435 Result(s)
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Article
Correlation of the vapor-liquid equilibria of CFC, HCFC and fc mixtures: Critical evaluation of mixing rules
The vapor-liquid equilibrium data of the binary CFC, HCFC, and FC mixtures were correlated with the Soave-Redlich-Kwong equation of state incorporated with some types of mixing rules; the conventional one flui...
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Article
Synthesis, Characterization, and Hydrolytic Degradation of Copolymers of 2-Methylene-1,3-dioxepane with Ethylene and with Styrene
2-Methylene-1,3-dioxepane (MDP) was copolymerized with ethylene (E) at a pressure of approximately 1000 psi and a temperature of approximately 70°C with AIBN as the free radical initiator. The copolymers obtai...
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Article
Effect of impeller blade number on KlA in mechanically agitated vessels
Effects of impeller blade number on gas dispersion and mass transfer rate were thoroughly investigated for mechanically agitated vessels equipped with 2-, 4-, 6- and 8-straight blades disk turbine impellers. T...
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Article
Effect of Starch Granule Size on Viscosity of Starch-Filled Poly(hydroxy ester ether) Composites
The effect of starch granule size on the viscosity of starch-filled poly(hydroxy ester ether) (PHEE) composites was characterized using size-fractionated potato starch, as well as unfractionated starches (rice...
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Article
Room temperature ionic liquids as replacements for conventional solvents – A review
Room temperature ionic liquids are salts that are liquids at ambient temperature. They are excellent solvents for a broad range of polar organic compounds and they show partial miscibility with aromatic hydroc...
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Article
Removal of phenolic compounds by electroassisted advanced process for wastewater purification
Electro-assisted advanced process was developed for wastewater treatment of phenolic compounds. A series of correlative experiments were carried out: the degradation of phenol by the advanced electrochemical o...
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Article
Investigation of alumina-supported Ni and Ni-Pd catalysts by partial oxidation and steam reforming of n-octane
Aseries of nickel and nickel-palladium supported upon alumina catalysts were prepared in order to obtain a suitable catalyst that could be used in the process of producing hydrogen by partial oxidation and ste...
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Article
Convenient synthesis ofn-methylpyrrolidine-2-thione and some thioamides
The synthesis of thioamides and thiolactams, which are used as important organic intermediates, has attracted great attention. However, expensive reagents, severe reaction conditions and low yields of the targ...
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Article
Use of long-chain alcohol in extraction and purification of lincomycin from fermentation broth
Low selectivity for lincomycin in butanol extraction process leads to relatively higher content of impurities. A novel process for extraction of lincomycin from fermentation broth was studied in this work. Mix...
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Article
A New Approach for the Flocculation Mechanism of Chitosan
A peak III/I ratio (δpeak) in pyrene-fluorescence spectrum was used to measure the polarity of microenvironment of chitosan adsorbing pyrene molecules. The authors detected the pyrene-fluorescence spectrum of chi...
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Article
High gas permeability in open-structure membranes
For most polymeric membranes, the gas permeability coefficient (P) is often interpreted as the product of diffusivity (D) and solubility (S) of a penetrant gas in the polymer (P=D S). The basic assumption is t...
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Article
NOx storage-reduction over Pt/Mg-Al-O catalysts with different Mg/Al atomic ratios
A series of Pt/Mg-Al-O catalysts with different Mg/Al atomic ratios were prepared. The NOx storage capacities of these catalysts were measured by isothermal storage at 350 ‡C. It was found that the NOx storage ca...
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Article
A New Type Synthetic Filter Material for Biofilter: Preparation and its Characteristic Analysis
In this study, a new type poly(vinyl alcohol)/peat composite bead is prepared and is shown suitable as a filter material for biofiltration. The optimal preparation condition is with the peat size of 16–35 mesh...
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Article
Poly(vinyl alcohol)/Compost Composites for Biofiltration of Swine Waste Volatiles
In this study, a Poly(vinyl alcohol)(PVA)/compost composite bead is prepared and is indicated suitable as a filter material for biofiltration. The optimal preparation process is with the compost size of 16–35 ...
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Article
Effect of surface properties of activated carbons on surfactant adsorption kinetics
This research investigates the adsorption properties of three activated carbons (AC) derived from coconut, coal, and wood origin. A linear relationship exists between the number of water molecules adsorbed ont...
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Article
Modeling of protein adsorption to DEAE sepharose FF: Comparison of data with model simulation
The equilibrium and kinetic characteristics of the adsorption of human serum albumin (HSA) and ovalbumin (OVA) to the DEAE Sepharose FF weak anion exchanger were experimentally determined. The rate for protein...
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Article
Preparation and properties of toughened yellow zirconia ceramics
To obtain the high toughness yellow ceramic, using the Y2O3 (5%) stabilized ZrO2 as main starting material, Al2O3 as toughen reagent, NH4VO3, V2O5 as colorant, and mixed with ball mill, molded with dry press meth...
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Article
A Synthetic Filter Material Containing Nutrients for Biofilter
In this study, a synthetic filter material with nutrients (PVA/peat/KNO3 composite bead) was developed for biofilteration. The optimal preparing condition was each of the peat and PVA aqueous solutions mixed with...
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Article
Structure of tetrakis(pyridinioacetate) neodymium(III) tetrahydrate perchlorate
The structure of tetrakis(pyridinioacetate) neodymium(III) tetrahydrate perchlorate, [Nd(pyBET)4 · 4H2O](ClO4)3, is reported. The neodymium atom is eight-coordinate dodecahedrally distorted polyhedron. The molecu...
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Article
Simulation of protein adsorption in a batchwise affinity chromatography with a modified rate model
A rate model was adapted to simulate the dynamics of protein adsorption. This model takes axial dispersion and film mass transfer into account where there is a nonlinear adsorption isotherm for protein. The mo...
