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High-power ultrasonic system for the enhancement of mass transfer in supercritical CO2 extraction processes

AuthorsRiera, Enrique; Blanco Blanco, Alfonso; García, José; Benedito Fort, José J.; Mulet Pons, Antonio; Gallego Juárez, Juan Antonio; Blasco Piquer, Miguel
KeywordsUltrasonic processes
Power ultrasound
Mass transport
Supercritical fluid extraction
Carbon dioxide
Issue Date2010
CitationUltrasonics 50 : 306-309 (2010)
AbstractOil 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 CO2 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.
Description4 páginas, 6 figuras
Publisher version (URL)http://dx.doi.org/10.1016/j.ultras.2009.09.015
Appears in Collections:(IA) Artículos
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