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phosphorus in goethite
Bio-extraction of phosphorus from goethite ore with alkali
2019-9-1 In current study, bio-extraction of phosphorus from goethite ore by naturally existed alkaline-tolerant microorganisms was investigated. The microbial growth, medium
Characterisation of phosphorus and other impurities in
2019-11-1 Phosphorus was mainly located within the various goethite types (Table 2) with hydrohematite and clays containing minor amounts. Rare apatite associated with
Characterisation of phosphorus and other impurities in
Goethite grains containing high levels of phosphorus are abundant in many iron ores and can be difficult to remove without also discarding valuable iron-containing
Characterization of Phosphate Adsorption on Goethite
2020-6-26 Keywords: goethite, phosphate, sorption, kinetics, isotherm 1. Introduction Phosphorus is of central concern to a wide variety of biological and chemical processes
Frontiers Goethite-Bound Phosphorus in an Acidic
2020-8-7 Phosphorus was lost from the mesh bags to a larger extent than Fe, suggesting that P was directly released from mineral surfaces. The P release was attributed to
Phosphate adsorption on goethite (α-FeOOOH) Nature
Infrared studies 1,2 have now firmly established that phosphate on goethite and other iron oxides results in a bridging binuclear complex of the type Fe–O–P–O–Fe.
Phosphate adsorption on synthetic goethite and
2006-6-15 The removal of phosphate from NaH 2 PO 4 solutions with different concentrations on goethite and akaganeite was carried out and the results are shown in Fig. 4. The
(PDF) Phosphate adsorption on goethite (??-FeOOOH)
Infrared studies1,2 have now firmly established that phosphate on goethite and other iron oxides results in a bridging binuclear complex of the type Fe–O–P–O–Fe.
(PDF) Inhibition of Phosphorus Adsorption to Goethite and
A serie of phosphorus solution of 0.1-0.75 mM phosphorus and 0.1 and 0.3 g L⁻¹ humic acids was added to 1 g L⁻¹ goethite suspension in background electrolyte of
Goethite modified biochar as a multifunctional
2020-2-20 Cadmium (Cd) and arsenic (As) are two of the most common heavy metals found in environment (Wang et al., 2019), roxarsone (ROX, C 6 H 6 AsNO 6) is one of the most
Characterization of Phosphate Adsorption on Goethite
2020-6-26 Keywords: goethite, phosphate, sorption, kinetics, isotherm 1. Introduction Phosphorus is of central concern to a wide variety of biological and chemical processes in natural waters. It is often the growth-limiting factor for biomass production. It is the least available of the major nutrients due to the
The Binding of Phosphorus Species at Goethite: A Joint
The phosphorus (P) adsorption capacity of soil is a crucial factor affecting the P-immobilization process and thus soil fertility, and fate of P in natural environments [1,2,3,4].This adsorption capacity, defined as the amount of adsorbed substance (adsorbate), reached in a saturated solution for a specific adsorbent [], is fundamentally influenced by the diverse interactions of P with soil
Phosphate complexation at the surface of goethite
2018-6-10 Phosphate complexation at the surface of goethite Nils Nilsson *,Lars Lovgren and Staffan Sjoberg Department of Inorganic Chemistry, University of Umea, S-90187 Umea, Sweden Abstract Phosphate complexation at the goethite-water interface has been studied in 0.1 M Na(NOa} medium at 298.2 K in the range 3.0 < -log[H+] < 9.0.
Availability to plants of phosphate adsorbed on goethite
The model was tested against observed availability of sorbed phosphate estimated from uptake by plants growing in phosphorus‐deficient conditions. The plants were grown on quartz sand coated with goethite on which phosphate was adsorbed, and which was mixed with nutrient solution.
Inhibition of phosphorus sorption to goethite, gibbsite
2007-5-15 The direct effects of dissolved organic matter (DOM) on the sorption of orthophosphate onto gibbsite, goethite, and kaolin were examined using a one-point phosphorus sorption index and the linear Tempkin isotherm model. DOM extracted from fresh and decomposed agricultural residues, as well as model organic and humic acids, were used. Changes in the chemical and sorptive characteristics of
Effect of Aluminum Substitution in Goethite on
Phosphate adsorption and isotopic exchange rates were dependent upon mode of synthesis, aluminum substitution, and pH. These results and the accompanying transmission electron micrographs indicate that the chemico-physical environment during synthesis is a prime determinant of goethite's phosphate adsorption capacity.
(PDF) Infrared study of phosphate adsorption on goethite
Infra-red spectra of phosphate adsorbed on synthetic goethite (α-FeOOH) show only PO3–4 ions to be present. Phosphate bands observed at about 1125, 1050 and 1000 cm–1 are shifted to 1190
Effect of Aluminum Substitution in Goethite on
Effect of Aluminum Substitution in Goethite on Phosphorus Adsorption: II. The results, plotted as first-order reactions with respect to phosphate disappearance, were characterized by an initial fast phase followed by a pseudo-first-order reaction. An approximation of the magnitude of the fast phase was made by extrapolating the first-order
Dynamics of phosphorus in the rhizosphere of maize and
Key words : calcite, goethite, maize, phosphate, H+ release, Brassica napus L., Zea Mays L. Abstract In calcareous soils the dynamics of phosphorus is controlled by calcite and iron oxides such as goethite which strongly retain P and consequently maintain low P concentrations in soil solution. Plants can drastically change
Goethite modified biochar as a multifunctional
2020-2-20 For phosphorus adsorption, GMB-600-1 could form “inner-sphere complexes” and immobilize available phosphorus as precipitates. Therefore, nano-sized goethite particles on biochar surface significantly enhance the surface area, positive surface charge, oxidation-reduction, and surface complexation ability.
The Binding of Phosphorus Species at Goethite: A Joint
2021-3-20 the adsorbed phosphate species and the relative abundance of M complexes [34,35] ver-sus B ones [36,37]. This could be due to the presence of different surface planes for goethite and several binding motifs for the goethite–phosphate complexes in addition to the different setups and conditions of adsorption experiments reported in literature.
The Binding of Phosphorus Species at Goethite: A Joint
Knowledge of the interaction between inorganic and organic phosphates with soil minerals is vital for improving soil P-fertility. To achieve an in-depth understanding, we combined adsorption experiments and hybrid ab initio molecular dynamics simulations to analyze the adsorption of common phosphates, i.e., orthophosphate (OP), glycerolphosphate (GP) and inositolhexaphosphate (IHP), onto the
Phosphate complexation at the surface of goethite
2018-6-10 Phosphate complexation at the surface of goethite Nils Nilsson *,Lars Lovgren and Staffan Sjoberg Department of Inorganic Chemistry, University of Umea, S-90187 Umea, Sweden Abstract Phosphate complexation at the goethite-water interface has been studied in 0.1 M Na(NOa} medium at 298.2 K in the range 3.0 < -log[H+] < 9.0.
Inhibition of phosphorus sorption to goethite, gibbsite
2007-5-15 The direct effects of dissolved organic matter (DOM) on the sorption of orthophosphate onto gibbsite, goethite, and kaolin were examined using a one-point phosphorus sorption index and the linear Tempkin isotherm model. DOM extracted from fresh and decomposed agricultural residues, as well as model organic and humic acids, were used. Changes in the chemical and sorptive characteristics of
(PDF) Phosphate adsorption on goethite (??-FeOOOH)
Infra-red spectra of phosphate adsorbed on synthetic goethite (α-FeOOH) show only PO3–4 ions to be present. Phosphate bands observed at about 1125, 1050 and 1000 cm–1 are shifted to 1190
Availability to plants of phosphate adsorbed on goethite
The model was tested against observed availability of sorbed phosphate estimated from uptake by plants growing in phosphorus‐deficient conditions. The plants were grown on quartz sand coated with goethite on which phosphate was adsorbed, and which was mixed with nutrient solution.
Effect of Aluminum Substitution in Goethite on
Phosphate adsorption and isotopic exchange rates were dependent upon mode of synthesis, aluminum substitution, and pH. These results and the accompanying transmission electron micrographs indicate that the chemico-physical environment during synthesis is a prime determinant of goethite's phosphate adsorption capacity.
Effect of Aluminum Substitution in Goethite on
Effect of Aluminum Substitution in Goethite on Phosphorus Adsorption: II. The results, plotted as first-order reactions with respect to phosphate disappearance, were characterized by an initial fast phase followed by a pseudo-first-order reaction. An approximation of the magnitude of the fast phase was made by extrapolating the first-order
Dynamics of phosphorus in the rhizosphere of maize and
Key words : calcite, goethite, maize, phosphate, H+ release, Brassica napus L., Zea Mays L. Abstract In calcareous soils the dynamics of phosphorus is controlled by calcite and iron oxides such as goethite which strongly retain P and consequently maintain low P concentrations in soil solution. Plants can drastically change
Effects of crystallinity of goethite: II. Rates of
2005-8-10 Eight samples of goethite ranging in surface area from 18 to 132 m2 g-1 were mixed with phosphate at a range of pH values for periods which ranged from 0·5 h
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