dynamic model of a supercritical fluid extraction plant
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Dynamic model of a supercritical fluid extraction plant ...

Feb 14, 2007  A dynamic model of a supercritical fluid extraction (SFE) process was developed and applied to the fractionation of the binary mixture squalene/methyl oleate by supercritical

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Dynamic model of a supercritical fluid extraction plant ...

A dynamic model of a supercritical fluid extraction (SFE) process was developed and applied to the fractionation of the binary mixture squalene/methyl oleate by supercritical carbon dioxide.

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Dynamic model of a supercritical fluid extraction plant ...

A dynamic model of a supercritical fluid extraction (SFE) process was developed and applied to the fractionation of the binary mixture squalene/methyl oleate by supercritical carbon dioxide. The model combines a mathematical model for each main piece of equipment of the SFE process, namely, the countercurrent packed extraction column, the ...

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Dynamic simulation of a supercritical fluid extraction ...

May 01, 2002  Non-isothermal dynamic model of a supercritical fluid extraction packed column. The Journal of Supercritical Fluids 2007, 41 (1) , 20-30. DOI: 10.1016/j.supflu.2006.09.006. João Fernandes, Rui Ruivo, Pedro Simões. Dynamic model of a supercritical fluid extraction plant.

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[Study on the dynamic model with supercritical CO2 fluid ...

METHODS: Based on the theory of counter-flow mass transfer and the molecular mass transfer between the material and the supercritical CO2 fluid under differential mass-conservation equation, a dynamics model was established and computed to compare forecasting result with the experiment process.

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Non-isothermal dynamic model of a supercritical fluid ...

May 01, 2007  A non-isothermal dynamic model of supercritical fluid extraction in countercurrent columns with structured packings has been developed. The model takes into account the differential energy and material balances along the packed bed plus a set of algebraic equations describing heat and mass transfer kinetics, the two-phase flow hydrodynamics ...

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US4898673A - Dynamic supercritical fluid extraction system ...

Dynamic supercritical fluid extraction system Download PDF Info Publication number US4898673A. US4898673A US07/061,787 US6178787A US4898673A US 4898673 A US4898673 A US 4898673A US 6178787 A US6178787 A US 6178787A US 4898673 A US4898673 A US 4898673A Authority US United States Prior art keywords mixture solvent pressure

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(PDF) Application of a Dynamic Extraction Model to the ...

Application of a Dynamic Extraction Model to the Supercritical Fluid Extraction of the Limonoid Cedrelone from Cedrela toona Journal of Chromatographic Science, 1996 William Modey

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Supercritical Fluid Extraction of Plant Flavors and Fragrances

Supercritical fluid extraction (SFE) of plant material with solvents like CO[2] , propane, butane, or ethylene is a topic of growing interest. SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids ...

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Dynamic model of a supercritical carbon dioxide heat ...

Sep 01, 2005  A dynamic model of a heat exchanger for heating supercritical carbon dioxide under turbulent conditions is presented in this paper. The model takes into account the resistance to heat transfer in the gas as well as in the heating fluid (liquid water at ambient pressure) and across the stainless steel wall of the inner tube.

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[Study on the dynamic model with supercritical CO2 fluid ...

Aug 01, 2011  [Study on the dynamic model of supercritical fluid extraction of effective ingredients from natural plant]. Zhao YQ, Liu WW, Wu ZM, Xu GX, Xu RB. Zhong Yao Cai, 29(1):56-59, 01 Jan 2006 Cited by: 1 article PMID: 16722321

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(PDF) Application of a Dynamic Extraction Model to the ...

Application of a Dynamic Extraction Model to the Supercritical Fluid Extraction of the Limonoid Cedrelone from Cedrela toona Journal of Chromatographic Science, 1996 William Modey

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Mass Transfer Models for Supercritical Fluid Extraction ...

Oct 12, 2014  Bartle KD, Clifford AA, Hawthorne SB et al (1990) A model for dynamic extraction using a supercritical fluid. J Supercrit Fluids 3:143–149 Google Scholar Bartle KD, Boddington T, Clifford AA et al (1992) The effect of solubility on the kinetics of dynamic supercritical fluid extraction.

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Supercritical Fluid Extraction of Plant Flavors and Fragrances

Supercritical fluid extraction (SFE) of plant material with solvents like CO2, propane, butane, or ethylene is a topic of growing interest. SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids the use of toxic solvents. Although today SFE is mainly used for decaffeination of coffee and tea as well as production of hop extracts on a ...

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Supercritical fluid extraction of high-value natural ...

A dynamic extraction model was applied to the obtained data and could describe extraction curves of solutes in the buttermilk. Solubility of triglycerides in supercritical CO 2 obtained in this work was almost coincident with values in the literature.

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Development of a new extraction technique and HPLC method ...

Different extraction methods, including dynamic maceration (DM), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) and supercritical-fluid extraction (SFE) were applied and compared in order to obtain a high yield of the target analytes from hemp.

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What is a Supercritical fluid History, properties ...

In the dynamic model, the fluid is allowed to flow continuously through extraction cells. Supercritical fluid applications The first applications of supercritical

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(PDF) Mathematical modeling of supercritical extraction of ...

Mathematical modeling of supercritical extraction of sage oil. Ernesto Reverchon. Related Papers. ... Analytical scale supercritical fluid fractionation and identification of single polar lipids from deoiled soybean lecithin. By Larry Taylor. Supercritical fl uid extraction from vegetable materials.

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Supercritical-CO 2 extraction, identification and ...

Apr 02, 2021  There are different models to study and estimate the solubility of solute-supercritical fluid including, solubility parameter model, semiempirical methods, equation of state and molecular dynamic ...

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Supercritical fluid extraction - Wikipedia

Supercritical fluid extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent.Extraction is usually from a solid matrix, but can also be from liquids.SFE can be used as a sample preparation step for analytical purposes, or on a larger scale to either strip unwanted material from a product (e.g ...

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Supercritical Algal Extracts: A Source of Biologically ...

The paper discusses the potential applicability of the process of supercritical fluid extraction (SFE) in the production of algal extracts with the consideration of the process conditions and yields. State of the art in the research on solvent-free isolation of biologically active compounds from the biomass of algae was presented. Various aspects related with the properties of useful compounds ...

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Peanut Oil Extraction by SFE1 - Home - Supercritical Fluid ...

Supercritical fluid extraction was successfully used to extract peanut oil from peanuts at temperatures between 40 and 80 °C and pressures of 5000-7000 psi. Static/dynamic cycling was used with a 10 minute static soak time, followed by a 10 minute dynamic interval. The overall extraction time was held constant at 3 hours. Peanut oil yield was ...

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Optimization of supercritical carbon dioxide extraction of ...

Extraction of the essential oil from a medicinal plant called Dracocephalum kotschyi Boiss was performed by green technology of supercritical carbon dioxide (SC-CO2) extraction. A Taguchi orthogonal array design with an OA16 (4(5)) matrix was used to evaluate the effects of five extraction

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Fractionation of Edible Oil Model Mixtures by ...

Dynamic model of a supercritical fluid extraction plant. AIChE Journal 2007, 53 (4) , 825-837. DOI: 10.1002/aic.11123. Luis Vázquez, Carlos F. Torres, Tiziana Fornari, F. Javier Señoráns, Guillermo Reglero. Recovery of squalene from vegetable oil sources using countercurrent supercritical carbon dioxide extraction.

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A model for dynamic extraction using a supercritical fluid ...

Abstract An idealized model is suggested for the analysis of the results of extraction in a flow system by a supercritical fluid from a matrix which contains small quantities of extractable materials, such that the extraction is not limited by solubility. The model is that of diffusion out of a homogeneous spherical particle into a medium in which the extracted species is infinitely dilute.

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Mass Transfer Models for Supercritical Fluid Extraction ...

Oct 12, 2014  Bartle KD, Clifford AA, Hawthorne SB et al (1990) A model for dynamic extraction using a supercritical fluid. J Supercrit Fluids 3:143–149 Google Scholar Bartle KD, Boddington T, Clifford AA et al (1992) The effect of solubility on the kinetics of dynamic supercritical fluid extraction.

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The Effect of solubility on the kinetics of dynamic ...

Abstract A model is developed for dynamic supercritical-fluid extraction, which includes the effects of both solvation by the fluid and diffusion out of the matrix. The model is consistent with many of the features of available experimental evidence. It predicts the forms of both typical ‘pressure threshold’ and kinetic curves for dynamic extraction.

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Supercritical extraction of essential oil from Echium ...

tion, the dynamic extraction with constant volumetric flow rate of CO2 is started for different dynamic times. The dissolved oil is dis-charged from the column, trapped, and collected via supercritical fluid expansion in the test tube at −5oC. The essential oil (golden-yellow color) contained in the extracted samples was kept in the

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Kinetic Model of Supercritical Fluid Extraction Journal ...

Abstract. A comprehensive mathematical model was developed for a packed-tube extractor geometry that can be used to predict removal efficiency versus extraction time for supercritical fluid extraction (SFE) if the same matrix parameters and extraction conditions are known.

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Mathematical modeling of supercritical fluid extraction of ...

(1996) applied the shrinking core model to describe extraction of ginger root with supercritical fluid. This model assumes that the solute is condensed within pores in solid particles and a sharp boundary develops between an oil-rich core in the porous particle and an extracted outer region where the core shrinks as the extraction proceeds.

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Supercritical-CO 2 extraction, identification and ...

Apr 02, 2021  There are different models to study and estimate the solubility of solute-supercritical fluid including, solubility parameter model, semiempirical methods, equation of state and molecular dynamic ...

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Supercritical fluid extraction of plant flavors and ...

Jun 19, 2013  Supercritical fluid extraction (SFE) of plant material with solvents like CO 2, propane, butane, or ethylene is a topic of growing interest.SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids the use of toxic solvents.

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Supercritical fluid extraction of high-value natural ...

Supercritical CO2 with/without ethanol extraction of buttermilk was carried out at 50°C and various pressure and ethanol concentration conditions. Extracts were analyzed by TLC-FID and found to be mainly composed of triglycerides, obtained from both CO2 and CO2 with ethanol extractions, and polar lipids such phosphatidylcholine and sphingomyelin, obtained only from CO2 with ethanol extraction.

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Supercritical Extraction - Batch Pressure Control

Supercritical Extraction Batch Schematic. A pump is used to increase the pressure of the carbon dioxide to a point above the supercritical pressure. A typical system might run its extraction pressures anywhere between 1800 and 5000psi. This pressure can be adjusted to allow greater selectivity in which media is targeted to be extracted.

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Supercritical fluid extraction - SlideShare

Oct 14, 2014  MODES OF SFE STATIC EXTRACTION MODE (steady state) • Sample matrix is soaked in a fixed amount of supercritical fluid • Can be compared to a teabag in a cup of water DYNAMIC EXTRACTION MODE (non-steady) • Supercritical fluid continuously passes through the sample matrix • Analogous to coffee maker 18. SFE CONTD..

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Tannins: Extraction from Plants IntechOpen

May 13, 2019  4.9 Supercritical fluid extraction. The supercritical fluid extraction is a modern and environment friendly method, which maintains the chemical and biological characters of tannins. The supercritical solvents have an important role in the efficiency of tannin extraction, and Table 4 presents some properties of useful solvents for tannin ...

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Foods Free Full-Text Supercritical Fluid Extraction ...

This study was primarily focused on the supercritical fluid extraction (SFE) of cherry seed oil and the optimization of the process using sequential extraction kinetics modeling and artificial neural networks (ANN). The SFE study was organized according to Box-Behnken design of experiment, with additional runs. Pressure, temperature and flow rate were chosen as independent variables.

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Supercritical seaweed extraction - 2005 - Wiley Analytical ...

May 18, 2005  For SFE, the seaweed was mixed with deactivated alumina to aid distribution of the extraction fluid, and 200 mL of methanol as modifier, and extracted with supercritical carbon dioxide for 10 minutes in static mode followed by 50 minutes in dynamic mode. The extract was collected in a trap and eluted with 7.5 mL hexane.

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