Mass transfer in the process of drying of porous materials

Investigation of Granulation Process and Influence of Intensifying Additions on Strength of Superphosphate Granules

“…,, S C C C  current concentration and moisture concentration on granule surface and in flow capacity. Using a set of experimental investigations according to the determination of effective diffusion coefficient in porous media [12], one can prepare empirical dependence of a view [13] A solution of equation 5at given boundary conditions and insignificant values of Fourier number can be prepared as…”

“…The numerous experimental and practical results [13][14][15] showed that the molecular diffusion coefficient of a moisture in porous media is fluctuated within the ranges of Thus, as a result of moistening, a granule surface becomes friable and loses strength, which leads to a deformation, to surface deterioration and adherence of granules. First of all, such state has been connected with moisture effective diffusion depending on porosity of structure.…”

Effect of moisture evaporation from diatomaceous earth pellets on storage stability ofSteinernema glaseri

“…Furthermore, the diffusion coefficient D is also subject to 290 variation of pellet morphology such as the tortuosity τ and porosity η, which determine the 291 effective diffusion coefficient Deff and particle size distribution that defines the microstructure. 292 An improvement in the model could be the integration of η variation of the pellet to determine 293 the effective diffusion coefficient and its relation to the rate of moisture loss and moisture content 294 (Derouane, Andre, & Lucas, 1988;Kelbaliev & Manafov, 2009). Additionally, the "flow" or 295 "mobility" is a factor that takes into account the increase in viscosity of the water particles 296 adjacent to the surface of clay minerals, which tends to reduce the rate of diffusive solute 297 transport in soil (Shackelford & Moore, 2013).…”

“…51 The DE is a porous and hygroscopic material that loses moisture depending on the initial 52 moisture and relative humidity of the surrounding medium; the loss of moisture occurs through 53 molecular transport and surface evaporation (Callahan et al, 1982;Zhang & Datta, 2004;Shah & 54 Khan, 2014). 55 Fick's law of diffusion establishes that molecular transport in porous media occurs from a region 56 of high concentration to another of low concentration and is an important source of motion on a 57 microscopic scale in the porous structures (Kelbaliev & Manafov, 2009). Molecular diffusion is 58 extremely low, so its importance has meaning only over short distances or long timescales 59 because they control mechanism moisture permeability of porous materials whose pore sizes are 60 in the approximate range of 0.1 to 10 µm (Takahashi & Fuji, 2002;Potter, Wiggert, & Ramadan, 61 2011).…”

Banana Drying Kinetics

“…It is one of the oldest methods of preservation and widely applied to banana fruits owing to its simplicity, ease of operation and cost-effectiveness. Besides these advantages, drying decreases the bulk of foods by reducing the volume which reduces packaging, handling and storage and transportation costs as well as ease of handling and processing operations [17,18,[20][21][22][23][24][25].…”