, Chris, and Antonio Acosta-Vigil. "Geochemistry of phosphorus and the behavior of apatite during crustal anatexis: Insights from melt inclusions and nanogranitoids." American Mineralogist 104, no. 12 (2019): 1765–80. http://dx.doi.org/10.2138/am-2019-7054.

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Abstract The solubility of apatite in anatectic melt plays an important role in controlling the trace-element compositions and isotopic signatures of granites. The compositions of glassy melt inclusions and nanogranitoids in migmatites and granulites are compared with the results of experimental studies of apatite solubility to evaluate the factors that influence apatite behavior during prograde suprasolidus metamorphism and investigate the mechanisms of anatexis in the continental crust. The concentration of phosphorus in glassy melt inclusions and rehomogenized nanogranitoids suggests a stro

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3

Nahm, K. H. "Additives to reduce phosphorus excretion and phosphorus solubility in poultry and swine manure." Australian Journal of Experimental Agriculture 44, no. 8 (2004): 717. http://dx.doi.org/10.1071/ea02143.

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In the past 20 years, scientists have realised that environmental contamination by non-point source nutrients is a significant problem and its control is not easily managed. Manure phosphorus was found to be a primary pollutant of surface water, so methods to reduce manure phosphorus runoff have been a research focus. This review concentrates on approaches developed to reduce the excretion of manure phosphorus and to reduce the soluble phosphorus content of manure by poultry and swine. Addition of phytase to poultry and swine diets reduces phosphorus excretion dramatically. For example, phytas

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4

Lin, Lu, Yan-Ping Bao, Min Wang, and Xiang Li. "Effect of MgO and MnO on Phosphorus Utilization in P-Bearing Steelmaking Slag." High Temperature Materials and Processes 35, no. 4 (2016): 425–32. http://dx.doi.org/10.1515/htmp-2014-0186.

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AbstractIn order to recycle the phosphorus in P-bearing converter slag and make it used as slag phosphate fertilizer, the effect of MgO and MnO in P-bearing steelmaking slag on phosphorus existence form, P2O5 solubility and magnetic separation behavior were researched systematically. The results show that the phosphorus in slag is mainly in the form of n2CaO · SiO2–3CaO · P2O5 (for short nC2S–C3P) solid solution in the P-rich phase for CaO-SiO2-FetO-P2O5-X (X stands for MgO and MnO, respectively). And the increasing of MgO and MnO content has no influence on precipitation of nC2S–C3P solid sol

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5

O'Connor, G. A., K. L. Knudtsen, and G. A. Connell. "Phosphorus Solubility in Sludge-amended Calcareous Soils." Journal of Environmental Quality 15, no. 3 (1986): 308–12. http://dx.doi.org/10.2134/jeq1986.00472425001500030022x.

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6

Walker, Sean E., and Mark E. Schlesinger. "Solubility of red phosphorus in molten lead." Journal of Chemical Thermodynamics 27, no. 1 (1995): 53–56. http://dx.doi.org/10.1006/jcht.1995.0006.

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7

Eremyashev, Viacheslav E., Galina G. Korinevskaya, and Dmitry A. Zherebtsov. "Effect of Phosphorus on Crystallization of Alkaline Molybdenum-Containing Borosilicate Glasses." Defect and Diffusion Forum 410 (August 17, 2021): 720–24. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.720.

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The effect of additives of P2O5 on the solubility of molybdenum in the amorphous part of glass and on the phase composition of the crystallized part of the highly alkaline glasses of the Li2O–(Na2O–K2O)–B2O3-SiO2 system was studied. The comparison of the phase composition of samples with or without phosphorus prior and after annealing allowed to determine the change of solubility of molybdenum in the amorphous part of the samples and to evaluate the thermal stability of the synthesized glass-ceramic materials. It was found, that for the compositions without phosphorus and the samples without l

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8

Fang, Nana, Shuai Liang, Huimin Dai, Hongye Xiao, Xiaomeng Han, and Guodong Liu. "The Improved Phosphorus Solubility of Mechanochemically Activated Phosphate Rock and Its Effect on Soil-Available Phosphorus in Weakly Acidic Soil." Sustainability 14, no. 13 (2022): 7869. http://dx.doi.org/10.3390/su14137869.

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Mechanochemical treatment is an effective and ecological way to treat medium and low-grade phosphate rock (PR) for fertilizer. To explore the phosphorus (P) solubility mechanisms of mechanochemically activated phosphate rock (MAPR) and its P supply capacity, we investigated the chemical properties and infrared spectroscopy (IR) characteristics of different types of MAPR and soil-available P using the chemical extraction method (2% citric acid), IR analysis and soil incubation experiment in this study. The results showed that the P solubility of magmatic, metamorphic and sedimentary types of MA

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9

Parés Viader, Raimon, Pernille Erland Jensen, Lisbeth M. Ottosen, Tobias P. Thomsen, Jesper Ahrenfeldt, and Henrik Hauggaard-Nielsen. "Comparison of phosphorus recovery from incineration and gasification sewage sludge ash." Water Science and Technology 75, no. 5 (2016): 1251–60. http://dx.doi.org/10.2166/wst.2016.620.

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Incineration of sewage sludge is a common practice in many western countries. Gasification is an attractive option because of its high energy efficiency and flexibility in the usage of the produced gas. However, they both unavoidably produce sewage sludge ashes, a material that is rich in phosphorus, but which is commonly landfilled or used in construction materials. With current uncertainty in phosphate rock supply, phosphorus recovery from sewage sludge ashes has become interesting. In the present work, ashes from incineration and gasification of the same sewage sludge were compared in terms

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10

Isakova, Oygul M., Zokirjon Turayev, Ziyoda Sh Ergasheva, Manzura G. Mamayunusova, and Muboshir X. Ikramov. "Solubility in manganese sulfate-ammonium sulfate-water system." E3S Web of Conferences 486 (2024): 05019. http://dx.doi.org/10.1051/e3sconf/202448605019.

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The production of phosphorus-containing fertilizers involves the use of mineral acids and phosphate raw materials. In the production process and finished fertilizers, the existence of calcium phosphates, ammonium, sulfuric or nitric and phosphoric acids is possible. Enriched superphosphate contains monocalcium phosphate, calcium sulfate dihydrate, phosphoric acid. During ammoniation, monoammonium phosphate can also be formed. The solubility of the components in the manganese sulfate-ammonium sulfate-water system was studied by the visual-polythermal method in the temperature range from -1.0°С

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11

Ahmedbeyli, R. M. "The effect of fluoridated and iodized salt consumption by schoolchildren on acid solubility of permanent teeth enamel." Kazan medical journal 97, no. 3 (2016): 359–63. http://dx.doi.org/10.17750/kmj2016-359.

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Aim. To study the acid solubility of enamel based on calcium and phosphorus from the enamel surface layer to the acid biopsy and test of enamel resistance indicators in school-age children in the presence of biogeochemical fluoride and iodide deficiency, as well as the changes in these parameters amid the 3-year fluoridated and iodized salt consumption.Methods. Enamel solubility on calcium and phosphorus was evaluated based on calcium and phosphorus release from surface layer of permanent teeth enamel into acid biopsy. Test of enamel resistance was determined by V.R. Okushko method. The color

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12

Tõnsuaadu, Kaia, Juha Kallas, Toivo Kallaste, et al. "Estonian Phosphate Rock Dissolution in Hydrochloric Acid: Optimization of Acid Dosage and Concentration." Minerals 13, no. 4 (2023): 578. http://dx.doi.org/10.3390/min13040578.

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The increasing need for phosphorus and rare earth elements (REEs) has initiated the studies of new mineral deposits and new complex processing technologies. Estonian phosphate rock (EPR) resources, which are not in use, are estimated to be more than 3 billion metric tons or 800 million tons of P2O5. The experiments of dissolution of three different EPR samples in hydrochloric acid were carried out with the aim of studying the impact of the chemical and mineralogical composition of EPR on the leaching process. The leaching of P, Ca, Mg, and consumption of H+ ions depend on HCl concentration and

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13

Suchyta, Dakota J., Robert J. Soto, and Mark H. Schoenfisch. "Selective monophosphorylation of chitosan via phosphorus oxychloride." Polymer Chemistry 8, no. 16 (2017): 2552–58. http://dx.doi.org/10.1039/c7py00123a.

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14

Караулова, А. Н., та К. Г. Карапетян. "ОБЗОР МЕТОДОВ ОПРЕДЕЛЕНИЯ растворимости плавленых фосфорно-магниевых удобрений". Южно-Сибирский научный вестник, № 2(60) (30 квітня 2025): 95–103. https://doi.org/10.25699/sssb.2025.60.2.019.

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Исследование растворимости плавленых фосфорно-магниевых удобрений (ПФМУ) представляет собой актуальную задачу в связи с их химическим составом и структурой, представляющей аморфную стеклообразную фазу, и широкой перспективой применения в сельскохозяйственной отрасли. Определение растворимости плавленых фосфорно-магниевых удобрений является актуальной задачей, поскольку это позволяет прогнозировать доступность питательных веществ для растений и углубленно изучить механизмы взаимодействия, являющиеся одним из основополагающих параметров при получении удобрений. Целью данной работы является изуче

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15

Hartikainen, Helinä, and Markku Yli-Halla. "Solubility of soil phosphorus as influenced by urea." Zeitschrift für Pflanzenernährung und Bodenkunde 159, no. 4 (1996): 327–32. http://dx.doi.org/10.1002/jpln.1996.3581590403.

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16

Nasri, Khouloud, Chaker Chtara, Hassen Chekir, and Hafed EL Feki. "Solubility Study and purification Of Industrial triple superphosphate in aqueous solution." JOURNAL OF ADVANCES IN CHEMISTRY 9, no. 2 (2013): 1943–52. http://dx.doi.org/10.24297/jac.v9i2.2348.

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Triple Superphosphate (TSP) is a chemical fertilizer, acknowledged by its important content of phosphorus, necessary element for plants. It’s obtained by adding phosphoric acid to phosphate ore, consisting of calcium phosphate containing many impurities. TSP was dissolved at different temperatures and in various amounts of water, filtered to remove insoluble compounds. Then the ionic conductivity was monitored for each solution as a function of the added amount of TSP. Aqueous solutions were evaporated to dryness and analyzed the P2O5. The starting materials and final products were analyzed by

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17

Roberts, William M., Rachel A. Matthews, Martin S. A. Blackwell, et al. "Microbial biomass phosphorus contributions to phosphorus solubility in riparian vegetated buffer strip soils." Biology and Fertility of Soils 49, no. 8 (2013): 1237–41. http://dx.doi.org/10.1007/s00374-013-0802-x.

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18

Manimel Wadu, Mihiri C. W., Tee Boon Goh, and Olalekan O. Akinremi. "Response of Manitoba soils to banding phosphorus with sulfate or carbonate salts." Canadian Journal of Soil Science 96, no. 4 (2016): 447–60. http://dx.doi.org/10.1139/cjss-2015-0083.

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Applications of sulfate and carbonate salts have been shown to improve the solubility of phosphorus (P) in model calcareous soils. It is unclear how these treatments will influence P solubility in real soils. The objective of this study was to determine the effect of sulfate or carbonate salts on P solubility in selected Manitoba soils. We hypothesized that the application of carbonate or sulfate salts in a fertilizer band could enhance the solubility of P in Manitoba soils. Different salt mixtures were prepared by mixing either monopotassium phosphate (MPP) or monoammonium phosphate (MAP) wit

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19

Ramos, Sílvio Júnio, Valdemar Faquin, Carlos Ribeiro Rodrigues, Carlos Alberto Silva, and Paulo Fernandes Boldrin. "Biomass production and phosphorus use of forage grasses fertilized with two phosphorus sources." Revista Brasileira de Ciência do Solo 33, no. 2 (2009): 335–43. http://dx.doi.org/10.1590/s0100-06832009000200011.

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A major constraint to agricultural production in acid soils of tropical regions is the low soil P availability, due to the high adsorption capacity, low P level in the source material and low efficiency of P uptake and use by most of the modern varieties grown commercially. This study was carried out to evaluate the biomass production and P use by forage grasses on two soils fertilized with two P sources of different solubility. Two experiments were carried out, one for each soil (Cambisol and Latosol), using pots filled with 4 dm³ soil in a completely randomized design and a 4 x 2 factorial s

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20

Tsai, Chun-Hsiung, Chandrashekhar P. Savant, Mohammad Javad Asadi, et al. "Efficient and stable activation by microwave annealing of nanosheet silicon doped with phosphorus above its solubility limit." Applied Physics Letters 121, no. 5 (2022): 052103. http://dx.doi.org/10.1063/5.0099083.

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The relentless scaling of semiconductor devices pushes the doping level far above the equilibrium solubility, yet the doped material must be sufficiently stable for subsequent device fabrication and operation. For example, in epitaxial silicon doped above the solubility of phosphorus, most phosphorus dopants are compensated by vacancies, and some of the phosphorus-vacancy clusters can become mobile around 700 °C to further cluster with isolated phosphorus ions. For efficient and stable doping, we use microwave annealing to selectively activate metastable phosphorus-vacancy clusters by interact

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21

Dayton, Elizabeth A., Shane D. Whitacre, and Christopher H. Holloman. "Demonstrating the relationship between soil phosphorus measures and phosphorus solubility: Implications for Ohio phosphorus risk assessment tools." Journal of Great Lakes Research 40, no. 3 (2014): 473–78. http://dx.doi.org/10.1016/j.jglr.2014.04.001.

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22

Verkhovykh, A. V., A. A. Mirzoev, and D. A. Mirzaev. "Interaction of Phosphorus with Impurity Atoms in BCC Iron." Solid State Phenomena 284 (October 2018): 627–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.627.

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The paper presents the results of modelling of phosphorus interaction with substitutional (Cr, Mn, P) and interstitial (C) impurity atoms in bcc iron in the framework of density functional theory using WIEN2k software. It is found that a repulsion exists of a phosphorus atom in the three first spheres of coordination of carbon, chromium and phosphorus atoms, while for manganese such repulsion of phosphorus takes place only in the second sphere. This repulsion is a consequence of an abrupt change of magnetic moment of manganese atom, so the solution energy of phosphorus almost does not change.

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23

Ige, D. V., O. S. Abioye, O. O. Akinremi, C. M. Nyachoti, and D. N. Flaten. "Phosphorus solubility in Manitoba soils treated with pig manure from phytase supplemented diets." Canadian Journal of Soil Science 91, no. 6 (2011): 947–55. http://dx.doi.org/10.4141/cjss2011-031.

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Ige, D. V., Abioye, O. S., Akinremi, O. O., Nyachoti, C. M. and Flaten, D. N. 2011. Phosphorus solubility in Manitoba soils treated with pig manure from phytase supplemented diets. Can. J. Soil Sci. 91: 947–955. Phytase supplementation has been shown to reduce manure P content. However, this manipulation can influence manure P solubility upon land application. Therefore, the objectives of this study were to investigate the solubility of P in soils amended with manure from diets with reduced or no inorganic P supplement with and without phytase addition and to evaluate the influence of soil typ

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24

SHOHOJI, Nobumitsu. "Statistical thermodynamic analysis of phosphorus solubility in molten iron." Transactions of the Iron and Steel Institute of Japan 26, no. 3 (1986): 194–97. http://dx.doi.org/10.2355/isijinternational1966.26.194.

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25

Leytem, April B., Benjamin L. Turner, Victor Raboy, and Kevin L. Peterson. "Linking Manure Properties to Phosphorus Solubility in Calcareous Soils." Soil Science Society of America Journal 69, no. 5 (2005): 1516–24. http://dx.doi.org/10.2136/sssaj2004.0315.

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26

Stout, William L., Andrew N. Sharpley, and Harry B. Pionke. "Reducing Soil Phosphorus Solubility with Coal Combustion By‐Products." Journal of Environmental Quality 27, no. 1 (1998): 111–18. http://dx.doi.org/10.2134/jeq1998.00472425002700010016x.

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27

MacMahon, P., P. D. Mayne, M. Blair, C. Pope, and I. Z. Kovar. "Calcium and phosphorus solubility in neonatal intravenous feeding solutions." Archives of Disease in Childhood 65, no. 4 Spec No (1990): 352–53. http://dx.doi.org/10.1136/adc.65.4_spec_no.352.

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28

Komiyama, Teppei, Seiichi Niizuma, Eiji Fujisawa, and Hiromasa Morikuni. "Phosphorus compounds and their solubility in swine manure compost." Soil Science and Plant Nutrition 59, no. 3 (2013): 419–26. http://dx.doi.org/10.1080/00380768.2013.789397.

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29

Drwal, Laureen A., Emily B. Cochran, and Richard A. Helms. "Solubility of calcium and phosphorus in parenteral nutrition solutions." Journal of Pediatrics 116, no. 2 (1990): 319–20. http://dx.doi.org/10.1016/s0022-3476(05)82911-7.

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30

HUA, Quan-Xian, Jian-Yun LI, Jian-Min ZHOU, Huo-Yan WANG, Chang-Wen DU, and Xiao-Qin CHEN. "Enhancement of Phosphorus Solubility by Humic Substances in Ferrosols." Pedosphere 18, no. 4 (2008): 533–38. http://dx.doi.org/10.1016/s1002-0160(08)60044-2.

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31

Jalali, Mohsen, and Mahdi Jalali. "Minerals control phosphorus solubility in long-term-cultivated calcareous soils." Soil Research 55, no. 2 (2017): 182. http://dx.doi.org/10.1071/sr16057.

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Little information is available on phosphorus (P) solubility in long-term cultivated calcareous soils. Improved characterisation of P-containing minerals and soil P species in calcareous soils leads to better management of crop production, water quality and soil quality. In this study, we investigated the solubility relationships of P for 20 surface-soil samples from Hamedan, western Iran, with a wide range of physical and chemical properties. Two equilibration times (0.5 and 168h) were used to evaluate the effect of equilibration times on P activities. We observed up to 67% decrease in mean P

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32

Ohno, Tsutomu, Syuntaro Hiradate, and Zhongqi He. "Phosphorus Solubility of Agricultural Soils: A Surface Charge and Phosphorus-31 NMR Speciation Study." Soil Science Society of America Journal 75, no. 5 (2011): 1704–11. http://dx.doi.org/10.2136/sssaj2010.0404.

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33

Tarrago, M., M. Garcia-Valles, S. Martínez, and D. R. Neuville. "Phosphorus solubility in basaltic glass: Limitations for phosphorus immobilization in glass and glass-ceramics." Journal of Environmental Management 220 (August 2018): 54–64. http://dx.doi.org/10.1016/j.jenvman.2018.04.079.

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34

Lahori, A. H., K. S. Memon, M. Memon, et al. "ENHANCING PHOSPHORUS SOLUBILITY FROM ROCK PHOSPHATE INTEGRATED WITH FARMYARD MANURE IN P-DEFICIENT SOIL." Labour protection problems in Ukraine 35, no. 2 (2019): 8–14. http://dx.doi.org/10.36804/nndipbop.35-2.2019.8-14.

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The aim of this study was to assess the solubility of phosphorus from rock phosphate incubated with farmyard manure under laboratory condition. The treatments were factorial combination of three rates each of RP (0, 2, and 4 tons ha-1) and farm yard manure (0, 10 and 20 tons ha-1). These treatments were applied to 100 g soil contained in plastic vials with three replications. Seven such sets of 27 vials each were prepared to represent seven incubation periods namely 0, 15, 30, 45, 60, 75, and 90 days. The results showed that Olsen -P improved significantly with increasing rate of rock phosphat

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35

S.H.S. Senarathne. "The Influence of Vermicomposting Technology on Solubility of Eppawala Rock Phosphate." CORD 34, no. 2 (2018): 9. http://dx.doi.org/10.37833/cord.v34i2.15.

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The application of Eppawala Rock Phosphate (ERP) could be an economic alternative to the use of imported phosphorus fertilizer for certain annual as well as perennial crops like coconut in acid soils. But, its low solubility limits direct application. For Vermicomposting technology, which is a biodegradation process of plant and animal waste materials through earthworms, has been tested for increasing the solubility of ERP. Fresh Gliricidia leaves, fresh cow dung and grasses were mixed 1:2:1 ratio as the basic composting mixture and ERP was mixed at the ratio of 10% and 20% to the composting m

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36

Schwartz, Alan W. "Phosphorus in prebiotic chemistry." Philosophical Transactions of the Royal Society B: Biological Sciences 361, no. 1474 (2006): 1743–49. http://dx.doi.org/10.1098/rstb.2006.1901.

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The prebiotic synthesis of phosphorus-containing compounds—such as nucleotides and polynucleotides—would require both a geologically plausible source of the element and pathways for its incorporation into chemical systems on the primitive Earth. The mineral apatite, which is the only significant source of phosphate on Earth, has long been thought to be problematical in this respect due to its low solubility and reactivity. However, in the last decade or so, at least two pathways have been demonstrated which would circumvent these perceived problems. In addition, recent results would seem to su

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37

He, Qiu-Xia, Liang Tang, Teng Fu, Yue-Quan Shi, Xiu-Li Wang, and Yu-Zhong Wang. "Novel phosphorus-containing halogen-free ionic liquids: effect of sulfonate anion size on physical properties, biocompatibility, and flame retardancy." RSC Advances 6, no. 57 (2016): 52485–94. http://dx.doi.org/10.1039/c6ra09515a.

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Phosphorus-containing sulfonate ILs with different anions size present different thermal stability, solubility, viscosity, melting points, and cytotoxicity. They show flame retardant effect for PA6 via accelerating decomposition of matrix.

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38

Guan, Wei, Fangying Ji, Qingkong Chen, Peng Yan, and Weiwei Zhou. "Influence of Hydrothermal Temperature on Phosphorus Recovery Efficiency of Porous Calcium Silicate Hydrate." Journal of Nanomaterials 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/451984.

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Porous calcium silicate hydrate (PCSH) was synthesized by carbide residue and white carbon black. The influence of hydrothermal temperature on phosphorus recovery efficiency was investigated by Field Emission Scanning Electron Microscopy (FESEM), Brunauer-Emmett-Teller (BET), and X-Ray Diffraction (XRD). Hydrothermal temperature exerted significant influence on phosphorus recovery performance of PCSH. Hydrothermal temperature 170°C for PCSH was more proper to recover phosphorus. PCSH could recover phosphorus with content of 18.51%. The law of Ca2+and OH−release was the key of phosphorus recove

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39

Kusumawati, Pipin, Priyanto Triwitono, Sri Anggrahini, and Yudi Pranoto. "Autoclaving and Alkaline Hydrolysis Effects on the Particle Size and Solubility of Grouper (<I>Epinephelus</I> sp.) Nano-calcium Powder in <I>In Vitro</I> Gastrointestinal Tract Simulation." Jurnal Ilmiah Perikanan dan Kelautan 14, no. 2 (2022): 176–202. http://dx.doi.org/10.20473/jipk.v14i2.36261.

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Highlight Research Autoclaving for 3x3 hours followed by alkaline hydrolysis (3x3AH) may lower nano-calcium particle size into 47.47 nm 3x3AH sample contain 30.73% calcium and 18.37% phosphorus 3x3AH sample created the best calcium solubility (26.14 %) in comparison to synthesized CaCO3 (14.34 %) Grouper nano-calcium powder includes trace quantities of organic content, such as protein and fat, which enhance calcium's solubility. Abstract Fish bone nano-calcium production may solve two challenges, providing calcium for lactose-intolerant people and recycling bone waste. Fish bone autoclaving pr

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40

Sun, Wen Ru, S. L. Yang, Z. G. Wei, Shou Ren Guo, and Zhuang Qi Hu. "Some Behaviors of Phosphorus in Several Typical Superalloys." Materials Science Forum 539-543 (March 2007): 3053–58. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.3053.

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The effect of phosphorus in some typical wrought superalloys including IN718, GH761 and GH4133 has been studied. Phosphorus was not dissolved in the γ matrix of superalloys and was segregated in the residual liquids seriously during solidification, and the solidification of the alloys added with phosphorus was always finished by the precipitation of a phosphorus bearing phase. Two factors controlling the segregation tendency of a minor element were determined, one is the solubility of the element in the matrix, another is the precipitation temperature of a phase in which the element is absorbe

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41

Li, Bofu, Benjamin F. Trueman, Mohammad Shahedur Rahman, Yaohuan Gao, Yuri Park, and Graham A. Gagnon. "Understanding the impacts of sodium silicate on water quality and iron oxide particles." Environmental Science: Water Research & Technology 5, no. 8 (2019): 1360–70. http://dx.doi.org/10.1039/c9ew00257j.

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Silicates represent an alternative drinking water treatment for colour and turbidity due to iron. They may avoid the drawbacks of polyphosphates: increased lead solubility, the potential for increased bacterial growth, and phosphorus in wastewater.

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42

Okajima, Idzumi, Kaichi Ito, Yusuke Aoki, Chang Yi Kong, and Takeshi Sako. "Extraction of Rice Bran Oil Using CO2-Expanded Hexane in the Two-Phase Region." Energies 15, no. 7 (2022): 2594. http://dx.doi.org/10.3390/en15072594.

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The performance of CO2-expanded hexane in the vapor-liquid two-phase region was examined to extract phosphorus-free bio-oil from rice bran. Previously, it was found that in the uniform liquid phase region, it is difficult to maintain the phosphorus concentration at a stable and low level when the CO2 mole fraction changed slightly. To overcome this issue, the dependences of the phosphorus and free fatty acid concentrations, the oil solubility, and the oil yield on the CO2 mole fraction in the CO2-expanded hexane were measured at 25 °C, 5.1–5.2 MPa, and at a CO2 mole fraction of 0.88–0.94 in th

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43

WAIGWA, M. W., C. O. OTHIENO, and J. R. OKALEBO. "PHOSPHORUS AVAILABILITY AS AFFECTED BY THE APPLICATION OF PHOSPHATE ROCK COMBINED WITH ORGANIC MATERIALS TO ACID SOILS IN WESTERN KENYA." Experimental Agriculture 39, no. 4 (2003): 395–407. http://dx.doi.org/10.1017/s0014479703001248.

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Most of the agricultural lands in the highlands of western Kenya are depleted of plant nutrients, particularly phosphorus. This depletion has resulted in a continued decline in crop production in the area. Recent experiments, in which direct application of indigenous phosphate rocks were evaluated, have yielded variable results, depending on the relative reactivity of the rock phosphate tested. The effectiveness of rock phosphate was generally low compared with fertilizers such as triple super phosphate. This is attributed to the relatively low solubility of the rocks as opposed to the readily

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Claver, Numviyimana, Warchol Jolanta, Izydorczyk Grzegorz, Baśladyńska Sylwia, and Chojnacka Katarzyna. "Struvite production from dairy processing wastewater: Optimizing reaction conditions and effects of foreign ions through multi-response experimental models." Journal of the Taiwan Institute of Chemical Engineers 117 (December 3, 2020): 182–89. https://doi.org/10.1016/j.jtice.2020.11.031.

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Phosphorus purification by struvite precipitation from dairy wastewater is affected by existing competitive ions. The latter exhibit inhibitory properties against struvite precipitation due to the lower solubility properties of their phosphate salts. The current experimental work investigated the main conditions of pH and optimum ratio of dosage that enhances both phosphorus recovery and struvite precipitation from dairy wastewater. The products were evaluated and compared for quality as fertilizers where struvite demonstrated better nutrient availability.

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Pierzynski, G. M., T. J. Logan, and S. J. Traina. "Phosphorus Chemistry and Mineralogy in Excessively Fertilized Soils: Solubility Equilibria." Soil Science Society of America Journal 54, no. 6 (1990): 1589–95. http://dx.doi.org/10.2136/sssaj1990.03615995005400060013x.

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Turner, Benjamin L. "Storage-Induced Changes in Phosphorus Solubility of Air-Dried Soils." Soil Science Society of America Journal 69, no. 3 (2005): 630–33. http://dx.doi.org/10.2136/sssaj2004.0295.

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Sharpley, Andrew N., Richard W. McDowell, and Peter J. A. Kleinman. "Amounts, Forms, and Solubility of Phosphorus in Soils Receiving Manure." Soil Science Society of America Journal 68, no. 6 (2004): 2048–57. http://dx.doi.org/10.2136/sssaj2004.2048.

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Mikhak, Azadeh, Akbar Sohrabi, Mohammad Zaman Kassaee, and Mohammad Feizian. "Effect of Nanoclinoptilolite/Nanohydroxyapatite mixtures on phosphorus solubility in soil." Journal of Plant Nutrition 41, no. 10 (2018): 1227–39. http://dx.doi.org/10.1080/01904167.2018.1427268.

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Elliott, H. A., G. A. O'Connor, P. Lu, and S. Brinton. "Influence of Water Treatment Residuals on Phosphorus Solubility and Leaching." Journal of Environmental Quality 31, no. 4 (2002): 1362–69. http://dx.doi.org/10.2134/jeq2002.1362.

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Rantala, Pirjo-Riitta, and Hannu Wirola. "Solid, slightly soluble phosphorus compounds as nutrient source in activated sludge treatment of forest industry wastewaters." Water Science and Technology 35, no. 2-3 (1997): 131–38. http://dx.doi.org/10.2166/wst.1997.0500.

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The aim of the study was to determine if solid, slightly soluble compounds can be used as nutrient source in activated sludge treatment plants instead of liquid phosphoric acid. Four different solid materials were tested in lab-scale solubility tests to find compounds which are least soluble. Two materials were chosen for further studies: apatite and raw phosphate. The use of apatite and raw phosphate as nutrient source was studied in lab-scale activated sludge reactors along with a control reactor where phosphorus was added in liquid form. The phosphorus dosage, measured as elementary phospho

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