Particle grinding by high‐intensity ultrasound: Kinetic modeling and identification of breakage mechanisms

Raman, V.; Abbas, Ali; Zhu, Wenting

doi:10.1002/aic.12415

Cited by 22 publications

(42 citation statements)

References 30 publications

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“…[16] Discretization techniques are widely used for solving PBE among others since they are simple to implement and can predict particle properties accurately. [6,11] The value of b i,k can be calculated by integrating Equation (7) analytically or numerically. In this technique it is assumed that particles belonging to a particular discrete size interval can be represented by a single particle size.…”

Section: Methods Of Solutionmentioning

confidence: 99%

“…Complications in breakage equation arise because of two kinetic parameters: (1) specific rate of breakage, and (2) distribution of daughter particles given by the distribution function. Recently Raman et al [11] conducted kinetic modelling of ultrasound-facilitated breakage by using Kapur function analysis. Kuster et al [6] studied the kinetics of dispersion of agglomerated powders and developed energy-size reduction law for ultrasonic fragmentation using PBE.…”

Section: Introductionmentioning

confidence: 99%

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Ultrasound‐facilitated particle breakage: Estimation of kinetic parameters using population balance modelling

Bari

Pandit

2014

Can J Chem Eng

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Ultrasound-facilitated particle breakage has been proven to be a good technique for size reduction. However, because of the difficulties associated with the solution of population balance equation (PBE), there has been little attention on the estimation of kinetics of this process. In this paper an attempt has been made to develop a generic approach for solving PBE with a given particle size distribution (PSD) data to estimate the breakage kinetics. For this purpose, discretization technique along with gPROMS parameter estimation tool was used. This method was found to be a comprehensive method for the estimation of breakage kinetics in general and was subsequently used for the estimation of ultrasound-facilitated breakage kinetics, using a simple model system. Potassium nitrate (KNO 3 ) particles suspended in toluene was used as model system, and the effect of induced power on breakage strength was studied. The data obtained were used for the estimation of specific breakage rate with different particle size distribution function. The distribution function, for which simulated PSD was found to match with the experimental PSD, was considered for deriving energy-size reduction law.

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Section: Methods Of Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrasound‐facilitated particle breakage: Estimation of kinetic parameters using population balance modelling

Bari

Pandit

2014

Can J Chem Eng

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“…The experimental curve is expected to lie between the two Cumulative breakage function representation B i,j versus x i /x j obtained for different grinding mechanisms according toRaman et al (2011). The experimental curve is expected to lie between the two Cumulative breakage function representation B i,j versus x i /x j obtained for different grinding mechanisms according toRaman et al (2011).…”

mentioning

confidence: 90%

“…But Raman et al (2011) proposed to include in Equation (25.8) an ultrasonic parameter a, the function of the amplitude ratio: But Raman et al (2011) proposed to include in Equation (25.8) an ultrasonic parameter a, the function of the amplitude ratio:…”

Section: Disruption and Breakagementioning

confidence: 99%

Ultrasonic mixing, homogenization, and emulsification in food processing and other applications

Delmas

Barthe

2015

Power Ultrasonics

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The use of power ultrasound (US) to intensify physicochemical processes is now a large area of research. The most famous application of high-power US is cleaning, but many other processes may be dramatically enhanced or qualitatively improved by ultrasonic irradiation. Various industrial fields are concerned as materials ([nano]materials, polymers, surface coatings, and electrochemistry), the environment (especially water, sludge, and soil treatments), and cosmetic and food engineering (mainly through extraction of natural products from plants, dissolution, homogenization, and emulsification processes). Among these various applications of power US the main unit operations most often involve multiphase media for either production and/or dispersion of a solid phase in a liquid through precipitation, crystallization, or simple deaggregation or disruption and/or dissolution of particles, floc, curd, and cells. These operations may be highly improved by power US.This chapter analyzes the effects of power US on such physical operations, excluding any reactive process. First, it has to be emphasized that hydrodynamics connected with power US does control its mechanical effects through acoustic cavitation, a key phenomenon, and through acoustic streaming, albeit to a much lesser extent. Thus a brief survey of cavitation and acoustic streaming gives the minimum information necessary to understand local and global US-induced hydrodynamics. As a direct consequence of acoustic cavitation and streaming, US mixing-both at a reactor scale (macromixing) and a molecular scale (micromixing)-is presented, with reference to the engineering approach linking cavitation and acoustic streaming phenomena to micro-and macromixing, respectively.Concerning specific US applications for solid-liquid suspensions, dispersion, or deagglomeration, the process of separating and suspending tiny particles that are initially naturally aggregated by attraction forces, is reviewed first. Then particle size reduction, achieved either by mechanical erosion/disruption or by dissolution, is detailed, including the combination of simultaneous disruption and dissolution. Rather similar applications concerning cells disruption and the dissolution of their organic content, especially for sludge treatment, are detailed. Finally, two main Power Ultrasonics. http://dx.

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“…As far as the pharmaceutical, ceramic, minerals, and other industries are concerned, particles of specific size ranges are almost always targeted (Raman, Abbas, and Zhu 2011). Two mechanisms of milling are identified.…”

Section: Introductionmentioning

confidence: 99%

Preparation of submicron calcite particles by combined wet stirred media milling and ultrasonic treatment

Toraman

Inal

2016

Particulate Science and Technology

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This paper investigates the grindability of calcite powder (D50 = 6.68 µm) to sub-micron particle sizes using stirred media mill (0.75 l) and ultrasonic generator (400 W, 24 kHz). The present study focuses directly on the comminution of calcite powder in water media by combined stirred milling and ultrasonic treatment and effects of some operational parameters such as grinding time (10-30 min), ultrasonic power (40-100% µm as amplitude settings) and solid ratio (10-30% w/w) on comminution. Experimental results have been evaluated on the basis of product size and width of particle size distribution (PSD).

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Particle grinding by high‐intensity ultrasound: Kinetic modeling and identification of breakage mechanisms

Cited by 22 publications

References 30 publications

Ultrasound‐facilitated particle breakage: Estimation of kinetic parameters using population balance modelling

Ultrasound‐facilitated particle breakage: Estimation of kinetic parameters using population balance modelling

Ultrasonic mixing, homogenization, and emulsification in food processing and other applications

Preparation of submicron calcite particles by combined wet stirred media milling and ultrasonic treatment

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