Mass Transfer in Countercurrent Packed Columns: Application to Supercritical CO2 Extraction of Terpenes

1995 ◽  
Vol 34 (2) ◽  
pp. 613-618 ◽  
Author(s):  
Pedro C. Simoes ◽  
Henrique A. Matos ◽  
Paulo J. Carmelo ◽  
Edmundo Gomes de Azevedo ◽  
Manuel Nunes da Ponte
Keyword(s):  
Mass Transfer ◽  
Supercritical Co2 ◽  
Packed Columns ◽  
Supercritical Co2 Extraction

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

Ultrasonics ◽  
2010 ◽  
Vol 50 (2) ◽  
pp. 306-309 ◽  
Author(s):  
Enrique Riera ◽  
Alfonso Blanco ◽  
José García ◽  
José Benedito ◽  
Antonio Mulet ◽  
...  
Keyword(s):  
Mass Transfer ◽  
High Power ◽  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Power Ultrasonic ◽  
Extraction Processes

Supercritical CO2 extraction of solids using aqueous ethanol as static modifier is a two-step mass transfer process

2019 ◽  
Vol 143 ◽  
pp. 179-190 ◽  
Author(s):  
José M. del Valle ◽  
Ángel Martín ◽  
María José Cocero ◽  
Juan C. de la Fuente ◽  
Reynaldo de la Cruz - Quiroz
Keyword(s):  
Mass Transfer ◽  
Transfer Process ◽  
Supercritical Co2 ◽  
Aqueous Ethanol ◽  
Mass Transfer Process ◽  
Supercritical Co2 Extraction

Countercurrent packed column supercritical CO2 extraction of olive oil. Mass transfer evaluation

2004 ◽  
Vol 28 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Andrés M. Hurtado-Benavides ◽  
Francisco J. Señoráns ◽  
Elena Ibáñez ◽  
Guillermo Reglero
Keyword(s):  
Mass Transfer ◽  
Olive Oil ◽  
Supercritical Co2 ◽  
Packed Column ◽  
Supercritical Co2 Extraction

Supercritical CO2 extraction of oil from seeds of six grape cultivars: Modeling of mass transfer kinetics and evaluation of lipid profiles and tocol contents

2014 ◽  
Vol 94 ◽  
pp. 71-80 ◽  
Author(s):  
Luca Fiori ◽  
Vera Lavelli ◽  
Kurabachew Simon Duba ◽  
Pedapati Siva Charan Sri Harsha ◽  
Hatem Ben Mohamed ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Supercritical Co2 ◽  
Lipid Profiles ◽  
Supercritical Co2 Extraction ◽  
Mass Transfer Kinetics ◽  
Grape Cultivars

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

2010 ◽  
Vol 3 (1) ◽  
pp. 141-146 ◽  
Author(s):  
Enrique Riera ◽  
Alfonso Blanco ◽  
José García ◽  
José Benedito ◽  
Antonio Mulet ◽  
...  
Keyword(s):  
Mass Transfer ◽  
High Power ◽  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Power Ultrasonic ◽  
Extraction Processes

scholarly journals Optimized Supercritical CO2 Extraction Enhances the Recovery of Valuable Lipophilic Antioxidants and Other Constituents from Dual-Purpose Hop (Humulus lupulus L.) Variety Ella

Antioxidants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 918
Author(s):  
Nóra Emilia Nagybákay ◽  
Michail Syrpas ◽  
Vaiva Vilimaitė ◽  
Laura Tamkutė ◽  
Audrius Pukalskas ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Antioxidant Properties ◽  
Extraction Yield ◽  
Biologically Active ◽  
High Yield ◽  
Acid Extraction ◽  
Supercritical Co2 Extraction ◽  
Bioactive Constituents ◽  
Total Extract

The article presents the optimization of supercritical CO2 extraction (SFE-CO2) parameters using response surface methodology (RSM) with central composite design (CCD) in order to produce single variety hop (cv. Ella) extracts with high yield and strong in vitro antioxidant properties. Optimized SFE-CO2 (37 MPa, 43 °C, 80 min) yielded 26.3 g/100 g pellets of lipophilic fraction. This extract was rich in biologically active α- and β-bitter acids (522.8 and 345.0 mg/g extract, respectively), and exerted 1481 mg TE/g extract in vitro oxygen radical absorbance capacity (ORAC). Up to ~3-fold higher extraction yield, antioxidant recovery (389.8 mg TE/g pellets) and exhaustive bitter acid extraction (228.4 mg/g pellets) were achieved under the significantly shorter time compared to the commercially used one-stage SFE-CO2 at 10–15 MPa and 40 °C. Total carotenoid and chlorophyll content was negligible, amounting to <0.04% of the total extract mass. Fruity, herbal, spicy and woody odor of extracts could be attributed to the major identified volatiles, namely β-pinene, β-myrcene, β-humulene, α-humulene, α-selinene and methyl-4-decenoate. Rich in valuable bioactive constituents and flavor compounds, cv. Ella hop SFE-CO2 extracts could find multipurpose applications in food, pharmaceutical, nutraceutical and cosmetics industries.

scholarly journals Supercritical CO2 extraction of Moroccan argan (Argania spinosa L.) oil: Extraction kinetics and solubility determination

2021 ◽  
Vol 46 ◽  
pp. 101458
Author(s):  
Adil Mouahid ◽  
Isabelle Bombarda ◽  
Magalie Claeys-Bruno ◽  
Sandrine Amat ◽  
Emmanuelle Myotte ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Oil Extraction ◽  
Supercritical Co2 Extraction ◽  
Extraction Kinetics ◽  
Argania Spinosa ◽  
Solubility Determination

scholarly journals Supercritical CO2 Extraction of Palladium Oxide from an Aluminosilicate-Supported Catalyst Enhanced by a Combination of Complexing Polymers and Piperidine

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 684
Author(s):  
Andrea Ruiu ◽  
Bernhard Bauer-Siebenlist ◽  
Marin Senila ◽  
W. S. Jennifer Li ◽  
Karine Seaudeau-Pirouley ◽  
...  
Keyword(s):  
Energy Saving ◽  
Supercritical Co2 ◽  
Supported Catalyst ◽  
Precious Metals ◽  
Palladium Oxide ◽  
Supercritical Co2 Extraction ◽  
Wide Range

Precious metals, in particular Pd, have a wide range of applications in industry. Due to their scarcity, precious metals have to be recycled, preferably with green and energy-saving recycling processes. In this article, palladium extraction from an aluminosilicate-supported catalyst, containing about 2 wt% (weight%) of Pd (100% PdO), with supercritical CO2 (scCO2) assisted by complexing polymers is described. Two polymers, p(FDA)SH homopolymer and p(FDA-co-DPPS) copolymer (FDA: 1,1,2,2-tetrahydroperfluorodecyl acrylate; DPPS: 4-(diphenylphosphino)styrene), were tested with regards to their ability to extract palladium. Both polymers showed relatively low extraction conversions of approximately 18% and 30%, respectively. However, the addition of piperidine as activator for p(FDA-co-DPPS) allowed for an increase in the extraction conversion of up to 60%.

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