[PDF] Top 20 Braz. J. Chem. Eng. vol.24 número4

... White solid; m.p.: 262-264 ℃ ; IR(KBr) υ (cm -1 ): 3238(NH), 3063(=CH), 1666(C=O), 1448(C=N); 1 H NMR(400MHz,DMSO-d 6 ): δ 11.19,11.08(2s, 2H, NH), 7.90,7.77(2d, 2H, CH=N, J=5.6Hz), 7.57-6.92(m, 10H, Ar-H), ... See full document

... A high intermittence time (maintaining the dryer in fixed bed regime or interrupting the entrance of air) caused a decrease in the total energy supplied to the grains, while the high[r] ... See full document

... Figure 3: Scanning electron microscopy of the lipid film adsorbed inside the capillary tube. The lipid film corresponds to an initial concentration of total lipids in the alcoholic pha[r] ... See full document

... The detailed mathematical description of the simultaneous gold leaching and adsorption on activated carbon that occurs in the carbon-in-leach process is somewhat intrinsically complex[r] ... See full document

... Considering a system of nonlinear algebraic equations, F(x), in accordance with Smiley and Chun (2001), the basic idea of the proposed subdivision algorithm is as follows: given an initial interval for unknown variables ... See full document

... The model is then used for predicting the adsorption of binary, ternary, and quaternary mixtures of methane, ethane, propane, and n-butane on Silicalite S-115 (Abdul-Rehman et al., 1[r] ... See full document

... In the same way, for Fluid 2, the effect of flow rate and inner cylinder rotation on the system pressure drop are presented in Figures 10 and 11, for the concentric and eccentric case[r] ... See full document

... Figure 4: Effects of temperature (A) and pressure (B) on the yield of aldehydes, esters, hydrocarbons and ketones in the CO 2 extracts of grape bagasses from jam production. and Draw[r] ... See full document

... the dried sample. Transfer area of the sample was determined from experimental data of time evolutions of the volume, diameter and thickness of the sample during drying in an independent experiment. For this calculation ... See full document

... The results show that the dry products (powdered milk and powdered whey) are the greatest generators of BOD, nitrogen and phosphorus, while the products in fluid form (UHT milk, formul[r] ... See full document

... The particle mean velocity decreases for the highest roughness due to the increase in wall collision frequency (Figure 5, top left), which results in more uniform particle concentrat[r] ... See full document

... He and Chen (1998) developed a transient stack model using CFD in order to simulate the temperature profile, current density distribution and output of a MCFC stack.. Lukas et al.[r] ... See full document

... An important accumulation of hydrolysis products with a molecular weight lower than 1 kDa (400 mg/l) had already been observed at 7 h, but metabolite concentrations in the reactor sy[r] ... See full document

... By the major contribution criteria, in descending order, the most important contributing descriptors were polarisability (P), volume (V), ring charge (C2), total charge (C), number of[r] ... See full document

... 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

... 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

... 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

... 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

... 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