title: High-power ultrasonic system for the enhancement of mass transfer in supercritical CO2 extraction processes.
abstract: Oil is an important component of almonds and other vegetable substrates that can show an influence on human health. In this work the development and validation of an innovative, robust, stable, reliable and efficient ultrasonic system at pilot scale to assist supercritical CO(2) extraction of oils from different substrates is presented. In the extraction procedure ultrasonic energy represents an efficient way of producing deep agitation enhancing mass transfer processes because of some mechanisms (radiation pressure, streaming, agitation, high amplitude vibrations, etc.). A previous work to this research pointed out the feasibility of integrating an ultrasonic field inside a supercritical extractor without losing a significant volume fraction. This pioneer method enabled to accelerate mass transfer and then, improving supercritical extraction times. To commercially develop the new procedure fulfilling industrial requirements, a new configuration device has been designed, implemented, tested and successfully validated for supercritical fluid extraction of oil from different vegetable substrates.
authors.affiliation: Grupo de Ultrasonidos de Potencia, Dpto. Señales, Sistemas y Tecnologías Ultrasónicas, Instituto de Acústica, CSIC, Serrano 144, E28006 Madrid, Spain. eriera@ia.cetef.csic.es
authors.forename: Enrique
authors.initials: E
authors.lastname: Riera
authors.forename: Alfonso
authors.initials: A
authors.lastname: Blanco
authors.forename: José
authors.initials: J
authors.lastname: García
authors.forename: José
authors.initials: J
authors.lastname: Benedito
authors.forename: Antonio
authors.initials: A
authors.lastname: Mulet
authors.forename: Juan A
authors.initials: JA
authors.lastname: Gallego-Juárez
authors.forename: Miguel
authors.initials: M
authors.lastname: Blasco
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D025924:Chromatography, Supercritical Fluid; D007700:Kinetics; D008956:Models, Chemical; D010938:Plant Oils / Q000737:chemistry*; D011312:Pressure; D012639:Seeds / Q000737:chemistry*; D012995:Solubility; D013696:Temperature; D014465:Ultrasonics
chemical_list: D010938:Plant Oils; D002245:Carbon Dioxide