搜索结果: 1-15 共查到“知识库 goethite”相关记录40条 . 查询时间(0.062 秒)
Si-P impure Al-Goethite Mineralization on the island of Dugi Otok (Central Adriatic,Croatia)
Al-goethite stoichiometric goethite crystalochemistry en dogenic origin Dugi otok Adriatic Sea
2009/12/8
At the western seaward coast of the island of Dugi Otok, unusual goethite mineralization occurs as the infilling of a system of thin crevices in the Upper Cretaceous limestones of the Adriatic carbona...
Thermochemical Review of Jarosite and Goethite Stability Regions at 25 and 95°C
Jarosite Goethite Iron Precipitation Solution Purification
2009/10/12
The hydrometallurgical treatment of zinc sul de concentrates involves the separation of zinc from iron,since most zinc concentrates contain 5-12% iron. Several processes, such as hematite, magnetite, ...
ICE NUCLEATING PROPERTIES OF SOOT,KAOLINITE,&GOETHITE AT CONDITIONS RELEVANT FOR THE LOWER TROPOSPHERE
ICE NUCLEATING PROPERTIES GOETHITE LOWER TROPOSPHERE
2011/11/11
ICE NUCLEATING PROPERTIES OF SOOT,KAOLINITE,&GOETHITE AT CONDITIONS RELEVANT FOR THE LOWER TROPOSPHERE.
Effect of KCl and CaCl2 as Background Electrolytes on the Competitive Adsorption of Glyphosate and Phosphate on Goethite
Adsorption Background Electrolyte Competition Glyphosate Goethite Phosphate
2011/12/5
Abstract: Competitive adsorption between glyphosate and phosphate on goethite was evaluated. The influence of background electrolyte on the adsorption of glyphosate and phosphate was also investigated...
Formation of Goethite and Hematite from Neodymium-Containing Ferrihydrite Suspensions
Ferrihydrite Goethite Hematite Neodymium Powder X-ray Diffractometry Rietveld Refinement Transmission Electron Microscopy
2011/12/8
Abstract: The effects of neodymium (Nd) on the transformation of ferrihydrite to iron oxides was studied. The possible isomorphous substitution of Nd3+ for Fe3+ in iron oxides was examined also. Nd wa...
Spectroscopy Study of Arsenite [As(III)] Oxidation on Mn-Substituted Goethite
Arsenate Arsenite Mn-Substituted Goethite Oxidation XANES
2011/12/7
Abstract: Mn-substituted goethite was synthesized and the interaction between arsenite (As(III)) and Mn-substituted goethite was investigated by both solution chemistry and X-ray adsorption near edge ...
Effect of Phosphate on the Crystallization of Hematite, Goethite, and Lepidocrocite from Ferrihydrite
Crystallization Ferrihydrite Goethite Hematite Lepidocrocite Phosphate
2011/12/7
Abstract: We investigated the crystallization of ferrihydrite prepared by hydrolysis of Fe(NO3)3 solutions containing phosphate. Crystallization was studied at different pH (3–9), temperatures (298, 3...
Diffuse Reflectance Spectra of Al Substituted Goethite: A Ligand Field Approach
Band Decomposition Bond Distances Diffuse Reflectance Spectroscopy Goethite Ligand Field Splitting Racah-Parameters
2011/12/6
Abstract: Previous investigations of goethite revealed a substantial variation of color and diffuse reflectance spectra (DRS) in the extended visible range (350–2200 nm). To better understand the caus...
Reactions of copper and cadmium ions in aqueous solution with goethite, lepidocrocite, mackinawite, and pyrite
copper and cadmium irons goethite lepidocrocite mackinawite andpyrite
2012/3/31
TheuptakeofCuandCdinaqueoussolutionbyinteractionwiththesurfacesofcare-
fullysynthesized?nelysizedparticlesofgoethite,lepidocrocite,mackinawite,andpyrite
wasmeasuredasafunctionofinitialmetalconcentra...
Stirring Effects on Properties of Al Goethite Formed from Ferrihydrite
Al Goethite Crystallinity Hematite Stirring Unit Cell Parameters
2011/12/8
Abstract: Minerals in surface environments form in both turbulent and non-turbulent systems. This study compares the properties of Al goethite formed from ferrihydrite at 60 °C in 0.3 M KOH with and w...
Epitaxial overgrowth of goethite on hematite synthesized in phosphate media: A scanning force and transmission electron microscopy study
Epitaxial goethite hematite synthesized phosphate media scanning force transmission electron microscopy study
2012/4/6
WeusedX-raydiffraction(XRD),scanningforcemicroscopy(SFM),transmissionelec-
tronmicroscopy(TEM),andcolortoinvestigatetheeffectofphosphateonthecrystalli-
zationrate,nature,andmorphologyofironoxidespre...
Properties of Goethite and Jarosite Precipitated from Acidic Groundwater, Dalarna, Sweden
Acid Mine Drainage Goethite Groundwater Jarosite Mossbauer Spectroscopy X-ray Diffractometry
2011/12/9
Abstract: This study characterizes various chemical and mineralogical properties of goethite and jarosite from a mine drainage environment using chemical extraction techniques, X-ray diffractometry (X...
Hematite and Goethite from Duricrusts Developed by Lateritic Chemical Weathering of Precambrian Banded Iron Formations, Minas Gerais, Brazil
Hematite Goethite Laterite Mossbauer Spectrometry
2011/12/1
Abstract: The upper 15–20 m of a 200 m thick lateritic weathering profile on Precambrian itabirites of Capanema, Brazil, reveals a genetic pathway for the formation of hematitic and goethitic nodules ...
Vicinal Faces on Synthetic Goethite Observed by Atomic Force Microscopy
Atomic Force Microscopy Crystal Growth Goethite
2011/12/27
Abstract: In this paper atomic force microscopy-studies are reported suggesting the existence of vicinal faces on the (100) plane of artificially grown goethite. Goethite crystals are commonly regarde...
Goethite Dispersibility in Solutions of Variable Ionic Strength and Soluble Organic Matter Content
Citrate Dispersion Flocculation Goethite Humic Acid Light Scattering Salicylate Soluble Organic Matter
2011/12/23
Abstract: The degree of flocculation of aqueous suspensions of microcrystalline goethite was measured in salts of monovalent, divalent and trivalent cations at pH 6.0?.5 over a range of ionic strength...