A5060518950- Granular flow and fluidized beds
- Cyclone Separators and Fluid Dynamics
- Mineral Processing and Grinding
- Freezing and Crystallization Processes
- Electrospun Nanofibers in Biomedical Applications
- Fluid Dynamics and Turbulent Flows
- Advanced Sensor and Energy Harvesting Materials
- Food Drying and Modeling
- Dam Engineering and Safety
- Catalytic Processes in Materials Science
- Microencapsulation and Drying Processes
- Particle Dynamics in Fluid Flows
- Soil and Unsaturated Flow
- Modeling, Simulation, and Optimization
- Heat and Mass Transfer in Porous Media
- Electrohydrodynamics and Fluid Dynamics
- Heat Transfer Mechanisms
- Supercapacitor Materials and Fabrication
- Aerogels and thermal insulation
University of Belgrade
2012-2024
Institute of Chemistry, Technology and Metallurgy
2022-2024
Centre of Research Excellence in Nutrition and Metabolism
2013
The movement of particles in the fluidized bed primarily determines mixing and transfer intensities that occur between fluid. Experimental monitoring velocity marked particle was performed an inversely polypropylene, polyethylene, polystyrene particles. monitored a two-dimensional column, where water aqueous solution glycerin were used as fluidization medium. Using Tracker Video Analysis program (Tracker Analysis, Open Source Physics, 2003), mean determined, well distance crossed by x y...
Adsorption method has been used for flow visualisation and determination of the local average mass transfer coefficients around a horizontal cylinder in liquid-solid fluidized bed. The obtained concentration fields on adsorbent (silica-foils) represent clear qualitative pattern cylinder. By comparison single-phase bed, significant disturbance boundary layer by particles can be observed. Local were shown to dependent angular position with maximum determined at angle 140? (measured from...
Carbon microspheres have been synthesized by the hydrothermal method with fructose and a phosphoric acid solution at two different concentrations, which were used as precursors. The obtained materials characterized elemental analysis, X-ray powder diffraction (XRPD) scanning electron microscopy (SEM), nitrogen adsorption/desorption measurements, Fourier transform infrared (FTIR) spectroscopy. Batch sorption experiments performed to remove methylene blue (MB) from aqueous solutions varying...
One of the ways to intensify process is use rotating elements, which increase mass transfer coefficients many times over. In this study, coefficient was determined by adsorption and electrochemical methods, using a disk (RD) study effect rotation on intensity. For method, dilute solution methylene blue used, silica gel foils were used as adsorbents. The measurements performed under diffusion-controlled conditions, color intensity surface SIGMA Scan Pro. method in batch systems with volume 20...
This paper presents the results of an experimental investigation mass transfer between column wall and fluidized bed without with fast, irreversible chemical reaction. Experiments were performed in 34 mm diameter inner channel filled benzoic acid. The inert, spherical, glass particles 1.94 used as fluidization medium was aqueous solution sodium hydroxide. In order to obtain a clear result impact on intensity transfer, experiments reaction are also done systems particles. value enhancement...
In this paper, an innovative fluidized bed dryer with inert particles is presented. The system can be used for drying of solutions, suspensions and pastes in order to obtain a powdered product. experiments were performed pilot-scale cylindrical column 0.215 m diameter 1.2 mm height, glass spheres as particles. material was CuSO4 solution. effects operating conditions on the throughput product quality investigated. Main performance criteria, i.e. specific water evaporation rate, heat...
Wall-to-bed momentum, heat and mass transfer in vertical liquid-solids flow, as well single phase were studied. The aim of this investigation was to establish the analogy among those phenomena. Also, effect particles concentration on experiments hydraulic transport performed a 25.4 mm I.D. cooper tube equipped with steam jacket, using spherical glass 1.94 diameter water fluid. segment used for measurements inside coated benzoic acid. In two characteristic flow regimes observed: turbulent...
To define the fluid-dynamic properties of inverse fluidized beds, studies minimum fluidization velocity and bed expansion were performed in this work. The experiments an polypropylene polystyrene particles a cylindrical column using water aqueous glycerol solution different concentrations as fluidizing medium. dependence porosity on superficial fluid was determined experimentally for all studied media. influence medium viscosity particle density investigated. Comparison experimental data...
In this work, the coefficient of fluid-wall mass transfer in an inverse fluidized bed was determined using adsorption method. The experiments were carried out a column with diameter 45 mm spherical and non-spherical particles polypropylene polyethylene 3.3?4.9 density about 930 kg m-3. A diluted solution methylene blue used as fluidization medium, which adsorbed on part surface silica gel. obtained results showed that presence during does not contribute significantly to compared influence...
In this work the theoretical model for heat transfer from a wall to liquid-solid fluidized bed by liquid convective mechanism has been proposed and developed. The is based on thickness of boundary layer film theory. key parameter in distance between two adjacent particles which collide with wall. According model, 4 5 times more intense than single-phase flow. Additionally, wall-to-bed coefficient measured experimentally water?glass bed, different particle sizes. Comparison prediction...