phosphorous content of apatite

Apatite Mineral Data

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The marine phosphorus cycle - PubMed Central (PMC)

May 21, 2013· Increasing the phosphorus content of substrates, thereby decreasing C:P ratios, leads to luxury phosphorus uptake by some isolates and net phosphorus remineralization by others In this sense, the rate of phosphorus remineralization will then depend on the stoichiometric demands and the diversity of bacterial populations...

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Efficient Fertilizer Use Guide Phosphorus | Mosaic Crop ,

The phosphorus content of soils is quite variable, , Inorganic forms of soil phosphorus consist of apatite (the original source of all phosphorus), complexes of iron and aluminum phosphates, and phosphorus absorbed onto clay particl The solubility of these phosphorus compounds as well as organic phosphorus is extremely low, and only very ....

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US5407080A - Apatite flotation reagent - Google Patents

This invention relates to apatite flotation reagents which can be used simultaneously with silica collectors in a coflotation process without problems of incompatibility between the apatite flotation reagent and the silica collectors The apatite flotation reagent includes soya lecithin The soya lecithin can be used as an apatite collector by itself or can be blended with a phosphate ester ....

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Phosphorus Transformation from Municipal Sewage Sludge ,

Phosphorus (P) is an essential and limited nutrient element for all life The recovery and reuse of P from municipal sewage sludge (MSS) incineration fly ash are considered to be practical and economical Addition of biomass into MSS was proposed to enhance the P bioavailability during incineration The speciation conversion of P during MSS incineration with different types of biomass was ....

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Apatite Control of Phosphorus Release to Runoff from Soils ,

apatite The Ca- and Mg-bound P accounted for about 95% of TP Runoff samples were undersaturated with respect to apatite A strong relationship between calculated apatite specific surface area and measured DP concentration in water extracts is supportive of other evidence that apatite dissolution is a major factor controlling P release from ....

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Apatite Gemstone Information - GemSelect

Apatite is the most common type of phosphate in the world and it is the main source for phosphorus, a chemical essential to bioenergetics and photosynthesis Apatite is composed of calcium phosphate, which is the same material that makes up teeth and bon Apatite can ,...

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APATITE (Calcium (Fluoro-, Chloro-, Hydroxyl-) Phosphate)

Apatite is actually three different minerals depending on the predominance of either fluorine, chlorine or the hydroxyl group These ions can freely substitute in the crystal lattice and all three are usually present in every specimen although some specimens have been close to in one or the other...

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Mechanism of phosphorus removal in beneficiation of high ,

20% of the apatite in the raw ore transferred into phosphorus and volatilized with the gas in the process of reduction roasting, while the rest 80% apatite was not involved in the reaction of generation of phosphorus, and remained as apatite in the roasted products, which was removed to tailings by grinding and magnetic separation...

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The Varied Uses and Forms of Apatite Will Raise Your Eyebrows

Apatite uses span across diverse fields and uses of apatite determine the different forms of it that we know - as a mineral, as a gemstone or as apatite crystals Uses of Apatite as Mineral As a mineral, apatite is chiefly used as a phosphorus source for the manufacture of fertilizers...

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Removal of phosphorus from iron ores by chemical leaching ,

The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron phase could not Sulfuric acid is the most effective among the three kinds of ac 9161% phosphorus removal was attained with 1% ,...

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phosphorus in apatite

They are an important constituent of phosphorite, a rock mined for its phosphorus content and used to make fertilizers, acids, and chemicals Apatite has a relatively consistent hardness and serves as the index mineral for a hardness of five in the Mohs Hardness Scale...

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Phosphorus Fertilizer: The Original and Commercial Sources ,

Earlier the original source of phosphorus (P) fertilizer was bones; as time passes, the supply of P fertilizer will get exhausted Today, rock phosphate is the only raw material in the form of P fertilizers There are two types of rock phosphates: igneous and sedimentary; both have the same phosphate mineral, ie, calcium phosphate of apatite group...

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The Crystal Structure of Apatite, Ca5(PO4)3(F,OH,Cl ,

As illustrated by the broad range of topics presented in this volume, the mineral apatite, Ca 5 (PO 4) 3 (F,OH,Cl), is of importance in a greater variety of fields than virtually any other mineral It is of particular significance in Earth science, life science, and material science; the foundation of this significance is the apatite atomic arrangement...

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Phosphorus removal from wastewater by mineral apatite ,

Phosphorus removal from wastewater by mineral apatite , 2010b) showed that other parameters affect the P removal efficiency, apatite content in the material considered being an important one ....

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Apatite - Wikipedia

The phosphorus content dropped from 082% to 006% and iron from 4365% to 6023% with 87% mass recovery Analysis showed that 20% of apatite reacted with SiO 2, Al 2 O 3 and carbon, generating elemental phosphorus in the form of gas About 80% of the phosphorus was incorporated into the slag and it was separated from the grinding and magnetic ....

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Apatite Gemstone Information - GemSelect

Apatite is the most common type of phosphate in the world and it is the main source for phosphorus, a chemical essential to bioenergetics and photosynthesis Apatite is composed of calcium phosphate, which is the same material that makes up teeth and bon Apatite can ,...

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Reaction Behavior of Phosphorus in Coal-Based Reduction of ,

the reaction behavior of phosphorus during the reduction process The phosphorus in the oolitic hematite ore exists as apatite, which is a double salt formed by Ca3(PO4)2 and CaF2, CaCl2, or Ca(OH)2 The reduction of apatite to phosphorus, the enrichment of phosphorus in reduced iron....

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Phosphorus - Oregon State University

Sources for lakes Phosphorus content of parent geology is highly variable Pollution from detergents is a major source of phosphorus Sodium pyrophosphates and polyphosphates are added to complex with cations and inactivate them to enhance cleaning action (related to hardness)...

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Apatite Mineral | Physical - Optical Properties ,

Phosphate rock and phosphorite are names used for sedimentary rocks that contain at least 15% to 20% phosphate on the basis of weight The phosphorous content in these rocks is mainly derived from the presence of apatite minerals Uses of Apatite as Phosphate Rock...

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Phosphorous availability influences the dissolution of ,

ABSTRACT Apatite (Ca 10 (PO 4) 6 (OH,F,Cl) 2) is the primary inorganic source of phosphorus in the biosphereSoil fungi are known to increase plant-available phosphorus by promoting dissolution of various phosphate minerals Yet no apatite dissolution studies exist using fungi as weathering agents, and regulation of fungal weathering activity in response to different levels of phosphorus ....

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Phosphorus K-edge XANES spectroscopy of mineral standards

Mar 01, 2011· 31 Apatite-group minerals Information and spectra for apatite-group minerals are presented in Table 1 and Fig 1 , respectivelyApatite is a common phosphate-bearing mineral, found in igneous, sedimentary and metamorphic rocks (Deer et al, 1992 ; Chang et al, 1996 )Precipitation of apatite is a significant removal mechanism for phosphorus in various natural and anthropogenic ,...

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Bones Need Both Calcium and Phosphorus

Mar 20, 2002· March 20, 2002 -- Calcium alone can't build strong bones and tissu New research shows calcium needs phosphorus to maximize its bone ,...

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Properties of Apatite - CrystalBenefits

Nov 18, 2018· Apatite is a phosphate mineral that happens to be the main source of phosphorous to plants It consists of three types depending on the predominant ion (OH - , F - , or Cl - ) present in the crystal lattice called Hydroxylapatite Fluorapatite and Chlorapatite...

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Occurrence of phosphorus minerals in Australian coal seams ,

Independent data on phosphorus content were available for many of the samples, but where such data were not available the proportion of P2Os in each HTA was recalculated to give the percentage of phosphorus in the respective air-dried coal Data on the phosphorus content for the individual ply samples are given in Table 2...

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The marine phosphorus cycle - PubMed Central (PMC)

May 21, 2013· Increasing the phosphorus content of substrates, thereby decreasing C:P ratios, leads to luxury phosphorus uptake by some isolates and net phosphorus remineralization by others In this sense, the rate of phosphorus remineralization will then depend on the stoichiometric demands and the diversity of bacterial populations...

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Features of apatite in kimberlites from Ekati Diamond Mine ,

Crystallization of apatite from kimberlite magma is controlled by reaching phosphorous saturation and only occurred in Leslie, Panda and Grizzly (as rims on xenocrysts) Preservation of xenocrystal apatite in Koala could explain lower phosphorous content in the magma, insufficient for the crystallization of kimberlitic apatite...

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Utilization of Apatite Ores | IntechOpen

Phosphate rock is an important mineral commodity used in the chemical industry and production of food The first section of ninth chapter of this book introduces utilization of apatite ores for manufacturing of phosphorus The second part deals with production of phosphoric acid via wet and thermal process and utilization of byproducts such as phosphogypsum, phosphorous slag and ferrophosphorus...

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Physical and chemical characterization of selected natural ,

Abstract Several natural calcium-phosphate apatites, chosen to be representative of the apatite which enters aquatic environments in ground water, runoff and erosion material, were characterized by X-ray diffraction and chemical analys...

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Phosphorus Transformation from Municipal Sewage Sludge ,

Phosphorus (P) is an essential and limited nutrient element for all life The recovery and reuse of P from municipal sewage sludge (MSS) incineration fly ash are considered to be practical and economical Addition of biomass into MSS was proposed to enhance the P bioavailability during incineration The speciation conversion of P during MSS incineration with different types of biomass was ....

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