[PDF] Top 20 Braz. J. Chem. Eng. vol.28 número4

... cellulose adsorption capacity and cellulose hydrolysis rate constants were found to have the greatest impact on ethanol production (for a fi xed substrate loading, enzyme loading, and[r] ... See full document

... The applicability of the characteristic velocity method to this type of column for the analysis of the flood point was examined and a marked deviation was observed between experimental [r] ... See full document

... Abstract - Submerged cultivation of Saccharopolyspora erythraea , at different initial spore concentrations, was carried out to study the inter-relationship between inoculum concentra[r] ... See full document

... The capacity of PAMAM dendrimers to enhance the solubility of ABZ was studied by spectroscopic methods for different ABZ-dendrimer systems in aqueous solution using full G3 and G3OH a[r] ... See full document

... Desalination is a novel application of zeolitic membranes for the treatment of hazardous wastes (Duke et al., 2007), although other inorganic membranes have been used to concentrate [r] ... See full document

... The catalytic degradation of high density polyethylene (HDPE) under nitrogen using a laboratory fluidized bed reactor operating at 360°C with a catalyst to polymer feed ratio of 2:1 a[r] ... See full document

... Figure 4 presents nitrogen adsorption isotherms for samples obtained by room temperature synthesis, using gels with low NH 4 OH/SiO 2 molar ratios (2.15 or smaller); these presented [r] ... See full document

... In accordance with the glycerol output adopted, the electricity consumption of the biodiesel production plant should be 2.49 x 10 6 kWh/year (Vecchio, 2006). It was assumed that the [r] ... See full document

... Abstract - This study assessed the removal efficiency of organic matter and how it relates to the decrease of toxic and mutagenic effects when an anaerobic reactor is used to treat the[r] ... See full document

... Two procedures were tested according to the cultivation of the cells. For cultures prepared in shake flasks, cells were centrifuged (Avanti™ centrifuge J-251 - Beckmann) at 11,325 g during 30 min, resuspended in ... See full document

... The analysis of the kinetic results suggests that the reaction is initiated by heterogeneous generation of free radicals on the hematite surface, but as soluble iron (III) and iron (II[r] ... See full document

... A fermentation experiment was performed in the present work using an initial glucose concentration of 250 g.L -1 , which was obtained by enzymatic hydrolysis of sorghum grains under t[r] ... See full document

... This strategy aimed at increasing the specific growth rate at the beginning of the P(3HB) production phase by raising the carbon source concentration in the culture medium before nit[r] ... See full document

... Abstract - This work assessed the applicability of the redox mediator anthraquinone-2,6-disulfonate (AQDS) to enhance colour removal in mesophilic UASB reactors treating textile wastew[r] ... See full document

... ƒ The j and f factors increase with increasing fin pitch at constant other geometrical parameters and Re number. The velocity vectors on the specific surface are presented in Fig. 8 at the same axial location (z = ... See full document

... 4) There is no definite trend for total unburned hydrocarbon emissions (HC) with increasing engine power and water content. 5) NOx emissions increased with increasing engine power a[r] ... See full document

... It was demonstrated that zeolite 13X adsorbed carbon dioxide and nitrogen to its total capacity and, thus, the equilibrium of CO2 and N2 adsorption for CO2/N2 mixtures can be very we[r] ... See full document

... Figure 4 shows the concentrations of phenol and oxidized nitrogen forms during the denitritation stage, as well as the efficiencies of phenol removal at the end of the anoxic stages a[r] ... See full document

... Time course studies of dry cell biomass formation, surfactin production, surface tension reduction and substrate utilization by the culture media of Bacillus subtilis MTCC 2423 grow[r] ... See full document

... In this context, the main focus of this work was to investigate the residual esterification activity and the product conversion after 10 successive cycles of utilization of a commerci[r] ... See full document