[PDF] Top 20 Braz. J. Chem. Eng. vol.29 número2

... Growth exhibited diauxic behaviour for the second group of amino acids (Arg, Leu), since they can be assimilated as carbon sources, in addition to their assimilation as nitrogen sourc[r] ... See full document

... Samples of commercial aluminum with masses varying from 34 to 37 mg were reacted to evaluate the behavior of the alkaline corrosion reaction at different temperatures, alkali concentr[r] ... See full document

... The modification of composition was done through the addition of minor compounds (acetaldehyde, acetic acid, ethyl acetate, isoamyl alcohol and methanol) in known concentrations.. The[r] ... See full document

... The integration of short-cut nitrification and denitrification via nitrite with an external carbon source process may be applied in a two-stage SBR system for nitrogen removal from ma[r] ... See full document

... extraction (petroleum ether and ethanol), and sequential extraction with different solvents (ethyl ether, ethanol and water), to compare the extraction techniques with respect to the [r] ... See full document

... A two-step pore blocking process was not observed when low cross-flow velocities were applied to the tubular membrane filtration. Basically, the drag effect of the convective flux exerted on the molecules that reached ... See full document

... Langmuir was the best model for zeolites H-Beta, H-Mordenite, and H-ZSM-5, whereas experimental data for H-USY were better fitted to the Freundlich isotherm model.. From the isotherms,[r] ... See full document

... Although the potential benefits of production planning optimization in oil refineries have long been observed with applications of linear programming in crude blending and product poo[r] ... See full document

... Abstract - This study analyzed the influence of the following parameters: overall volumetric heat transfer coefficient, coefficient of heat loss, drying rate, specific heat of the soli[r] ... See full document

... Analyses concern the effect of the impeller speed, the fluid rheology and the number of impeller blades on the induced flow patterns and the power consumption.. The predictions were co[r] ... See full document

... As can be seen from Figure 2, the highest reaction rate for desulfurization was shown when formaldehyde reached its maximum loading amount in the reactive adsorbent.. Heteropoly acid [r] ... See full document

... Thermograms obtained by differential scanning calorimetry of lyophilized liposome samples showed some peculiar characteristics in the liposomal system produced with non-purified soy l[r] ... See full document

... Similar to the forced convection case, the total drag coefficient increases with increasing value of the blockage ratio for the fixed values of Reynolds and Richardson numbers.. The c[r] ... See full document

... The aim of this research was the development of leather processing in acid medium employing enzymes that are active as unhairing agents in such a medium and the estimation of the suit[r] ... See full document

... In this study, an ultrasonic process was used for the pre-treatment of landfill leachate with the objective of improving its overall biodegradability, evaluated in terms of the BOD5/COD[r] ... See full document

... The effect of the selectivity of sc-CO 2 was apparent in the variation of the chemical profile of the extracts as a function of temperature and pressure, indicating that an increase [r] ... See full document

... kJ/kgºC were used as inert particles. The drying sample was suspended inside the drier. The temperature at the center and surface of the dryer were measured with thermocouples (Lutron+Pt 100+type K/J/R/E/T). Mass ... See full document

... However, when a bubble rises in a non-Newtonian fluid, the local viscosity of the liquid near a rising bubble is quite different and depends on the shear stress distribution caused by[r] ... See full document

... Initially the L-M parameter correlation was used for predicting the pressure drop of gas-liquid two-phase systems and then the heat transfer coefficients for liquid-liquid two-phase f[r] ... See full document

... The present work is designed to synthesize graft (sPS-g-PS) and block [sPS-g-(PS-b-PMS)] copolymers onto sPS by utilizing the NMRP of styrene and p-methylstyrene monomers by TEMPO in[r] ... See full document