[PDF] Top 20 Braz. J. Chem. Eng. vol.25 número3

... Based on the data obtained using this experimental design, equations were generated to establish the correlation between the independent variables (i.e., oil, flocculant and electrol[r] ... See full document

... The results obtained in this work show that provided that the experimental data are available, asphaltene precipitation in petroleum mixtures (during different natural and/or artifici[r] ... See full document

... The hybrid bioreactor (upflow anaerobic sludge blanket reactor plus biofilter) proved to be efficient in the treatment of wastewaters from the household and personal products industry[r] ... See full document

... The resulting approach is able to predict the steady state behavior of the chemical composition of the furnace recovery boiler, - especially the reduction efficiency when different ope[r] ... See full document

... release energy to sustain the endothermic gasification reactions. The lower limit of ER in an autothermal gasifier is fixed by considering a variety of factors like the minimum quanti[r] ... See full document

... To validate the algorithms used in this work (Simulated Annealing and SubDivNL subdivision method), some results presented in the literature for liquid-liquid stability calculations w[r] ... See full document

... Aqueous Phase, Cequ , Molar Concentration of Acid in the Organic Phase, Corg, Partitioning coefficient, D , Loading Factor, Z , Extraction Efficiency, E , for the Extraction of [r] ... See full document

... column (25 cm x 4.6 mm, 5µm, Supelco, USA). For the determination of the oil content in the extracts the mobile phase used was acetone/acetonitrile (62:38% v/v) and the flow rate was 1.0 ml/min (González et a., ... See full document

... The main objective of this work was to compare conventional and “premium” garlic extracts in terms of yield and quality, with the latter being obtained using supercritical carbon dioxi[r] ... See full document

... Figures 1(a) and (b) contain pressure-temperature diagrams for the AOT concentrations investigated at glycerol/olive oil overall compositions of 20 wt% and 25 wt%, respectively. It can be seen from Figure 1(a) ... See full document

... In order to control this parameter and consequently reduce the proportion of the product that does not meet the humidity specification, a 9-4-1 neural network architecture was establis[r] ... See full document

... Based on the results of this study, the following conclusions were drawn. 1) Drying took place mainly in the falling rate period followed by a constant rate period after a short heati[r] ... See full document

... Rani Hemamalini, R., Partheeban, P., Sarat Chandra J., Sundaram, S. (2005), The Effect of Pressure Drop Across Horizontal Pipe and Control Valve for Air/Palm Oil Two Phase Flow. International Journal of Heat and ... See full document

... The volumetric overall mass transfer coefficient increases with an increase in Q , while it d decreases with an increase in Q and the effect of c dispersed phase flow rate on K a is [r] ... See full document

... These results are in accordance with those presented by Bot et al. (2004), Zimeri and Kokini (2003), Nogueira (2001) and Bishay (1998). All these authors studied the rheological behavior of inulin solutions and found ... See full document

... Raw textile effluent was exposed to UV irradiation alone and the removal of COD, color and BOD was found to be highest at a 25 min. exposure time, i.e., 28%, 26% and 34%, respectively, as shown in Figure 2, and ... See full document

... l. To close the set of equations for the liquid phase, one more equation is necessary to obtain the six scalar unknowns: density, the three components of velocity, temperature, and li[r] ... See full document

... putida PGA1 culture in a defined aqueous medium with a fatty acid mixture as carbon source can be described by using a Tessier- type model which incorporates the limiting substrate ([r] ... See full document

... Therefore, in order to obtain the exact values, both the minimum fluidizing velocity and the corresponding pressure drop for the ash samples were measured on the laboratory [r] ... See full document

... The fuzzy optimal topology designed (via the genetic optimization) in this paper is very simple and contains a minimal number of rules. The advantages of the proposed designing methodologies are that it reduces the ... See full document