Process Intensification:  Precipitation of Barium Sulfate Using a Spinning Disk Reactor

Jachuck, Roshan; Baffi, G.; Cafiero, LM; Chianese, Angelo

doi:10.1021/ie010654w

Cited by 92 publications

(113 citation statements)

References 8 publications

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“…For example, the attainment of micro-mixing is determined by the influence of the rotation speed (Cafiero et al, 2002), and the size of the particles produced is strongly affected by the feeding point location, as recently shown by (Stoller et al, 2009). Thus, the film hydrodynamics characterizations are very important to optimize the operating conditions of the RDR.…”

Section: Rotating Disk Reactormentioning

confidence: 80%

“…10, No. 8; Recently, the production of nanoparticles using a rotating disk reactor (RDR) has been proposed for the production of several compounds (Burns & Jachuck, 2005;Cafiero, Baffi, Chianese & Jachuck, 2002;Stoller, Miranda & Chianese, 2009). This kind of apparatus mostly comprises a horizontal rotating disk confined in a cylindrical case, as shown in Figure 14.…”

Section: Rotating Disk Reactormentioning

confidence: 99%

“…1) In the liquid film flowing over the disk surface, a micro-mixing condition can be achieved with reasonable energy consumption (Burns & Jachuck, 2005;Cafiero et al, 2002).…”

Section: Rotating Disk Reactormentioning

confidence: 99%

See 2 more Smart Citations

Rotating Disk Apparatus: Types, Developments and Future Applications

Rashed¹,

Abdulbari²,

Salleh³

et al. 2016

MAS

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Power consumption reduction investigations attracted the attention of enormous numbers of researchers in the past few decades due to its high academic and economic impacts. The pumping power losses during the transportation of crude oils are considered as one of the main power consuming applications due to the turbulent mode of transportation. Investigating the possible solutions for this problem is expensive and time consuming due to the large apparatuses needed to simulate the flow in real pipelines. Rotating disk apparatus (RDA) is an instrument mainly comprising a rotating disk and an electrical motor to rotate the disk, which was implemented as an efficient and economical path to simulate what can be done in pipelines through generating a controlled degree of turbulence. This technique was also used in many other scientific applications due to its dynamic mode of operation. For example, a rotating disk electrode was used in electrodeposition processes and to characterize deposition film thickness and uniformity. The rotating disk reactor was employed to investigate the reaction rate between fluids and solid surfaces. The present work evaluates the RDA from different prospective and applications in order to introduce it as an efficient research tools for future dynamic investigations.

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Section: Rotating Disk Reactormentioning

confidence: 80%

Section: Rotating Disk Reactormentioning

confidence: 99%

See 1 more Smart Citation

Rotating Disk Apparatus: Types, Developments and Future Applications

Rashed¹,

Abdulbari²,

Salleh³

et al. 2016

MAS

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“…6-8) and population equation (Eqs. (11,12) we could calculate the discretized density number of particles (P(t,x,L i )) and discretized diameter L i .…”

Section: The Model and Simulation Resultsmentioning

confidence: 99%

“…Therefore, development of ''smart,'' cheap and energysaving method, which allows one to obtain nanocrystallites of calcium carbonate, is in great demand in industry. However, despite a large number of investigations described in the literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], the mechanisms of the molecular level of calcium carbonate precipitation as well as the aggregation and formation processes [2][3][4][5][6][7][9][10][11][12][13][14] are still unclear and have not so far been fully understood. It concerns also the classical nucleation pathway of calcium carbonate precipitation, i.e.…”

Section: Introductionmentioning

confidence: 99%

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Wszelaka‐Rylik

Piotrowska

Gierycz

2014

J Therm Anal Calorim

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In the present experiments, the carbonation process in multiphase system was carried out using the reactor with rotating discs. Calcite was produced by controlled fast precipitation through gaseous CO 2 adsorption in Ca(OH) 2 slurry. Furthermore, the reaction kinetics' were controlled by disc's revolution speed in the range from 80 rpm through 120 to 160 rpm. Initial concentration of the slurry ranged between 54 and 110 mM L -1 . The aggregates of crystals precipitated in the aqueous solution were of sub-micrometric size. Dynamic light scattering method showed that mean aggregate diameter decreased with the higher mixing rate as long as the mixing condition was homogenous (up to 160 rpm). Thermogravimetric analysis revealed that the surface of calcite was polluted by unwanted, different compounds amount of which depends on the initial concentration of the slurry. Therefore, in order to obtain chemically pure calcite, CaCO 3 powder was heated up in the laboratory oven. In order to explain the mechanism of calcite particles' aggregation, the simulation of the aggregates formation has been performed based on the new model taking into account kinetics of the multiphase reaction, crystal growth and their agglomeration. The obtained data on crystal morphology during the precipitation process have been compared with the model simulation results. The internally consistent model very well describes both the formation and the aggregation of the calcite nanoparticles, and the same can be used and recommended for accurate calculations of the particle and aggregates' sizes as well as their distribution in the reactor.

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Process Intensification, 2. Phase Level

Freund

Sundmacher

2011

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Thermodynamic Methods 1.1. Property Shifting by Molecular Design 1.1.1. Ionic Liquid Systems 1.1.2. Perfluorinated Systems 1.1.3. Solid‐Bound Systems 1.2. Property Shifting by Pressure, Temperature, and Solvent Composition 1.2.1. Supercritical Fluids 1.2.2. Thermoregulated Phase‐Transfer Catalysts 1.2.3. Thermoregulated Microemulsion Systems 1.2.4. Temperature‐Dependent Multicomponent Solvent Systems 2. Kinetic Methods 2.1. Electromagnetic Tools 2.1.1 Photochemical Induction 2.1.2 Microwave Dielectric Heating 2.2. Fluid‐Mechanical Tools 2.2.1. Acoustic Cavitation 2.2.2. Hydrodynamic Cavitation 2.2.3. Supersonic Flows 2.2.4. Centrifugal Forces

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Process Intensification: Precipitation of Barium Sulfate Using a Spinning Disk Reactor

Cited by 92 publications

References 8 publications

Rotating Disk Apparatus: Types, Developments and Future Applications

Rotating Disk Apparatus: Types, Developments and Future Applications

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Process Intensification, 2. Phase Level

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