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PRETREATMENT OF SOILS AND CLAYS FOR MEASUREMENT OF EXTERNAL SURFACE AREA BY GLYCEROL RETENTION
SOILS CLAYS GLYCEROL RETENTION
2011/11/15
Heat treatment at 600~ has been the usual procedure for irreversible collapse of expanding clay minerals prior to determination of the external surface area of clays and soils by glycerol retention. E...
It has been demonstrated that ferric iron is the principal source of the oxidizing action of the surface of attapulgite clay. The extent of oxidizing action in a- given time (the oxidizing power) has ...
Surface Modification of Acid Activated Polyamide Fiber by Immobilizing Collagen
Collagen Immobilization Polyamide Fiber Surface Modification
2011/12/20
Collagen was immobilized onto moderate acid activated polyamide fibers with glutaraldehyde (cross-linking agent) aimed to improve its sanitary property. The immobilization of collagen onto polyamide f...
Research on the Relief Degree of Land Surface (RDLS) Calibration Coefficient of Highway in Plateau Mountainous Area
Least Square Method (LSM) RDLS RDLS Calibration Coefficient Regression Model Traffic Engineering
2011/12/20
Different reasons leaded to highway circuitous between plateau mountainous area and plain lightly undulate area were analyzed. The main reason which leaded to highway circuitous is the RDLS was conclu...
Fast removal of ammonium ion using a hydrogel optimized with response surface methodology
Adsorption Ammonium ion Box–Behnken design Hydrogel Response surface methodology
2011/12/14
Response surface methodology (RSM) based on a three-level, three-variable, Box–Behnken design (BBD) was used to optimize the preparation parameters of a hydrogel consisted of polyvinyl alcohol (PVA),a...
The Effect of Laser Processed Nano-SiC-Ni Metal Ceramic on the Surface Properties of the Iron-Based Material
Appraisal System Grey Relation Evaluation Theory Laser Alloying Metal-Ceramic Silicon Carbide (SiC)
2011/11/22
In this article, we have carried out the Ni based self fluxing alloy powder and studied the effect on the laser alloying of 45steel layer which contains different weight percentage of nano-SiC powders...
Response surface methodology was employed to optimize the adsorption parameters of Methylene Blue onto a chitosan-g-poly(acrylic acid)/halloysite hydrogel composite with 50% halloysite content. Such o...
Analysis of Influencing Factors on the Structure and Surface Properties of Palygorskite
Crystal Structure Dispersion Component Heat Treatment Palygorskite Surface Free Energy Water Vapor Absorption
2011/11/14
The relationship between surface properties and water vapor absorption performance was studied according to crystal structure and surface free energy of purified palygorskite. The results show that th...
Preparation and Characterization of Polypyrrole/Attapulgite with Organic Surface Modification Conducting Composite
Attapulgite Conducting Nano-Composite Material Organic Surface Modification Polypyrrole Silane Coupling Agent Sulfamic Acid
2011/11/14
Attapulgite was organic surface modified with silane coupling agent (KH570) and acetone, with ferric chloride (FeCl3∙6H2O) as the oxidant, sulfamic acid(SA) as dopant, prepared polypyrrole/attap...
The specific surface area (SSA) of clay minerals and related materials is one of their most important properties controlling surface phenomena. The SSA of nonswelling and non-microporous phyllosilicat...
The surface energy of palygorskite
Adsorption of water Palygorskite Surface energy Surface tension
2011/11/4
An average value for the surface energy (÷S) of palygorskite was determined from experimental data of spreading pressure, the surface tension
of water and its contact angle using a formula based on ...
The Surface Chemistry of Imogolite
Adsorption Basic Stern Model Bond Valence Chloride Imogolite Point-of-Zero Charge Surface Charge
2011/12/2
Abstract: Imogolite is a tubular aluminosilicate which is common in Andosols and Spodosols. The high pH at point-of-zero charge at the outer parts of the tube and the anomalously high chloride adsorpt...
Thickness and Surface Characteristics of Colloidal 2:1 Aluminosilicates Using an Indirect Fourier Transform of Small-Angle X-ray Scattering Data
Illite Indirect Fourier Transform Montmorillonite SAXS Thickness
2011/12/5
Abstract: An indirect Fourier transformation applied to small-angle X-ray scattering data has been used to determine the thickness and surface properties of two common clay minerals. For an illite sys...
Methylene Blue Dimerization does not Interfere in Surface-Area Measurements of Kaolinite and Soils
Dye Adsorption Ethylene Glycol Adsorption Kaolinite Surface Methylene Blue Dimerization Specific Surface Area
2011/12/5
Abstract: Methylene blue (MB) was adsorbed from aqueous solutions onto a kaolinite and four soil samples to determine the effects of MB dimerization on the measured surface area. Adsorption isotherms ...
Abstract: The persistence of many seemingly metastable mineral assemblages in sediments and soils is commonly attributed to their sluggish transformation to the stable-phase assemblage. Although undou...