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Brazilian Journal of Chemical Engineering

Print version ISSN 0104-6632On-line version ISSN 1678-4383

Abstract

FONSECA, A.P.; OLIVEIRA, J.V.  and  LIMA, E.L.. Neural networks for predicting mass transfer parameters in supercritical extraction. Braz. J. Chem. Eng. [online]. 2000, vol.17, n.4-7, pp.517-524. ISSN 0104-6632.  http://dx.doi.org/10.1590/S0104-66322000000400016.

Neural networks have been investigated for predicting mass transfer coefficients from supercritical Carbon Dioxide/Ethanol/Water system. To avoid the difficulties associated with reduce experimental data set available for supercritical extraction in question, it was chosen to use a technique to generate new semi-empirical data. It combines experimental mass transfer coefficient with those obtained from correlation available in literature, producing an extended data set enough for efficient neural network identification. With respect to available experimental data, the results obtained to benefit neural networks in comparing with empirical correlations for predicting mass transfer parameters.

Keywords : Neural network; Mass transfer coefficients; Supercritical carbon dioxide; Ethanol.

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