[PDF] Top 20 Braz. J. Chem. Eng. vol.24 número2

... The aim of the present work was to study alcoholic and acetic fermentation kinetics and also to verify the effects of the initial concentrations of ethanol and acetic acid as two inde[r] ... See full document

... When aluminum is added to the coatings, the hardness of the coatings is improved due to the formation of a composite material, and a ternary phase appears at the higher substrate temp[r] ... See full document

... different CEPT-TF modules using different coagulant types. According to coagulant cost, FeSO4 has the lowest annual cost per kg BOD removed that ranges between 0.008-.006 $/kg BOD at [r] ... See full document

... It was possible to obtain a final solution with 99.5% pure indium by loading the column with the iminodiacetic acid chelating resin Amberlite ® IRC748, using a 5.0mL/min flow rate and[r] ... See full document

... For the calculation of the physical properties of the input streams, which may vary in time and contain one or more phases, a TPN flash procedure (Michelsen, 1982b) was used. The solution of a TVN flash (Espósito et al., ... See full document

... In this work, nonlinear phenomenological and empirical models were compared with respect to their capability to predict the melt index and polymer yield of a low-density polyethylene p[r] ... See full document

... The experimental results show an improvement of HDPE mechanical strength as dose increases, indicating the predominance of cross-linking over oxidative degradation and that lower doses[r] ... See full document

... case of alkenes this result and the likeness of the general behaviour between the alkenes and n-alkanes studied, lead one to think that the absorption properties of these alkenes are [r] ... See full document

... The usual boundary conditions considered in the simulation to reproduce an experiment are (i) uniform pressure profile, (ii) velocity profile or (iii) mass flow rate, which can be pre[r] ... See full document

... Using the P25 from Degussa, dark adsorption experiments were performed. The catalyst was kept in contact with solutions of formic acid for 24 hours with occasional stirring in order to achieve equilibrium. Four ... See full document

... i j ) are a function of solute and flow rate; the external mass transfer resistance is negligible ( Bi → ∞ ); the solid is made of spherical particles of uniform radius; solutions are diluted and thus adsorption ... See full document

... In order to better understand the connection between the bulk physical properties and the physicochemical parameters of the dispersion, one may use the framework of colloid science an[r] ... See full document

... In order to assess the dye removal capacity of the submersed plant system, univariate analysis of variance (ANOVA) and Duncan homogeneity tests may be used to determine the influences[r] ... See full document

... Abstract - In this work, the effects of electrical double layer (EDL) near the solid/ liquid interface, on three dimensional heat transfer characteristic and pressure drop of water flo[r] ... See full document

... (2000) also studied the effect of temperature on the extraction of proteins (zeins) from corn. They credited the positive effect of temperature on protein extraction to the fact that z[r] ... See full document

... At lower initial BSA and lysozyme concentrations, the adsorption capacities increased linearly with the initial protein concentration, suggesting that there were enough adsorption si[r] ... See full document

... intervals were used for the time discrete partitions because shorter time intervals at the start are essential (Lyra, 1993) to dampen the oscillations that damage FEM refinement; and [r] ... See full document

... In the case of turbulent round jets laden with solids, Laín and Aliod (2003) using a Reynolds stress model for the solid phase in a two-fluid-like approach, were able to capture the [r] ... See full document

... Figure 3(a) shows that the effect of vibration on voidage at the bottom of the fluidized bed is slightly greater and the values of voidage in the radial direction are very close with [r] ... See full document

... ƒ The proposed equations for prediction of the load in two-segment flights and the average length of particle fall generated very precise estimations from the experimental data. There[r] ... See full document