Showing papers in "Advanced Powder Technology in 2019"

TL;DR: In this article, a two-phase mixed convection of a non-Newtonian nanofluid in a porous H-shaped cavity was studied, where different aspect ratios were used in order to achieve the best heat transfer rate.

TL;DR: In this article, the authors synthesized g-C3N4/TiO2 nanocomposite (1:1) having different shapes of TiO2 (nanorods (NR), nanospheres (NS), and nanotubes (NT)), to show the effect of morphology on its photocatalytic activity.

TL;DR: In this paper, the authors summarized and evaluated the modern synthesis strategies (bottom-up and top-down) for introducing additional meso/macroporosity into microporous zeolites.

TL;DR: In this article, the effects of anion surfactant named Sodium Dodecyl Sulfate (SDS) on the pressure relief and enlarge permeability effect of compound solution acidified coal were studied from four aspects: mechanical characteristics, porosity and pore distribution of coal samples, retention effect of fracturing fluid and microscopic morphology of coal sample surface.

TL;DR: In this article, the performance of four tetracycline antibiotics using BiVO 4 /TiO 2 /RGO composites was investigated, and the obtained visible light-driven photocatalyst was used to degrade four kinds of TCC antibiotics.

TL;DR: By employing the finite element method, thermophoresis and Brownian diffusion are studied numerically relating to the natural convection in a wavy cavity that is filled with an Al 2 O 3 -water nanofluid possessing a central heat-conducting solid block that is influenced by the local heater located on the bottom wall as mentioned in this paper.

TL;DR: In this paper, the effects of [Bmim][Cl] (1-butyl-3-methylimidazole chloride) ionic liquid with different concentrations on coal wetting performance and functional groups of coals have been studied.

TL;DR: In this paper, the capability of a magnetic composite of oak powder/Fe3O4 for the adsorption of lead, cobalt, and nickel ions from aqueous solutions was examined.

TL;DR: In this paper, a cyclone separator is simulated by means of DEM-CFD and the effects of inlet angle and particle size on separation efficiency are quantified. But the results of the simulation are limited to two regions: the loss-free vortex region and forced vortex region.

TL;DR: In this paper, the combined effects of nonlinear thermal radiation, Arrhenius activation energy, chemical reaction and heat generation/absorption on the steady three-dimensional magnetohydrodynamic flow of Eyring-Powell nanofluid flow over a slendering stretchable sheet with velocity, thermal and solutal slips are analyzed.

TL;DR: In this paper, the authors applied CFD computer simulation technology to study the dust control effect of TBM construction tunnels under different dust extraction flow rates, and the results showed that the full-face dust diffuses to 47.54-71.84m.

TL;DR: In this paper, tin oxide (SnO2) nanoparticles were synthesized via a green route using jujube fruit as a non-toxic, renewable reducing agent, and excellent stabilizer.

TL;DR: In this article, a new type of shearer sprayer is developed in order to solve the serious pollution problem of PM10 in a fully mechanized mining face, focusing on the drum cutting process which produces the most dust.

TL;DR: A nano-scale sorbent was produced from eggshell wastes for sorption of Hg(II) and methyl violet (MV) from aqueous solutions and real wastewaters.

TL;DR: In this paper, the thermal and hydraulic attributes as well as energy efficiency of a new ecofriendly nanofluid including functionalized graphene nanoplatelets in a mini heat sink with three different pin fins are investigated and compared with each other.

TL;DR: In this article, the authors showed that the ternary ZnO/BiOBr/C-Dots nanocomposites showed remarkably increased photocatalytic performances.

TL;DR: In this article, the effect of using different nanofluid as a coolant fluid on the thermal performance of Pillow plate heat exchanger (PPHE) is investigated, and the results indicate that by increasing the nanoparticle volume concentration in the range of 2-5%, the heat transfer coefficient is improved significantly at low Reynolds number.

TL;DR: Wang et al. as mentioned in this paper investigated the influence of the physical chemistry characteristics of coal samples on the wetting ability of surfactants to the coals dust, and the experimental results demonstrate that the following factors produce correspondingly increased wettability: higher moisture content, lower carbon content, higher oxygen content, more oxygencontaining functional groups, and increased pore size.

TL;DR: In this article, a dust reduction method consisting of shearer external multi-stage atomization and dust removal fan was proposed to improve the dust suppression efficiency of the external spray systems of shearers.

TL;DR: In this paper, hydrogen peroxide activated graphitic carbon nitride (agCN) was combined with Fe3O4 and Bi2S3 to fabricate agCN/Fe 3O4/Bi 2S3 nanocomposites via facile refluxing method, as visible-light-induced photocatalysts for photodegradations of anionic and cationic dyes such as MO, RhB, MB, and photoreduction of Cr(VI).

TL;DR: Li et al. as discussed by the authors conducted the wind speed variation law in the fluid domain and the impact of the collision between the ore in the unloading process on the fluid to determine the key dust control point based on CFD-DEM coupling software.

TL;DR: In this paper, a 3D simulation of the perforated conical rings in a heat exchanger tube was performed to analyze the Reynolds averaged Navier Stokes (RANS) equations with finite volume method using (RNG) k - ∊ model.

TL;DR: In this article, the influence of nanoparticle volume concentration and proportion on heat transfer performance (HTP) of Al2O3 -Cu/water hybrid nanofluid in a single pass shell and tube heat exchanger is analyzed.

TL;DR: In this paper, the effect of citric acid on struvite precipitation was evaluated by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and particle size analysis.

TL;DR: In this paper, the effects of the amount of modifier, pH value, initial concentration of M(II), temperature and contact time were tested in a single adsorption system.

TL;DR: In this paper, a Na-X zeolite was successfully prepared from low aluminum coal fly ash (LACFA) via fusion-hydrothermal treatment, and the experimental data was suitable fitted by Freundlich adsorption isotherm model.

TL;DR: In this paper, a review of spray-drying developments for the fabrication of porous particles with controllable structure is presented, which can be used for advanced functional materials, such as catalysts, adsorbents and sensors.

TL;DR: In this article, different nanoscale zero-valent irons (nZVI) were prepared in order to improve their stability and reactivity to heavy metal lead (Pb (II)).

TL;DR: In this article, the influence of the concentration of water (H2O) for the magnetic performance of the AMPCs has been systematically studied based on careful analysis of the process of nucleation and growth of TiO2 under different H2O concentration in the reaction system.

TL;DR: In this article, a selective reduction-wet magnetic separation process was proposed to improve the beneficiation of nickel from limonitic laterite ore through interaction of silica and calcium sulfate.