Showing papers in "Advanced Powder Technology in 2014"

TL;DR: In this paper, an analysis of the properties of agglomerates and aggregates in terms of their volume-equivalent radius, radius of gyration and/or mobility radii in the free molecular and continuum regimes along with the corresponding power laws is presented.

TL;DR: In this article, a number of recent developments in spark production of nanoparticles that are important for the synthesis of nanopowders and nanoparticulate materials are discussed, including recent improvements and theoretical and practical experience in controlling the main particle parameters determining the product properties.

TL;DR: In this article, the effects of reaction time, temperature and heating method on the characteristics of nano-NaX zeolite nanoparticles such as particle size, crystallinity, morphology, size distribution and surface area were investigated.

TL;DR: In this paper, a modified two-component four-equation non-homogeneous equilibrium model is employed for the alumina/water nanofluid that fully accounts for the effects of nanoparticles volume fraction distribution.

TL;DR: In this article, 13X zeolite was successfully synthesized from low-grade natural kaolin via alkali fusion followed by hydrothermal treatment, without extra Si source or dealumination.

TL;DR: In this paper, the effect of fly ash (FA) supported aqueous three-phase foams containing N 2 for coal spontaneous combustion prevention and control is discussed. But, the FA-supported three phase foams were not used for coal fire extinguishing.

TL;DR: An equiatomic CoCrFeNiMnAl high-entropy alloy was synthesized by mechanical alloying, and alloying behaviors, microstructure and annealing behaviors were investigated as discussed by the authors.

TL;DR: The most promising hollow or porous nanostructured particles have tapped density below 0.4 grams/cm 3 and mass medium aerodynamic diameter (MMAD) below 5μm as discussed by the authors.

TL;DR: In this paper, a review of recent research progress on fabrication strategies for nanostructured fine particles is presented, focusing on tailoring their inner structure and morphology towards particular practical applications.

TL;DR: In this paper, a review of tools for the investigation of mixing in particulate systems is presented, where the authors present guidelines for the selections of particle mixers and predictions of the mixture quality after mixing operations.

TL;DR: In this article, the authors present a review on the application of electrical capacitance tomography (ECT) in particulate process measurement, including the monitoring of flow regime and solids distribution, solids flow velocity measurement, and fluidized bed dryers.

TL;DR: In this paper, the strength and resistance to sulfate and acid of alkali-activated FBC fly ash and silica fume composite was studied. But, the strength loss was from the high calcium content of fly ash, thus increased the durability of the composite.

TL;DR: In this paper, the free radical characteristics of coal combustion were investigated using electron paramagnetic resonance (EPR) and 13 C solid-state nuclear magnetic resonance (NMR) techniques.

TL;DR: In this article, the Lattice Boltzmann Method (LBM) is used to investigate the effects of uniform vertical magnetic field on the flow pattern and fluid-solid coupling heat transfer in a channel which is partially filled with porous medium.

TL;DR: In this article, the formation mechanisms of different ZnO morphologies were also investigated based on the experimental results, and the results indicated that the flower-like morphologies possessed superior photocatalytic activity compared to other morphologies, which could be attributed to the morphology, surface defects, band gap and surface area.

TL;DR: A green chemistry approach for the biosynthesis of nano-zinc aluminate by a microwave method using high purity metal nitrates and aloe vera plant extract is reported in this paper.

TL;DR: In this article, the effect of various structures and composites synthesized by spray pyrolysis have on the electrochemical performance of next-generation electrodes for medium and large lithium ion batteries.

TL;DR: In this paper, the synthesis of high quality nanoparticles in supercritical fluids has been studied and the properties of those nanoparticles have been analyzed for further use in functional devices, including the crystalline structure, the presence of defects and the surface chemistry.

TL;DR: In this article, the growth rate increased with an increase in solution pH in the pH range of 8-9, and the rate of change of ortho-phosphate concentration in the bulk solution increases with increasing supersaturation ratio.

TL;DR: In this paper, the authors used ultrafine silk fibroin powder as low-cost adsorbent to remove dyes in the printing and dyeing wastewater, and showed that the silk powder with an average diameter of 3.8μm was dominant in β-sheet structure.

TL;DR: In this article, the photocatalytic activity of the products in the aqueous solution of Rhodamine-B has been investigated under UV-light for a given time using UV-visible spectroscopy and the mineralization of organic substance was measured by total organic carbon (TOC) analysis.

TL;DR: In this article, a multiobjective optimization of Al 2 O 3 -water nanofluid parameters in flat tubes is performed using Computational Fluid Dynamics (CFD) techniques, Artificial Neural Networks (ANN) and Non-dominated Sorting Genetic Algorithms (NSGA II).

TL;DR: In this paper, forced convective heat transfer of an MHD fully developed laminar nanofluid between two concentric horizontal cylinders is investigated in the presence of a radial magnetic field.

TL;DR: In this article, the authors present a compilation of works of the main techniques for monitoring and control fluidization regimes, particle size and moisture content during coating and granulation processes in the fluidized bed.

TL;DR: Precipitated calcium carbonate was obtained by CO 2 bubbling in CaCl 2 solution and ammonia and alkylamines were used to enhance CO 2 absorption and control the polymorphic phases as discussed by the authors.

TL;DR: In this article, a large amount of data available in the literature were analyzed for variation of the two key mill performance parameters: power specific values of the absolute breakage rate of the coarsest size fraction, S *, and the absolute rate of production of fines, F *, with some of the important operating and design variables such as the mill speed, ball load, particle load, ball diameter and mill diameter.

TL;DR: In this article, a modified nano-TiO 2 was modified using methanol as solvent and diacids based on natural amino acids as modifier at room temperature and using ultrasonic irradiation.

TL;DR: In this article, a new drag relation for monodisperse spheres is proposed and the physics behind its development is explained, which is applicable to high Stokes number gas-solid flows.

TL;DR: In this paper, an experimental study of the kinetics of methane hydrate formation in the presence of ionic surfactants with equal carbon chain length, such as sodium dodecyl sulfate (SDS), dodecylamine hydrochloride (DAH), and N-dodecylpropane-1,3-diamine hydro chlorideide (DN2Cl), was conducted.

TL;DR: Ca 2+ -post-cross-linked alginate microspheres show possibility for use as controlled-release drug carriers in vitro and show prolong release profiles in vitro.