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dc.contributor.author
Piqueras, Cristian Martin
dc.contributor.author
Eberhardt, Andrea Mariel
dc.contributor.author
Vega, Daniel Alberto
dc.contributor.author
Damiani, Daniel Eduardo
dc.date.available
2017-09-22T15:22:21Z
dc.date.issued
2014-11-20
dc.identifier.citation
Piqueras, Cristian Martin; Eberhardt, Andrea Mariel; Vega, Daniel Alberto; Damiani, Daniel Eduardo; Improving the purification of hydroxyethyl starch by means of supercritical and near-critical fluid extraction using CO2 and a mixture of CO2-ethanol: A combined experimental and modeling study; Elsevier Science; Chemical Engineering And Processing; 88; 20-11-2014; 89-98
dc.identifier.issn
0255-2701
dc.identifier.uri
http://hdl.handle.net/11336/24927
dc.description.abstract
The hydroxyethyl starch purification was performed by means of supercritical and near-critical fluid extraction within single-phase conditions using CO2 and a mixture of CO2?ethanol. Hydroxyethyl starch with concentrations of ethylene glycol in the range of 28,000 to 3000 ppm was successfully purified in a single stage. The intraparticle mass transfer was determined through a hot sphere diffusion model. The values of the effective diffusion coefficients, obtained from the model fitted to experimental data, indicate that the hindrance for ethylene glycol extraction is due to mass transfer limitations attributed to the closed pore structure generated during the crystallization of the solid. In the same sense, the strong interaction between the contaminant and the hydroxyethyl starch at specific points of the surface could also be a detrimental factor. We show that, under these working conditions, most of the contamination can be removed, providing a simple process which saves the high consumptions of deionized water employed in the traditional ultrafiltration.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Hydroxyethyl Starch
dc.subject
Supercritical Carbon Dioxide
dc.subject
Ethylene Glycol
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Purification
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Otras Ingeniería Química
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Ingeniería Química
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Improving the purification of hydroxyethyl starch by means of supercritical and near-critical fluid extraction using CO2 and a mixture of CO2-ethanol: A combined experimental and modeling study
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-02T21:00:01Z
dc.journal.volume
88
dc.journal.pagination
89-98
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Piqueras, Cristian Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Eberhardt, Andrea Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
dc.description.fil
Fil: Damiani, Daniel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.journal.title
Chemical Engineering And Processing
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0255270114002499
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cep.2014.11.012
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