Simulation and techno-economic optimization of the supercritical CO2 extraction of Eucalyptus globulus bark at industrial scale
authors Rodrigues, VH; de Melo, MMR; Portugal, I; Silva, CM
nationality International
journal JOURNAL OF SUPERCRITICAL FLUIDS
author keywords BIC modeling; Biorefinety; Eucalyptus globulus bark; RSM-COM; Supercritical CO2 extraction
keywords RESPONSE-SURFACE METHODOLOGY; FLUID EXTRACTION; TRITERPENIC ACIDS; OPERATING-CONDITIONS; PHENOLIC-COMPOUNDS; ENERGY EVALUATION; RESIDUES; CURVES; LABILL; YIELDS
abstract This work addresses economic and process aspects of the supercritical fluid extraction (SFE) of Eucalyptus globulus bark at industrial scale. Broken plus intact cells (BIC) model was applied to existing data and new SFE curves were simulated. Then, statistical optimization was performed with Response Surface Methodology (RSM) involving of 5 factors (pressure, temperature, cosolvent content, solvent flow rate and extraction time), and four responses: Total Yield (eta(Total)), Productivity, Cost of Manufacturing (COM) and Process Energy. The design and simulation of the industrial process (Aspen Plus (R) software) was performed including the employment of co-solvent in the system. The best COM scored 28.1 sic kg(extract)(-1), where eta(Total) was 0.84-0.96 wt.%, Productivity reached 311-362 ton(extract)year(-1), and Process Energy scored 1.46-2.10 GJ kg(extract)(-1). These results underline that SFE provides an extended margin for trade-offs, and arguments towards the integration of SFE technology to biorefine the bark of E. globulus in pulp mills.
publisher ELSEVIER SCIENCE BV
issn 0896-8446
year published 2019
volume 145
beginning page 169
ending page 180
digital object identifier (doi) 10.1016/j.supflu.2018.11.025
web of science category Chemistry, Physical; Engineering, Chemical
subject category Chemistry; Engineering
unique article identifier WOS:000460071900019
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journal impact factor 3.122
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