Metallic iron nanoparticles intensified production by spinning disk reactor: Optimization and fluid dynamics modelling

Abstract

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Green synthesis of iron-based nanoparticles using Chlorophytum comosum leaf extract: methyl orange dye degradation and antimicrobial properties

“…The main challenges in the production of NPs can be resolved by using micromixing conditions which result in high reaction rates of NPs synthesis and a significant effect on the particle size distribution of NPs. In other words, the quantity of the stirring velocity, and the molar ratio of precursors at the reaction media affected the particle size distribution of NPs [63,64]. The surface morphology and distribution of prepared INPs were investigated by the TEM technique.…”

Preparation of Activated Carbon Supported Bead String Structure Nano Zero Valent Iron in a Polyethylene Glycol-Aqueous Solution and Its Efficient Treatment of Cr(VI) Wastewater

“…ZVI is still used as an electron source in the treatment of Cr(VI), while the oxide shell only promotes the adsorption of Cr(VI) [38]. This microstructure is similar to that of ZVI particles [39][40][41] prepared by chemical agents. Illustrated in Figure 1g, the observed microscopic area was evenly distributed on the surface of iron, which indicated that the load of nZVI was very uniform without large area agglomeration.…”

ZnO Nano-Particles Production Intensification by Means of a Spinning Disk Reactor

“…These two parameters strongly influenced the fluid dynamic conditions established in the rotating liquid film, which was generated onto the surface of the disk [ 46 ]. The residence time τ [s] on the disk can be calculated as [ 37 ]: where Q is the total inlet flowrate [m 3 /s], ν is the kinematic viscosity [m 2 /s], assumed equal to that of water being the diluted solution, and r d [m] is the disk radius. Figure 5 summarizes the influence of r i on residence time.…”

“…These two parameters strongly influenced the fluid dynamic conditions established in the rotating liquid film, which was generated onto the surface of the disk [46]. The residence time τ [s] on the disk can be calculated as [37]:…”

“…Chemical precipitation was mainly investigated using classical lab-scale glassware, and to the author’s knowledge, no other particular equipment (either at lab or pilot-scale) has been employed in the past. The use of a spinning disk reactor (SDR) for inorganic and metal oxide nanoparticles production has been studied in the last two decades by a small number of research teams, and less than 100 articles on this subject can be found in the literature [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. However, the adoption of such equipment may allow for the rapid scaling-up of classical batch productions of nanoparticles, achieving the advantages of a continuous production process (waste reduction, larger reproducibility and production rate, reduced manufacturing cost, higher and consistent product quality, etc.…”