Density and viscosity of glycerol acetates + CO2 mixtures at high pressure

Autores
Fortunatti Montoya, Mariana; Hegel, Pablo Ezequiel; Pereda, Selva
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Glycerol acetates are high-added value glycerol derived biosurfactants that find applications in different industrial sectors. Previous studies show the supercritical CO2 technology has a great potential for the fractionation of these highly viscous and non- volatile products (mono, di, and triacetyl glycerol) according to the quality standards of the food and cosmeceutical sectors. A proper design of fractionation columns requires a robust thermodynamic model for phase equilibrium and PVT predictions, as well as of proper correlations for physical properties like viscosity to carry out a good assessment of the mass transfer problems to estimate the height of theoretical stages. Physiochemical properties of these multicomponent mixtures are difficult to predict due to the complex nature of the system. Thus, in this work, we determine experimentally the density and viscosity of CO2 saturated glycerol acetates mixtures at different pressures (30 bar to 150 bar), temperatures (25 °C to 50 °C) and CO2 concentrations (30 mol % to 70 mol %). Operating conditions were selected based on phase equilibrium predictions with the GCA-EOS of a high-pressure fractionation column. First, a variable volume equilibrium cell is used to measure bubble points and saturated liquid molar volumes of glycerol acetates + CO2 mixtures. Thereafter, a high-pressure falling ball type viscometer is used to determine the dynamic viscosity of saturated liquid mixtures in the same range of pressure, temperature and CO2 concentrations. As expected, temperature and CO2 concentration has a significant effect on both density and viscosity measurements. The measured molar volumes are between 70 cm3/mol and 130 cm3/mol, while the viscosities are between 5 mPa.s and 20 mPa.S, according to CO2 concentration and temperature.
Fil: Fortunatti Montoya, Mariana. 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
Fil: Hegel, Pablo Ezequiel. 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
Fil: Pereda, Selva. 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
V Iberoamerican Conference on Supercritical Fluids
Campinas
Brasil
Universidad Estatal de Campinas
Materia
glycerol acetates
fractionation
CO2
density and viscosity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/156446
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/156446
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Density and viscosity of glycerol acetates + CO2 mixtures at high pressureFortunatti Montoya, MarianaHegel, Pablo EzequielPereda, Selvaglycerol acetatesfractionationCO2density and viscosityhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Glycerol acetates are high-added value glycerol derived biosurfactants that find applications in different industrial sectors. Previous studies show the supercritical CO2 technology has a great potential for the fractionation of these highly viscous and non- volatile products (mono, di, and triacetyl glycerol) according to the quality standards of the food and cosmeceutical sectors. A proper design of fractionation columns requires a robust thermodynamic model for phase equilibrium and PVT predictions, as well as of proper correlations for physical properties like viscosity to carry out a good assessment of the mass transfer problems to estimate the height of theoretical stages. Physiochemical properties of these multicomponent mixtures are difficult to predict due to the complex nature of the system. Thus, in this work, we determine experimentally the density and viscosity of CO2 saturated glycerol acetates mixtures at different pressures (30 bar to 150 bar), temperatures (25 °C to 50 °C) and CO2 concentrations (30 mol % to 70 mol %). Operating conditions were selected based on phase equilibrium predictions with the GCA-EOS of a high-pressure fractionation column. First, a variable volume equilibrium cell is used to measure bubble points and saturated liquid molar volumes of glycerol acetates + CO2 mixtures. Thereafter, a high-pressure falling ball type viscometer is used to determine the dynamic viscosity of saturated liquid mixtures in the same range of pressure, temperature and CO2 concentrations. As expected, temperature and CO2 concentration has a significant effect on both density and viscosity measurements. The measured molar volumes are between 70 cm3/mol and 130 cm3/mol, while the viscosities are between 5 mPa.s and 20 mPa.S, according to CO2 concentration and temperature.Fil: Fortunatti Montoya, Mariana. 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; ArgentinaFil: Hegel, Pablo Ezequiel. 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; ArgentinaFil: Pereda, Selva. 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; ArgentinaV Iberoamerican Conference on Supercritical FluidsCampinasBrasilUniversidad Estatal de CampinasUniversidad Estatal de Campinas2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/156446Density and viscosity of glycerol acetates + CO2 mixtures at high pressure; V Iberoamerican Conference on Supercritical Fluids; Campinas; Brasil; 2019; 64-64CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.prosciba.fea.unicamp.br/sites/Vprosciba/files/Book%20of%20Abstracts%20V%20Prosciba.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:23:45Zoai:ri.conicet.gov.ar:11336/156446instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:23:46.154CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
title Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
spellingShingle Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
Fortunatti Montoya, Mariana
glycerol acetates
fractionation
CO2
density and viscosity
title_short Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
title_full Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
title_fullStr Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
title_full_unstemmed Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
title_sort Density and viscosity of glycerol acetates + CO2 mixtures at high pressure
dc.creator.none.fl_str_mv Fortunatti Montoya, Mariana
Hegel, Pablo Ezequiel
Pereda, Selva
author Fortunatti Montoya, Mariana
author_facet Fortunatti Montoya, Mariana
Hegel, Pablo Ezequiel
Pereda, Selva
author_role author
author2 Hegel, Pablo Ezequiel
Pereda, Selva
author2_role author
author
dc.subject.none.fl_str_mv glycerol acetates
fractionation
CO2
density and viscosity
topic glycerol acetates
fractionation
CO2
density and viscosity
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Glycerol acetates are high-added value glycerol derived biosurfactants that find applications in different industrial sectors. Previous studies show the supercritical CO2 technology has a great potential for the fractionation of these highly viscous and non- volatile products (mono, di, and triacetyl glycerol) according to the quality standards of the food and cosmeceutical sectors. A proper design of fractionation columns requires a robust thermodynamic model for phase equilibrium and PVT predictions, as well as of proper correlations for physical properties like viscosity to carry out a good assessment of the mass transfer problems to estimate the height of theoretical stages. Physiochemical properties of these multicomponent mixtures are difficult to predict due to the complex nature of the system. Thus, in this work, we determine experimentally the density and viscosity of CO2 saturated glycerol acetates mixtures at different pressures (30 bar to 150 bar), temperatures (25 °C to 50 °C) and CO2 concentrations (30 mol % to 70 mol %). Operating conditions were selected based on phase equilibrium predictions with the GCA-EOS of a high-pressure fractionation column. First, a variable volume equilibrium cell is used to measure bubble points and saturated liquid molar volumes of glycerol acetates + CO2 mixtures. Thereafter, a high-pressure falling ball type viscometer is used to determine the dynamic viscosity of saturated liquid mixtures in the same range of pressure, temperature and CO2 concentrations. As expected, temperature and CO2 concentration has a significant effect on both density and viscosity measurements. The measured molar volumes are between 70 cm3/mol and 130 cm3/mol, while the viscosities are between 5 mPa.s and 20 mPa.S, according to CO2 concentration and temperature.
Fil: Fortunatti Montoya, Mariana. 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
Fil: Hegel, Pablo Ezequiel. 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
Fil: Pereda, Selva. 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
V Iberoamerican Conference on Supercritical Fluids
Campinas
Brasil
Universidad Estatal de Campinas
description Glycerol acetates are high-added value glycerol derived biosurfactants that find applications in different industrial sectors. Previous studies show the supercritical CO2 technology has a great potential for the fractionation of these highly viscous and non- volatile products (mono, di, and triacetyl glycerol) according to the quality standards of the food and cosmeceutical sectors. A proper design of fractionation columns requires a robust thermodynamic model for phase equilibrium and PVT predictions, as well as of proper correlations for physical properties like viscosity to carry out a good assessment of the mass transfer problems to estimate the height of theoretical stages. Physiochemical properties of these multicomponent mixtures are difficult to predict due to the complex nature of the system. Thus, in this work, we determine experimentally the density and viscosity of CO2 saturated glycerol acetates mixtures at different pressures (30 bar to 150 bar), temperatures (25 °C to 50 °C) and CO2 concentrations (30 mol % to 70 mol %). Operating conditions were selected based on phase equilibrium predictions with the GCA-EOS of a high-pressure fractionation column. First, a variable volume equilibrium cell is used to measure bubble points and saturated liquid molar volumes of glycerol acetates + CO2 mixtures. Thereafter, a high-pressure falling ball type viscometer is used to determine the dynamic viscosity of saturated liquid mixtures in the same range of pressure, temperature and CO2 concentrations. As expected, temperature and CO2 concentration has a significant effect on both density and viscosity measurements. The measured molar volumes are between 70 cm3/mol and 130 cm3/mol, while the viscosities are between 5 mPa.s and 20 mPa.S, according to CO2 concentration and temperature.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/156446
Density and viscosity of glycerol acetates + CO2 mixtures at high pressure; V Iberoamerican Conference on Supercritical Fluids; Campinas; Brasil; 2019; 64-64
CONICET Digital
CONICET
url http://hdl.handle.net/11336/156446
identifier_str_mv Density and viscosity of glycerol acetates + CO2 mixtures at high pressure; V Iberoamerican Conference on Supercritical Fluids; Campinas; Brasil; 2019; 64-64
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.prosciba.fea.unicamp.br/sites/Vprosciba/files/Book%20of%20Abstracts%20V%20Prosciba.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Universidad Estatal de Campinas
publisher.none.fl_str_mv Universidad Estatal de Campinas
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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