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The information obtained by one-dimensional Radioactive Particle Tracking is used to make an industrially relevant description of the macroscopic mixing of a three-phase bubble column. The objective is to characterize and compare the solid motion of granular activated carbon (dp = 1 mm) and calcium alginate beads (dp = 5 mm), widely used as adsorbents for pollutants and as support for catalysts, enzymes, and living organisms. The particles are suspended in water with upflowing air into a 0.1 m diameter and a 1 m height bubble column. The liquid–solid suspensions are in batch, and the air superficial velocity ranges within 0.01–0.12 m/s. The solid axial hold-up distribution of the carbon–water–air system is biased towards the bottom of the column, while the alginate–water–air system is more even. The axial dispersion coefficients obtained in both systems have a positive linear behavior within the operating range, which is uncannily marked in the carbon-water-air system, and it is an order of magnitude less than the alginate–water–air system. The contrasts of the two systems are mostly explained as a function of the solid densities. Axial mixing time distribution shows a sharp minimum at the second quartile of the column. Flow regime transition is assessed using information theory.
Gabriel Salierno; Mauricio Maestri; Julia Picabea; Miryan Cassanello; Cataldo De Blasio; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Industrially relevant Radioactive Particle Tracking study on the motion of adsorbent granules suspended in a pilot-scale water–air three-phase fluidized bed. Chemical Engineering Research and Design 2021, 173, 305 -316.
AMA StyleGabriel Salierno, Mauricio Maestri, Julia Picabea, Miryan Cassanello, Cataldo De Blasio, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Industrially relevant Radioactive Particle Tracking study on the motion of adsorbent granules suspended in a pilot-scale water–air three-phase fluidized bed. Chemical Engineering Research and Design. 2021; 173 ():305-316.
Chicago/Turabian StyleGabriel Salierno; Mauricio Maestri; Julia Picabea; Miryan Cassanello; Cataldo De Blasio; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2021. "Industrially relevant Radioactive Particle Tracking study on the motion of adsorbent granules suspended in a pilot-scale water–air three-phase fluidized bed." Chemical Engineering Research and Design 173, no. : 305-316.
Currently, various industrial processes are carried out in fluidized bed reactors, such as fermentation, water treatment, and algae growth. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses the motion of fluidized calcium alginate spheres under the influence of an upward fluid flow within a 1.2 m high and 0.1 m inner diameter acrylic column. The Radioactive Particle Tracking technique is a proper methodology to study the internal dynamics of these kinds of equipment. Liquid-Solid Fluidized Bed is compared with the Gas-Liquid-Solid Fluidized Bed operation mode in terms of mixing behavior. Data gathered is analyzed in view of Shannon entropy as a dynamic mixing measure. Mixing times are found to be of the same order of magnitude. However, the Liquid-Solid Fluidized Bed achieves a lower homogenization degree. Also, we found good agreement between two criteria for assessing stability for the mixed state: the Shannon Entropy time-series plateau and the Glansdorff-Prigogine criterion based on Fisher information.
Gabriel Salierno; Anton Gradišek; Mauricio Maestri; Julia Picabea; Miryan Cassanello; Cataldo De Blasio; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Comparison of the Fluidized State Stability From Radioactive Particle Tracking Results Applied. 2021, 1 .
AMA StyleGabriel Salierno, Anton Gradišek, Mauricio Maestri, Julia Picabea, Miryan Cassanello, Cataldo De Blasio, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Comparison of the Fluidized State Stability From Radioactive Particle Tracking Results Applied. . 2021; ():1.
Chicago/Turabian StyleGabriel Salierno; Anton Gradišek; Mauricio Maestri; Julia Picabea; Miryan Cassanello; Cataldo De Blasio; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2021. "Comparison of the Fluidized State Stability From Radioactive Particle Tracking Results Applied." , no. : 1.
Biomass with a large amount of moisture is well-suited to be processed by supercritical water gasification, SCWG. The precipitation of inorganics, together with char formation and re-polymerization, can cause reactor plugging and stop the process operations. When plugging occurs, sudden injections of relatively large mass quantities take place, influencing the mass flow dynamics significantly in the process. Reactor plugging is a phenomenon very well observed during SCWG of industrial feedstock, which hinders scale-up initiatives, and it is seldom studied with precision in the literature. The present study provides an accurate evaluation of continuous tubular reactor dynamics in the event of sudden injections of water. An interpretation of the results regarding water properties at supercritical conditions contributes to comprehending mass and heat transfer when plugging occurs. Experiments are then compared to SCWG of a biomass sample aiming to give key insights into heat transfer and fluid dynamics mechanisms that could help develop operational and control strategies to increase the reliability of SCWG. In addition, a simplified model is presented to assess the effect of material integrity on burst-event likelihood, which states that SCWG is safe to operate, at 250 bar and 610 °C, in tubular reactors made of 0.22 wall thickness-to-diameter ratio Inconel-625 with superficial microfractures smaller than 30 µm. We also suggest improvement opportunities for the safety of SCWG in continuous operation mode.
Cataldo De Blasio; Gabriel Salierno; Andrea Magnano. Implications on Feedstock Processing and Safety Issues for Semi-Batch Operations in Supercritical Water Gasification of Biomass. Energies 2021, 14, 2863 .
AMA StyleCataldo De Blasio, Gabriel Salierno, Andrea Magnano. Implications on Feedstock Processing and Safety Issues for Semi-Batch Operations in Supercritical Water Gasification of Biomass. Energies. 2021; 14 (10):2863.
Chicago/Turabian StyleCataldo De Blasio; Gabriel Salierno; Andrea Magnano. 2021. "Implications on Feedstock Processing and Safety Issues for Semi-Batch Operations in Supercritical Water Gasification of Biomass." Energies 14, no. 10: 2863.
Solid-liquid dissolution is a central step in many industrial applications such as pharmaceutical, process engineering, and pollution control. Accurate mathematical models are proposed to improve reactor design and process operations. Analytical methods are significantly beneficial in the case of iterative methods used within experimental investigations. In the present study, a detailed analytical solution for the general case of solid particles dissolving in multiphase chemical reaction systems is presented. In this model, the authors consider a formulation that considers the particles’ shape factor. The general case presented could be utilized within different problems of multiphase flows. These methods could be extended to different cases within the chemical engineering area. Examples are illustrated here in relation to limestone dissolution taking place within the Wet Flue Gas Desulfurization process, where calcium carbonate is dissolving in an acidic environment. The method is the most common used technology to abate SO2 released by fuel combustion. Limestone dissolution plays a major role in the process. Nevertheless, there is a need for improvements in the optimization of the WFGD process for scale-up purposes. The mathematical model has been tested by comparison with experimental data from several mild acidic dissolution assays of sedimentary and metamorphic limestone. We have found that R2 ⊂ 0.92 ± 0.06 from dozens of experiments. This fact verifies the model qualifications in capturing the main drivers of the system.
Cataldo De Blasio; Gabriel Salierno; Donatella Sinatra; Miryan Cassanello. Modeling of Limestone Dissolution for Flue Gas Desulfurization with Novel Implications. Energies 2020, 13, 6164 .
AMA StyleCataldo De Blasio, Gabriel Salierno, Donatella Sinatra, Miryan Cassanello. Modeling of Limestone Dissolution for Flue Gas Desulfurization with Novel Implications. Energies. 2020; 13 (23):6164.
Chicago/Turabian StyleCataldo De Blasio; Gabriel Salierno; Donatella Sinatra; Miryan Cassanello. 2020. "Modeling of Limestone Dissolution for Flue Gas Desulfurization with Novel Implications." Energies 13, no. 23: 6164.
Berry fruits are well recognized for health-promoting constituents due to their properties of free radical scavengers which confer antioxidant activity against cellular oxidation reactions. Elderberry fruit contains one of the highest levels of anthocyanins. The objective of this work was to evaluate the storage stability of total monomeric anthocyanins, cyanidin-3-glucoside (one of two major anthocyanins in elderberry), and color parameters in freeze-dried elderberry encapsulated with a low proportion of different carriers (Maltodextrin, Capsul™, Promitor ™, and κ-carrageenan). Encapsulated samples were stored at two different water activities (aw) 0.10–0.20 and 0.43 at 38 ℃ for 90 days and evaluated for the content of monomeric anthocyanins, cyanidin-3-glucoside, color parameters, and physical characteristics. Freeze-dried powders remained free-flowing during storage at 38 ℃ with aw 0.12–0.20, but agglomeration occurred at aw = 0.43. Total anthocyanins and color parameter a* (redness) remained unchanged during storage at the lower aw. Glass transition temperatures (Tg) were determined and mostly correlated with observed physical phenomena. The powders had a very high total monomeric anthocyanin contents as high as 13 mg/g (cyanidin-3-glucoside). The addition of encapsulants in low proportions allowed the researchers to obtain elderberry powders with a very high concentration of total monomeric anthocyanins. aw plays a key role in all stability parameters studied.
Rosa Baeza; Virginia Sánchez; Gabriel Salierno; Fabricio N. Molinari; Paula López; Jorge Chirife. Storage stability of anthocyanins in freeze-dried elderberry pulp using low proportions of encapsulating agents. Food Science and Technology International 2020, 27, 135 -144.
AMA StyleRosa Baeza, Virginia Sánchez, Gabriel Salierno, Fabricio N. Molinari, Paula López, Jorge Chirife. Storage stability of anthocyanins in freeze-dried elderberry pulp using low proportions of encapsulating agents. Food Science and Technology International. 2020; 27 (2):135-144.
Chicago/Turabian StyleRosa Baeza; Virginia Sánchez; Gabriel Salierno; Fabricio N. Molinari; Paula López; Jorge Chirife. 2020. "Storage stability of anthocyanins in freeze-dried elderberry pulp using low proportions of encapsulating agents." Food Science and Technology International 27, no. 2: 135-144.
The motion of calcium alginate spheres in a liquid-solid fluidized bed is examined by radioactive particle tracking (RPT) and simulated by computational fluid dynamics coupled with discrete element method (CFD-DEM). Observables relevant for phenomenological models of the solid motion determined from RPT are compared with those arising from the CFD-DEM simulations. Bed expansion, solid distribution, time averaged velocity fields and axial dispersion coefficients calculated from simulations reasonably agree with the experimental values. The influence of the liquid inlet distribution on simulations results is examined. A non-negligible effect is observed on the predicted velocity profiles, solid distribution and dispersion coefficients, mainly in the entrance region. Uniform liquid distribution at the entrance generally predicts a less steeped profile. When the liquid inlet distribution is parameterized considering the geometry of the experimental distributor, the fitting of the solid mean axial velocity and solid distribution radial profiles, judged from a sum of squares of relative errors, improves in 90% and 80%, respectively, compared to results obtained when considering a uniform liquid distribution at the entrance.
Mauricio Maestri; Gabriel Salierno; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. CFD-DEM modeling of solid motion in a water-calcium alginate fluidized column and its comparison with results from radioactive particle tracking. Chemical Engineering Journal 2018, 377, 120339 .
AMA StyleMauricio Maestri, Gabriel Salierno, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. CFD-DEM modeling of solid motion in a water-calcium alginate fluidized column and its comparison with results from radioactive particle tracking. Chemical Engineering Journal. 2018; 377 ():120339.
Chicago/Turabian StyleMauricio Maestri; Gabriel Salierno; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2018. "CFD-DEM modeling of solid motion in a water-calcium alginate fluidized column and its comparison with results from radioactive particle tracking." Chemical Engineering Journal 377, no. : 120339.
Gabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Solid motion in a three-phase bubble column examined with Radioactive Particle Tracking. Flow Measurement and Instrumentation 2018, 62, 196 -204.
AMA StyleGabriel Salierno, Mauricio Maestri, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Solid motion in a three-phase bubble column examined with Radioactive Particle Tracking. Flow Measurement and Instrumentation. 2018; 62 ():196-204.
Chicago/Turabian StyleGabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2018. "Solid motion in a three-phase bubble column examined with Radioactive Particle Tracking." Flow Measurement and Instrumentation 62, no. : 196-204.
Gabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions. Chinese Journal of Chemical Engineering 2018, 26, 1370 -1382.
AMA StyleGabriel Salierno, Mauricio Maestri, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions. Chinese Journal of Chemical Engineering. 2018; 26 (6):1370-1382.
Chicago/Turabian StyleGabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2018. "Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions." Chinese Journal of Chemical Engineering 26, no. 6: 1370-1382.
Gabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Calcium alginate beads motion in a foaming three-phase bubble column. Chemical Engineering Journal 2017, 324, 358 -369.
AMA StyleGabriel Salierno, Mauricio Maestri, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Calcium alginate beads motion in a foaming three-phase bubble column. Chemical Engineering Journal. 2017; 324 ():358-369.
Chicago/Turabian StyleGabriel Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2017. "Calcium alginate beads motion in a foaming three-phase bubble column." Chemical Engineering Journal 324, no. : 358-369.
The influence of the synthesis procedure of supported Prussian blue nanoparticles (PBNP) on their activity and stability as a Fenton-type catalyst is studied.
Lucila Doumic; Gabriel Salierno; Cinthia Paula Ramos; Patricia M. Haure; Miryan Cassanello; Maria Alejandra Ayude. “Soluble” vs. “insoluble” Prussian blue based catalysts: influence on Fenton-type treatment. RSC Advances 2016, 6, 46625 -46633.
AMA StyleLucila Doumic, Gabriel Salierno, Cinthia Paula Ramos, Patricia M. Haure, Miryan Cassanello, Maria Alejandra Ayude. “Soluble” vs. “insoluble” Prussian blue based catalysts: influence on Fenton-type treatment. RSC Advances. 2016; 6 (52):46625-46633.
Chicago/Turabian StyleLucila Doumic; Gabriel Salierno; Cinthia Paula Ramos; Patricia M. Haure; Miryan Cassanello; Maria Alejandra Ayude. 2016. "“Soluble” vs. “insoluble” Prussian blue based catalysts: influence on Fenton-type treatment." RSC Advances 6, no. 52: 46625-46633.
Lucila Doumic; G. Salierno; M. Cassanello; P. Haure; M. Ayude. Efficient removal of Orange G using Prussian Blue nanoparticles supported over alumina. Catalysis Today 2015, 240, 67 -72.
AMA StyleLucila Doumic, G. Salierno, M. Cassanello, P. Haure, M. Ayude. Efficient removal of Orange G using Prussian Blue nanoparticles supported over alumina. Catalysis Today. 2015; 240 ():67-72.
Chicago/Turabian StyleLucila Doumic; G. Salierno; M. Cassanello; P. Haure; M. Ayude. 2015. "Efficient removal of Orange G using Prussian Blue nanoparticles supported over alumina." Catalysis Today 240, no. : 67-72.
The inclusion of a structured packing as internal in a liquid‐solid fluidized bed allows expansion of the liquid velocity operation range before elutriation, promoting the liquid solid contact and mixing. The bed expansion of liquid‐solid fluidized beds provided with structured packing as internals is examined, for solids denser than the liquid phase and within a wide range of operating conditions. A correlation to estimate the bed expansion in liquid‐solid fluidized beds using structured packing as internals is developed. In addition, the feasibility of employing structured packing as internals for favoring classification of different density particles is demonstrated by analyzing the mass elutriated from the column at different liquid velocities for single particles or binary mixtures.
Stella Piovano; Gabriel L. Salierno; Emiliano Montmany; Mauro D'agostino; Mauricio Maestri; Miryan Cassanello. Bed Expansion and Particle Classification in Liquid Fluidized Beds with Structured Internals. Chemical Engineering & Technology 2015, 38, 423 -430.
AMA StyleStella Piovano, Gabriel L. Salierno, Emiliano Montmany, Mauro D'agostino, Mauricio Maestri, Miryan Cassanello. Bed Expansion and Particle Classification in Liquid Fluidized Beds with Structured Internals. Chemical Engineering & Technology. 2015; 38 (3):423-430.
Chicago/Turabian StyleStella Piovano; Gabriel L. Salierno; Emiliano Montmany; Mauro D'agostino; Mauricio Maestri; Miryan Cassanello. 2015. "Bed Expansion and Particle Classification in Liquid Fluidized Beds with Structured Internals." Chemical Engineering & Technology 38, no. 3: 423-430.
Gabriel L. Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Discrete axial motion of a radioactive tracer reconstructed from the response of axially aligned detectors: Application to the analysis of a bubble column dynamics. Chemical Engineering Science 2013, 100, 402 -412.
AMA StyleGabriel L. Salierno, Mauricio Maestri, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Discrete axial motion of a radioactive tracer reconstructed from the response of axially aligned detectors: Application to the analysis of a bubble column dynamics. Chemical Engineering Science. 2013; 100 ():402-412.
Chicago/Turabian StyleGabriel L. Salierno; Mauricio Maestri; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2013. "Discrete axial motion of a radioactive tracer reconstructed from the response of axially aligned detectors: Application to the analysis of a bubble column dynamics." Chemical Engineering Science 100, no. : 402-412.
Lucila I. Doumic; Gabriel Salierno; Miryan C. Cassanello; Patricia M. Haure; María A. Ayude. Prussian Blue onto Activated Carbon as a Catalyst for Heterogeneous Fenton-Like Processes. International Journal of Chemical Engineering and Applications 2013, 295 -300.
AMA StyleLucila I. Doumic, Gabriel Salierno, Miryan C. Cassanello, Patricia M. Haure, María A. Ayude. Prussian Blue onto Activated Carbon as a Catalyst for Heterogeneous Fenton-Like Processes. International Journal of Chemical Engineering and Applications. 2013; ():295-300.
Chicago/Turabian StyleLucila I. Doumic; Gabriel Salierno; Miryan C. Cassanello; Patricia M. Haure; María A. Ayude. 2013. "Prussian Blue onto Activated Carbon as a Catalyst for Heterogeneous Fenton-Like Processes." International Journal of Chemical Engineering and Applications , no. : 295-300.
Gabriel L. Salierno; María Sol Fraguío; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. Bubble columns dynamics inferred from the motion of a radioactive tracer followed by axially aligned detectors. Chemical Engineering Journal 2012, 207-208, 450 -461.
AMA StyleGabriel L. Salierno, María Sol Fraguío, Stella Piovano, Miryan Cassanello, María Angélica Cardona, Daniel Hojman, Héctor Somacal. Bubble columns dynamics inferred from the motion of a radioactive tracer followed by axially aligned detectors. Chemical Engineering Journal. 2012; 207-208 ():450-461.
Chicago/Turabian StyleGabriel L. Salierno; María Sol Fraguío; Stella Piovano; Miryan Cassanello; María Angélica Cardona; Daniel Hojman; Héctor Somacal. 2012. "Bubble columns dynamics inferred from the motion of a radioactive tracer followed by axially aligned detectors." Chemical Engineering Journal 207-208, no. : 450-461.