Journal ArticleDOI
Ultrasonic fragmentation of agglomerate powders
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TLDR
In this paper, a theory for ultrasonic fragmentation of agglomerate particles suspended in liquids is presented, and an expression for the fragmentation rate as a function of ultra-osnic power and agglerate size is derived.About:
This article is published in Chemical Engineering Science.The article was published on 1993-01-01. It has received 134 citations till now. The article focuses on the topics: Particle size & Particle-size distribution.read more
Citations
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Mechanical stability measurements of surface modified nanoparticle agglomerates
TL;DR: In this article, a low pressure impactor is used to measure the mechanical stability of nanoparticle agglomerates and the stability at different impaction velocities is quantified as changes in the projection area of agglerate fragments deposited on TEM grids mounted on the impaction plate.
Dissertation
Evaluación de borra de café como soporte en un catalizador de hierro para la remoción de fucsina básica mediante un proceso de oxidación catalítica por fase húmeda
TL;DR: In this paper, the use of spent coffee grounds (SCG) was evaluated as a support for an iron catalyst to carry out the oxidation of this contaminant, varying the load of the active phase (2,5, 5 and 10%) and the incorporation method (wet impregnation and impregate with ultrasound lasting 10 and 30 minutes) and maintaining the charge of coffee at 0.5 g/L.
Journal ArticleDOI
Describing Mining Tailing Flocculation in Seawater by Population Balance Models: Effect of Mixing Intensity
Gonzalo R. Quezada,Luís Ayala,Williams H. Leiva,Norman Toro,Pedro G. Toledo,Pedro Robles,Ricardo I. Jeldres +6 more
TL;DR: In this paper, a population balance model is used to describe flocculation of particle tailings in seawater at pH 8 for a range of mixing intensities, where the size of the aggregates is represented by the mean chord length, determined by the focused beam reflectance measurement (FBRM) technique.
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Effect of Dispersion Method and Catalyst on the Crack Morphology and Performance of Catalyst Layer of PEMFC
Shaojie Du,Shumeng Guan,Shirin Mehrazi,Fen Zhou,Mu Pan,Ruiming Zhang,Po-Ya Abel Chuang,Pang-Chieh Sui +7 more
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Efficiency of electrostatic precipitation of NiO nanoparticles dispersed by atomization
TL;DR: The dispersion of metal oxide nanoparticles by pneumatic atomization of oxide suspensions has rarely been used in laboratory-scale research on electrostatic precipitation, due to the insolubility of the insoluble particles as discussed by the authors.
References
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Journal ArticleDOI
Collapse of an initially spherical vapour cavity in the neighbourhood of a solid boundary
TL;DR: In this paper, a numerical method was proposed to solve the problem of balloon bubble collapse near a plane solid wall, using finite time steps and an iterative technique for applying the boundary conditions at infinity directly to the liquid at a finite distance from the free surface.
Journal ArticleDOI
Cavitation produced by Ultrasonics
B E Noltingk,E A Neppiras +1 more
TL;DR: In this article, the problem of cavitation produced by ultrasonic vibration is examined theoretically, and it is predicted that all cavitation phenomena will diminish and finally disappear as the frequency is raised.
Journal ArticleDOI
Agglomerate and Particle Size Effects on Sintering Yttria‐Stabilized Zirconia
TL;DR: In this article, the initial-, intermediate-, and final-stage sintering of fine crystallite yttria-stabilized zirconia was studied, and it was found that agglomerates limit attainable green density, interfere with the development of microstructure, impede initial-stage Sintering kinetics, and limit the potential benefit of the fine crystallites on final stage sinterings.