Brazilian Journal of Chemical Engineering Impact Factor & Information

Publisher: Associação Brasileira de Engenharia Química

Journal description

Covers current research relating to all aspects of chemical engineering.

Current impact factor: 0.91

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.912
2012 Impact Factor 0.894
2011 Impact Factor 0.637
2010 Impact Factor 0.811
2009 Impact Factor 0.571
2008 Impact Factor 0.475
2007 Impact Factor 0.448
2006 Impact Factor 0.377
2005 Impact Factor 0.385
2004 Impact Factor 0.212
2003 Impact Factor 0.355
2002 Impact Factor 0.16
2001 Impact Factor 0.184

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.11
Cited half-life 6.40
Immediacy index 0.15
Eigenfactor 0.00
Article influence 0.25
Website Brazilian Journal of Chemical Engineering website
ISSN 0104-6632
OCLC 46982461
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: An attractive operation strategy for the enzymatic hydrolysis of lignocellulosics results from dividing the process into three stages with complementary goals: continuous enzyme adsorption at low-solids loading (5% w/w) with recycling of the liquid phase; continuous liquefaction at high-solids content (up to 20% w/w); and, finally, continuous or semicontinuous hydrolysis with supplementation of fresh enzymes. This paper presents a detailed modeling and simulation framework for the aforementioned operation strategies. The limiting micromixing situations of macrofluid and microfluid are used to predict conversions. The adsorption and liquefaction stages are modeled as a continuous stirred tank and a plug flow reactor, respectively. Two alternatives for the third stage are studied: a train of five cascading stirred tanks and a battery of batch reactors in parallel. Simulation results show that glucose concentrations greater than 100 g L-1 could be reached with both of the alternatives for the third stage.
    Brazilian Journal of Chemical Engineering 07/2015;
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this work, the mutual solubilities of sets of ionic liquids ([CnMIM] [TF2N] (n = 4, 8, 12), [C4PY] [TF2N], [C8MIM] [OTF]) and organic compounds (heptane, o-xylene, toluene, or water) are investigated. The experimental data measured for these systems were used to adjust the binary interaction parameters between their components for the NRTL model. The results showed that the solubility increased with temperature, with high hygroscopicity (10-1 in terms of molar fraction) of the ILs, low interactions with aliphatic hydrocarbons, high interactions with aromatic hydrocarbons and the presence of LCST. In addition, this study is the first to show that [C12MIM] [TF2N] is completely soluble in toluene and ortho-xylene between 273.15 and 373.15 K at 1 bar. The average deviations related to the molar fraction between the experimental and calculated values by the NRTL were less than 2.4%.
    Brazilian Journal of Chemical Engineering 01/2015;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Densities and refractive index of mixtures of four protic ionic liquids, based on ammonium and fatty acids, with water were measured at 298.15K and 323.15K, under atmospheric pressure. Apparent and excess molar volumes were obtained, by experiments and fitting data to Redlich – Meyer, Redlich – Kister and Prigogine-Flory–Patterson theory equations. The molar volumes values were high, suggesting strong ion – solvent interaction. The same interaction also becomes stronger with temperature increasing. Excess volume values were negative, indicating packaging efficiency ability or attractive interactions occurred in mixtures of ionic liquid + water. The PFP error (AARD) for property in excess was in the range of 1.8% to 7.2%. The PFP error for the apparent volume was in the range of 0.34% to 0.06%, lower than the RM error for the same property error, which was in the range of 0.70 to 1.55%. The Gladstone-dale model was applied to correlate the refractive index of the binary mixture with the density from the values of both pure components.
    Brazilian Journal of Chemical Engineering 01/2015;
  • Brazilian Journal of Chemical Engineering 01/2015; x(x):x.
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    ABSTRACT: Matrimid (R) 5218 hollow fiber membranes were prepared using the dry-wet spinning process. The transport properties were measured with pure gases (H-2, CO2, N-2, CH4 and O-2) and with a mixture (30% CO2 and 70% N-2) in dry and wet conditions at 25 degrees C, 50 degrees C, 60 degrees C and 75 degrees C and up to 600 kPa. Interesting values of single gas selectivity up to 60 degrees C (between 31 and 28 for CO2/N-2 and between 33 and 30 for CO2/CH4) in dry condition were obtained. The separation factor measured for the mixture was 20% lower compared to the single gas selectivity, in the whole temperature range analyzed. In saturation conditions the data showed that water influences the performance of the membranes, inducing a reduction of the permeance of all gases. Moreover, the presence of water caused a decrease of single gas selectivity and separation factor, although not so significant, highlighting the very high water resistance of hollow fiber membrane modules.
    Brazilian Journal of Chemical Engineering 10/2014; 31(4):1023. DOI:10.1590/0104-6632.20140314s00003031
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    ABSTRACT: The dynamics of microbial growth and poly(3-hydroxybutyrate) [P(3HB)] production in growth/ non-growth phases of Azhohydromonas lata MTCC 2311 were studied using a maintenance-energy-dependent mathematical model. The values of calculated model kinetic parameters were: ms1 = 0.0005 h-1, k = 0.0965, µmax = 0.25 h-1 for glucose; ms1 = 0.003 h-1, k = 0.1229, µmax = 0.27 h-1 for fructose; and ms1 = 0.0076 h-1, k = 0.0694, µmax = 0.25 h-1 for sucrose. The experimental data of biomass growth, substrate consumption, and P(3HB) production on different carbon substrates were mathematically fitted using non-linear least square optimization technique and similar trends, but different levels were observed at varying initial carbon substrate concentration. Further, on the basis of substrate assimilation potential, cane molasses was used as an inexpensive and renewable carbon source for P(3HB) production. Besides, the physico-chemical, thermal, and material properties of synthesized P(3HB) were determined which reveal its suitability in various applications.
    Brazilian Journal of Chemical Engineering 07/2014; 31(2):313-323. DOI:10.1590/0104-6632.20140312s00002434