Bouriakova, Alexandra

De Clercq, Jeriffa

Thybaut, Joris

English

Bouriakova, AlexandraTW110000900794528020021063501D0FAD68-F0EE-11E1-A9DE-61C894A0A6B4

De Clercq, JeriffaTW110019912401478010011896220000-0003-2858-1276F5548208-F0ED-11E1-A9DE-61C894A0A6B4

Thybaut, JorisTW118010012420610000-0002-4187-7904F575C0F8-F0ED-11E1-A9DE-61C894A0A6B4

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From fundamental insights to economic viability: recovering natural products from deodorizer distillates

Ghent University Academic Bibliography

FROM FUNDAMENTAL INSIGHTS TO ECONOMIC VIABILITY:RECOVERING NATURAL PRODUCTS FROM DEODORIZER DISTILLATESDEPARTMENT OF MATERIALS, TEXTILES AND CHEMICAL ENGINEERING Alexandra Bouriakova1, Jeriffa De Clercq2, Joris W. Thybaut1*1 Laboratorium for Chemical Technology, Technologiepark 914, B-9052 Gent2 Industrial Catalysis and Adsorption Technology, Valentin Vaerwyckweg 1, B-9000 Gent* Joris.Thybaut@UGent.beoildeodorizerdistillateedible oilA RICH SOURCE OF HEALTH BENEFICIAL COMPONENTS The enrichment of minor components by extraction of FAEE in supercritical CO2 (sc-CO2) after (trans)esterification of the glycerides/free fatty acids in the distillate.FFA + EtOH → FAEE + H2Ok1TG + EtOH → DG + FAEEk2DG + EtOH → MG + FAEEk3MG + EtOH → GLY + FAEEk4CONCLUSIONS FUTURE WORKThis presentation reports work undertaken in the context of the project “SUCCeSS, SUperCritiCal Solutions for Side-stream Valorization ” of CATALISTI.COMMERCIAL SCALE PROCESS DESIGNA  (10-8 m3 mol-1 s-1) Ea (kJ mol-1)k1 7.91± 1.51 35.6 ± 25.9k2 37.3 ± 4.50 24.7 ± 16.4k3 23.0 ± 5.99 61.6 ± 38.6k4 41.3 ± 21.1 160 ± 103• The proposed bimolecular model is capable in predicting the experimental trends with statistically significant and physically relevant parameters.• The same unit can be used for the esterification and extractionof different ODD or ethanol feedstock.• Soybean ODD is economically more interesting due to the higher minor content.€ 8.44 M/year€ 30.57 M/year€ 5.87 M/year€ 30.48 M/yearbio-ethanolazeotropioethanoleotrope EtOHsc-esterification plug flow reactor44 experiments with ODDτ = 7.5 – 60 minT = 523 – 573 KP = 7.5 – 15 MPaEtOH/ODD = 0.3 – 1.5 g g-1sc-CO2 extractionT = 313 – 343 KP = 10 – 15 MPaCO2/feed = 1 – 4 g g-1   EXPERIMENTAL INVESTIGATIONGOALminors 18.27 wt% 63.90 wt%glycerides 24.16 wt% 13.60 wt%FFA 56.02 wt% 20.44 wt%FAME 1.55 wt% 2.06 wt%• Perform experiments with alternative alcohols (e.g. butanol) and investigate the influence on the model• Optimization of sc-CO2 extraction based on the experimental data acquired from a bench scale setup.ESTERIFICATION MODELINGmaximum value added after succesful extraction (xminor> 99 wt%)• statistically significant model  Ftest = 5.38 104 > Ftab = 3.84• statistically significant & physically relevant parameters no correlations between parameters Ea,TGDG < Ea,DGMG < Ea,MGGLY consecutive transesterification is not favored • model reproduces experimental trends15 MPa543 K 473 K 0.1 MPaQ = 0 WNplates = 3323 KxEtOH > 90 wt%< 1 gEtOH g-1ODDXFFA > 95 %XTG > 50 %B1B2B3B4B5B6B7B1B3B3B3EtOH-Fvs. ODD EXTRACTION FEEDPURGEazeotrope vs. bioethanolPURGEB1B2B1B1B2B2B6‘MINOR’ CONCENTRATEFAME+FAEESTEROLS10 MPa10 MPa and 313 KCO2B7B30.1 MPa 633 KB7B30.1 MPa 298 KNstage = 5xsterols > 99 wt%xFAME+FAEE = 60 wt%xminors = 56 wt%xglycerides = 41 wt%Property method: RK Aspen &  UNIQUACProperty method: UNIQ-RKsoybeansunflower• higher FAEE formation with ODDvs. higher minor content in      ODD  depending on whichapplication is favored• azeotrope EtOH has a lower waste products (“others”) The complex mixture includes major constituents such as FFA, glycerides, esters and high value “minor” components i.e. tocopherols, sterols, squalene, with applications in food, cosmetics and pharmaceuticals. 02550751000 20 40 60Molar conversion (%)Residence time (min)XFFA at 523K, 548 K, 573 KXTG at 523 K, 548 K, 573 K02550751000 20 40 60Mass fraction (%)Residence time (min)T = 548 K – P = 15 MPaEtOH/ODD = 0.6 g g-1P = 15 MPaEtOH/ODD = 0.6 g g-1FAEEFFATGDG

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From fundamental insights to economic viability: recovering natural products from deodorizer distillates

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Ghent University Academic Bibliography