搜索结果: 1-15 共查到“矿床学与矿相学 solutions”相关记录47条 . 查询时间(0.109 秒)
Adsorption behavior of Cu2+ from aqueous solutions onto starch-g-poly (acrylic acid)/sodium humate hydrogels
Starch Sodium humate Hydrogel Cu2+ adsorption Complexation
2011/7/17
A series of starch-g-poly(acrylic acid)/sodium humate (St-g-PAA/SH) hydrogels were prepared and used to adsorb Cu2+ from the aqueous solution. The batch adsorption experiments were carried out by vary...
Sorption of radiocobalt(II) from aqueous solutions to Na-attapulgite
Co(II) Sorption Na-attapulgite pH Thermodynamic parameters
2011/5/3
The sorption of Co(II) on Na-attapulgite as a function of contact time, solid content, pH, ionic strength, foreign ions, fulvic acid (FA) and temperature under ambient conditions was studied. The kine...
Adsorption of cationic dye on N,O-carboxymethylchitosan from aqueous solutions: equilibrium, kinetics,and adsorption mechanism
N,O-carboxymethyl-chitosan Adsorption Methylene blue Equilibrium Kinetics Mechanism
2010/8/13
In order to improve the adsorption capacity of chitosan (CTS) for methylene blue (MB) cationic dye, a series of N,O-carboxymethyl-chitosans (N,O-CMCTS) were prepared under heterogeneous conditions by ...
Thermoanalytical studies of silver and lead jarosites and their solid solutions
Jarosite Thermal analysis Controlled rate thermal analysis Thermogravimetry
2009/8/28
Dynamic and controlled rate thermal analysis has been used to characterise synthesised jarosites of formula [M(Fe)3(SO4)2(OH)6] where M is Pb, Ag or Pb–Ag mixtures. Thermal decomposition occurs in a s...
Complex Formation of Cation-Exchanged Montmorillonites with Propylene Carbonate: Osmotic Swelling in Aqueous Electrolyte Solutions
Infra-Red Spectroscopy Intercalation Complex Montmorillonite Osmotic Swelling Propylene Carbonate
1999/10/1
Abstract: Montmorillonites saturated with Li+, Na+, K+, NH4+, Mg2+, Ca2+, Ba2+, or Ni2+ ions can form complexes with propylene carbonate (PC) by intercalation; the d(001) of montmorillonite expands to...
Methods for Performing Atomic Force Microscopy Imaging of Clay Minerals in Aqueous Solutions
Atomic Force Microscopy CMS Source Clay KGa-1 CMS Source Clay SWy-1 Fluid Cell Particles Polyethyleneimine Sapphire TappingMode Tempfix
1999/10/1
Abstract: Three methods were developed that allow for the imaging of any clay mineral in aqueous solutions with atomic force microscopy (AFM). The methods involve fixing the particles onto special sub...
Removal of Nickel and Cobalt from Aqueous Solutions by Na-Activated Bentonite
Adsorption Bentonite Cation Exchange Clays Cobalt Removal Heavy Metals Nickel Removal Wastewater
1999/10/1
Abstract: The ability of Na-activated bentonite to remove Ni2+ and Co2+ from aqueous solutions at room temperature (22 ± 1°C) was studied under various experimental conditions. The parameters studied ...
Shifts in thermal expansivity with Fe content for solid solutions of MgSiO3-FeSiO3 with the perovskite structure
MgSiO3-FeSiO3 perovskite structure
1999/3/12
ThisstudypresentsevidencethatforasolidsolutionofMgFe SiO perovskite,the
x x-1 3
shiftinvolumethermalexpansivity,,issmallastheindex x ischanged.Accordingto
dataobtainedtheoreticallybyHamaandSuito(19...
Relating formulations of the thermodynamics of mineral solid solutions: Activity modeling of pyroxenes, amphiboles, and micas
mineral solid solutions pyroxenes amphiboles andmicas
1999/1/3
Inathermodynamicdescriptionofamineralsolidsolution,itiscustomarytoselecta
minimalgroupofend-membersthatconstitutesanindependentset,andyetinpractical
calculationsitcommonlyoccursthatadifferentindepen...
An Aluminum Pillared Montmorillonite with Fast Uptake of Strontium and Cesium from Aqueous Solutions
Cation Exchange Capacity Delamination Pillared Clay Radiocesium Radiostrontium Uptake
1997/10/1
Abstract: The uptake of Sr and Cs by 2 types of aluminum pillared layered clays (Al-PILC), a reference sample (AZA) and a specially tailored sample (FRAZA), were investigated. The AZA sample was prepa...
Marcasite oxidation in low-temperature acidic (pH 3.0) solutions: Mechanism and rate laws
Marcasite oxidation low-temperature acidic :Mechanism rate laws
1997/9/10
MarcasitesurfaceswereanalyzedusingX-rayphotoelectronspectroscopy(XPS)andaugerelectronspectroscop(AES).XPSdataofapristinemarcasitesurfaceareusedasatemplatetoexaminethecharacteristicsofamarcasitesurface...
Volumes of K-Na mixing for low albite-microcline crystalline solutions at elevated temperature: A test of regular solution thermodynamic models
K-Na mixing low albite-microcline crystalline solutions elevated temperature test regular solution thermodynamic models
1997/1/3
High-temperature volumes of K-Na mixing have been investigated for a seven-member
low albite-microcline ion-exchange series by conducting X-ray powder diffraction mea-
surements from room temperatur...
Lattice simulation studies of the ferroelastic phase transitions in (Na,K)AlSi3O8 and (Sr,Ca)Al2Si2O8 feldspar solid solutions
Lattice simulation studies ferroelastic phase transitions (Na,K)AlSi3O8 (Sr,Ca)Al2Si2O8 feldspar solid solutions
1997/1/3
Lattice-energy minimization calculations have been performed on the feldspar systems
(Ca,Sr)AI2Si20g and disordered (Na,K)AlSi30g as functions of composition to simulate the
ferroelastic phase trans...
Thermodynamics of order-disorder in minerals: II. Symmetric formalism applied to solid solutions
Thermodynamics order-disorder minerals II. Symmetric formalism solutions
1996/11/6
The thermodynamics of order-disorder in mineral solid solutions are handled withsym-metric formalism, whereby the mineral is treated as a solid solution between an indepen-dent set of end-members with...
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
1996/4/1
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...