Author, as appears in the article.: Sacher, J. García-Llobodanin, L. López, F Segura, H. Pérez-Correa, J.R.
Department: Enginyeria Química
Abstract: In this research a phase equilibrium model to predict the recovery of several aroma compounds in spirits distilled in a traditional Charentais alembic has been developed. Due to the congeners’ quasi-infinite dilution, the properties of the mixture are assumed to be dependent on the ethanol mole fraction only. Thus, the system is treated as a quasi-binary mixture; the ethanol recovery, the dynamics of the condensation and the heat transfer processes are modeled independently of the congener's concentration. The model was calibrated with laboratory data obtained during the elaboration of pear distillates. The concentration of ethanol and 15 congeners in the distillate were measured with gas chromatography during the experiments. Fitting just two parameters, one for heating power and one for heat loss, was sufficient to reproduce the experimental ethanol recovery curves. This allowed an accurate prediction of most of the congener's recovery curves. The prediction of the concentration of five congeners, including acetaldehyde and methanol, are not significantly different from measured values. The prediction of the concentration of six congeners was biased but with relatively small errors (ranging between 8% and 25%). Significantly large prediction biases (more than 30%) were observed for ethyl hexanoate, ethyl decanoate and phenethyl alcohol.
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0960-3085
Last page: 456
Journal volume: 91
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: http://www.sciencedirect.com/science/article/pii/S0960308513000333
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1016/j.fbp.2013.04.001
Entity: Universitat Rovira i Virgili.
Journal publication year: 2013
First page: 447
Repositori URV