Navegando por Autor "Silva, Edson Antônio da"

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Extraction of palm oil using propane, ethanol and its mixtures as compressed solvent
(Elsevier, 2013-09) Jesus, Anderson Alles de; Almeida, Lays C.; Silva, Edson Antônio da; Cardozo Filho, Lúcio C.; Egues, Silvia Maria da Silva; Franceschi, Elton; Fortuny, Montserrat; Santos, Alexandre Ferreira; Oliveira, Jackson Araújo de; Sousa, Elisa Maria Bittencourt Dutra de; Dariva, Claudio
This work is aimed to investigate the extraction of palm oil using pressurized ethanol and propane as solvents. The effects of temperature (293⿿333 K), pressure (from 10 to 20 MPa), solvent flow rate (from 1 to 5 mL/min), and composition of the solvent mixture were evaluated on the oil extraction yield, and chemical profile of the extracted oils. The experiments were conducted in a 100 mL extractor coupled to a HPLC pump for ethanol and a syringe pump for the propane displacement. Global yields up to 75 wt% were obtained in the experiments. The kinetic profiles of the extractions were described by the Sovová⿿s model, which presented good agreement with the experimental observations. The palm oils extracted with distinct solvents were characterized regarding its density and viscosity in a temperature range from 293 to 343 K, its chemical profile determined by GC/MS, and carotenoid content

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