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[PDF] Top 20 Braz. J. Chem. Eng. vol.25 número1

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Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... quality submissions; and continue to improve the international visibility of the journal.[r] ... See full document

1

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... A schematic diagram of the experimental system used in this investigation is shown in Figure 1. The flow reactor assembly, for gas phase reaction, was fabricated from stainless steel sections flanged together to form ... See full document

9

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... phase (1.0 mL/min) and the UV detector was set at 240 nm. Polarimetric analysis were conducted in a Perkin-Elmer 243B digital polarimeter, infrared spectra in a Perkin-Elmer 467 FTIR spectrometer. After silanization, the ... See full document

8

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... This novel adsorbent has a special selectivity to genistein which can reach more than 4 times that of the blank counterpart, and lots of nanopores distribute on the surface of the sil[r] ... See full document

6

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... More recently, Mohanty (2005) has used multilayer perceptron ANN with one hidden layer to predict VLE in terms of liquid and vapor phase compositions given the equilibrium temperatur[r] ... See full document

17

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... Figure 5 shows these results for 313K at 10 and 15 MPa compared to the results obtained by Silva (2003), using Soxhlet extraction during 6 hours.. It can be seen that the supercritical[r] ... See full document

7

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... Figure 2 shows the diagram of the apparatus used to measure heat of vaporization by Rao and Viswanath (1973) with few modifications. The calorimeter is enclosed in a jacket and the an[r] ... See full document

8

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... It is based on the finite-volume method with collocated arrangement of the variables, using high-order approximations for the linear and nonlinear average fluxes in the interfaces and [r] ... See full document

14

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... Results on the effect of nitric acid on the texture and surface chemistry of each carbon obtained are presented; in addition, how the adsorption capacity of the Pb 2+ ion in the act[r] ... See full document

9

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... The temperature profiles for sawdust with an increase in fluidizing velocity along the vertical height above the distributor plate indicate that considerable burning of fuel particles i[r] ... See full document

13

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... The TG curve of thiophosphorated compound showed five steps of degradation, Figure 5. The first initial degradation step occurs at 25°C finishing at 160°C probably due to loss of water, because of hydrophilicity ... See full document

9

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... In this work the reflux ratio, number of theoretical stages required for the separation, azeotropic mixture and separating agent feeding stages, feed temperature of separating agent, [r] ... See full document

9

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... The particle velocity, minimum spouting flow rate and characteristic fluid-dynamic curves of the spouted bed were obtained using a Eulerian granular multiphase model.. The results ob[r] ... See full document

13

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... Abstract - Interparticle forces, developed in wet spouted beds composed of a mixture of spherical particles with different size distributions, intensify particle segregation mechanisms[r] ... See full document

12

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... The purpose of the present work is to experimentally investigate the effects of a binary particle size distribution on the fluid dynamics behavior of fluidized, vibrated and vibroflui[r] ... See full document

12

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... at 25 ° using as neutralisation agent a solution of calcium hydroxide and as co-precipitation agent ferric chloride and ferrous sulphates shown in Table ... See full document

9

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... By analysis of the results obtained, the following conclusions were reached: bodies with higher aspect ratios dry first for any Biot number; higher moisture gradients in the solid are[r] ... See full document

8

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... The suitability of the two-phase model approach to describe the heat and mass transport phenomena associated with drying of shrinkable porous media is proven by well-predicted results[r] ... See full document

12

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... Bulk porosity ( ε ) was calculated by the ratio of the solid to bulk densities (Equation 2). The bulk density ( ρ b ) was determined with a texture analyzer (model: TATXT2i, Stable Micro Systems, Surrey, England). About ... See full document

8

Braz. J. Chem. Eng.  vol.25 número1

Braz. J. Chem. Eng. vol.25 número1

... In this work, an evaluation of dryer performance and the physical and chemical product properties during manufacture of spray and spouted bed dried extracts of Rosmarinus officinalis[r] ... See full document

11

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