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Numerical Simulation of Supercritical Extraction Processes
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Carlos Manuel Silva
Veröffentlicht/Copyright:
9. Juni 2009
A mathematical model with two different methods to represent the mass transfer in the biomass matrix, (series and parallel) is proposed to simulate a supercritical extraction unit. The model is solved using the method of lines and finite differences with flow correction. Using experimental extraction curves, both models were fitted fairly well, with equivalent accuracy. Two operating regimes were detected in the selected experimental conditions: equilibrium and mass transfer controlled. The last one is more difficult to simulate, requiring specific mass transfer parameters for series and parallel alternatives, for its accurate representation.
Keywords: supercritical extraction; method of lines; finite differences; series model; parallel model
Published Online: 2009-6-9
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Schlagwörter für diesen Artikel
supercritical extraction;
method of lines;
finite differences;
series model;
parallel model
Artikel in diesem Heft
- Article
- Editorial: Special Issue Contributed by the 10th International Chemical and Biological Engineering Conference - CHEMPOR 2008
- Performance Indicators in Reactive Distillation Design
- ChemPAK Software Package as an Environment for Kinetics Scheme Evaluation
- Simulation of Membrane Separations Using a Modified Maxwell-Stefan Model
- Determination of the Wall Shear Stress by Numerical Simulation: Membrane Process Applications
- A Sequencing Method Applied to the Solution of a Linear Model of an Adsorption Column
- Removal of Dyes from the Textile Industry by Adsorption in Fixed Bed Columns: A Sustainable Process
- Application of Coagulation Systems Coupled with Adsorption on Powdered Activated Carbon to Textile Wastewater Treatment
- Numerical Simulation of Supercritical Extraction Processes
- Relations between Oxidative Stability and Antioxidant Content in Vegetable Oils Using an Accelerated Oxidation Test - Rancimat
- Minimum Fluidization Velocity of Food Materials: Effect of Moisture and Shape
- On-line Monitoring of Penicillin G Acylase (PGA) Production Using a Fuzzy Logic Algorithm
- Approach Model for Simulation of the Starch Hydrolysis by ?-Amylase and Alcohol Production from Manioc Root Starch
- Evaluation of Redundant Measurements on the Air Quality Monitoring Network of Lisbon and Tagus Valley
- Use of Simulink's Non-Linear S-function to Simulate Feedback Temperature Control of a Heterogeneous Batch Reactor
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