[PDF] Top 20 Braz. J. Chem. Eng. vol.27 número4

... The influence of ornithine feeding on CA production was evaluated in four fed-batch cultivations (FB1 to FB4) with a volumetric flow rate of 0.01 L.h -1 of a supplementary medium co[r] ... See full document

... For this reason, Neem oil cannot be directly used and so pre-esterification catalyzed by homogenous acids such as sulfuric acid, phosphoric acid or sulfonic acid is carried out to red[r] ... See full document

... The effect of the organic solvent on the characteristics of the free and immobilized inulinase was evaluated in terms of the optimal temperature and pH, the pH and temperature stabili[r] ... See full document

... Therefore, the present work provides an evaluation of some steps of an alternative process for the recovery of waste lubricant oils based upon extraction by solvents, followed by adso[r] ... See full document

... For the nickel sieves, we did not observe any cake formation during the cross-flow filtration, nor did we observe (by SEM) the presence of rutin particles on the sieves after filtrati[r] ... See full document

... The model implemented in this work captures the effect of the fluid velocity associated with the step inclination angle on the phase change process and the conduction heat transfer p[r] ... See full document

... A distinct decrease in the velocity function is observed with an increase in the particle concentration parameter, which in all cases decays from a maximum at the cylinder surface (y[r] ... See full document

... Although connection weight does not have any physical meaning, as it is a variable from a black box model, using connection weights it is possible to evaluate the influence of each active agent in the biocide for control ... See full document

... It should be remembered that the significant effects observed in this study of temperature and time on the variation of the mass of copper treated with the reaction mixture implies th[r] ... See full document

... Pervaporation-assisted esterification of oleic acid and ethanol using A15 as catalyst was performed to investigate the increase in the ester yield as a result of water removal.. Opera[r] ... See full document

... ( j i ϕ (the sensitivity of the state ˆ ) variable with respect to the unknown parameter) decreases the sensitivity of the parameter estimate to the experimental ... See full document

... This study reports calibration of a SCD-DP detector and comparison of the response factors obtained for some sulfur compounds (including sulfur dioxide, SO 2 ) with the ones available[r] ... See full document

... Total CT values seemed to increase with: (a) total applied ozone dosage, (b) percent by weight of ozone in the feed gas to the bubble contactor, (c) increasing contact time and (d) hig[r] ... See full document

... Recent studies have shown that aligned nanofibers have better molecular orientation and, as a consequence, improved mechanical properties than randomly oriented nanofibers (Fennessey [r] ... See full document

... Table 2 shows experimental results for COD (minimum values, maximum values and respective standard deviation), besides the mean percentage reduction of COD, obtained in the leachate t[r] ... See full document

... A., Influence of support material on the immobilization of biomass for the degradation of linear alkylbenzene sulfonate in anaerobic reactors. Journal of Environmental Management, p[r] ... See full document

... Abstract - Under fed-batch process conditions, the statistical analysis of trace elements was performed by application of Plackett-Burman design (for screening tests) and response surface methodology (for predicting the ... See full document

... The plastic deformation is engendered during the application of external forces (test of consolidation). This plastic deformation leads to the basis for the great cohesion force. The [r] ... See full document

... generalized Reynolds number for pineapple juice flow in the PHE with diagonal and parallel plates: experimental data ( × ), fitted correlations in Table 1 (––––) and correlations from [r] ... See full document

... and carbon dioxide-n-propanol two-phase upward flow in vertical microchannels were obtained by measuring the pressure variation before and after the absorption processes. The experime[r] ... See full document