[PDF] Top 20 Braz. J. Chem. Eng. vol.22 número2

... In what follows, we are going to present some results of our model (Temperature distribution, moisture content profiles and stresses) and to discuss the influence of some parameters [r] ... See full document

... The result was an average concentration (mass percentage) of 57 %, which is well below that reported in the literature (safrole content of 90 %) (Costa, 1999). Figure 3.6 shows the sa[r] ... See full document

... The change of particle size distribution during agglomeration, modeled by population balances, is linked to the heat and mass transfer model.. A new technique is derived to extract aggl[r] ... See full document

... The main goal of this work was to verify the effect of a fluid velocity profile that is not flat by means of an experimental and simulation study in a concurrent moving bed, using soy[r] ... See full document

... moisture levels above 30% the interaction between water and polymer chains in the amarath grain did not seem to affect the diffusive process, as the constancy of the effective diffusi[r] ... See full document

... Moreover, this scheme, different from the one suggested by Clement et al. (1991), allows easy identification of the particle fraction that leaves the dryer at t > ∆τ. Based on this, water evaporation and the heat ... See full document

... Moreover, run 4 samples had many fracture points between the initial compression and deformation at maximum force, indicating a crispy characteristic, and their water activity value[r] ... See full document

... The monthly averages of energy demand, incident radiation in the collector and heat supplied by the system in the solar-assisted crop drying are shown in Figure 7. The monthly solar [r] ... See full document

... During the frying experiments some parameters (oil temperature, oil type and size of the sample) were varied in order to analyze their effect on the drying of sewage sludge in a deep [r] ... See full document

... The simulated results on particle velocity and profile for voidage in the spout and the annular regions obtained for the cylindrical spouted bed were compared with the experiment[r] ... See full document

... Shibi, I.G. and Anirudhan, T.S., Synthesis, characterization, and application as a mercury(II) sorbent of banana stalk (Musa paradisiaca) - Polyacrylamide grafted copolymer bearing carboxyl groups. Industrial & ... See full document

... For tensile strength at the break, the highest values were also obtained at 30 o C and 40% RH, whereas the highest value of tensile deformation was obtained at 30ºC but at the highest[r] ... See full document

... A first-order kinetics model was obtained, in which the drying time constant was a function of the drying conditions, and the equilibrium material moisture content was described by the[r] ... See full document

... HP Chem-Station  , a scanning electronic microscope DSM 960 Zeiss and an optical microscope Olympus  BX60MIV connected to an image analysis system Image Pro-plus  ... See full document

... The aim of the following examinations is to study the stability behaviour of the FB by using of a one-dimensional population balance which is coupled with the heat and mass transfers [r] ... See full document

... Nevertheless, the implementation of electromagnetic waves could be one of the most promising drying techniques in the future, especially because of its potential for savings in energy[r] ... See full document

... The combination of high wood temperature and the elapsed drying time causes the sugars and proteins to react by a complicated chemical reaction, termed as Maillard reaction, which ult[r] ... See full document

... From Table 1, it can be seen that the moisture diffusion coefficient and hence the drying rate increases with an increase in the drying temperature from 80 O C to 120 O C.. The rel[r] ... See full document

... Using the WADS, it has been found that the work of separation and amount of picking depend on roll surface material, contamination and temperature, and on the composition, moisture con[r] ... See full document

... In the previously described wastewater treatment plant, the Naratherm ® paddle dryer consists of a 4.08 m long horizontal jacketed trough, through which pass two 22 rpm rotating shafts. On each shaft, hollow ... See full document