INVESTIGADORES
DIAZ Maria Soledad
artículos
Título:
Compressed solvents for the extraction of fermentation products within a hollow fiber membrane
Autor/es:
GEOFFREY D. BOTHUN; BARBARA L. KNUTSON; HERBERT J. STROBEL; SUE E. NOKES; ESTEBAN A. BRIGNOLE; MARIA SOLEDAD DIAZ
Revista:
JOURNAL OF SUPERCRITICAL FLUIDS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2003 vol. 25 p. 119 - 134
ISSN:
0896-8446
Resumen:
The feasibility of extracting aqueous ethanol and acetone within a hollow fiber membrane contactor (HFC) has been
examined using compressed CO2 (69 bar), ethane (69 bar), and propane (34.5 bar) at ambient temperature. Ethanol and
acetone were chosen as model fermentation products to further examine the potential for extractive fermentation with
compressed fluids. Aqueous and compressed solvent streams were contacted within a single hydrophobic isotactic
polypropylene membrane fiber (0.6 mm ID; 106.7 cm in length; 75% porosity), providing a porous barrier between the
two immiscible phases. The amount of solute extracted was determined as a function of the aqueous flowrate (tubeside)
and molar solvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluid2 (69 bar), ethane (69 bar), and propane (34.5 bar) at ambient temperature. Ethanol and
acetone were chosen as model fermentation products to further examine the potential for extractive fermentation with
compressed fluids. Aqueous and compressed solvent streams were contacted within a single hydrophobic isotactic
polypropylene membrane fiber (0.6 mm ID; 106.7 cm in length; 75% porosity), providing a porous barrier between the
two immiscible phases. The amount of solute extracted was determined as a function of the aqueous flowrate (tubeside)
and molar solvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidve fermentation with
compressed fluids. Aqueous and compressed solvent streams were contacted within a single hydrophobic isotactic
polypropylene membrane fiber (0.6 mm ID; 106.7 cm in length; 75% porosity), providing a porous barrier between the
two immiscible phases. The amount of solute extracted was determined as a function of the aqueous flowrate (tubeside)
and molar solvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvent streams were contacted within a single hydrophobic isotactic
polypropylene membrane fiber (0.6 mm ID; 106.7 cm in length; 75% porosity), providing a porous barrier between the
two immiscible phases. The amount of solute extracted was determined as a function of the aqueous flowrate (tubeside)
and molar solvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidviding a porous barrier between the
two immiscible phases. The amount of solute extracted was determined as a function of the aqueous flowrate (tubeside)
and molar solvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvent to feed ratio. The amount of aqueous ethanol (10 wt.%) and acetone (10 wt.%) extracted from binary
feed solutions with compressed propane ranged from 6.4 to 14.3% and 21.8 to 90.6%, respectively, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvely, as a function of the
aqueous flowrate (0.1 to 2 ml/min) and molar solvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvent to feed ratio (S/F/1 to 10). Comparatively, ethanol extraction
with compressed CO2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluid2 ranged from 4.7 to 31.9% with similar variations in the aqueous flowrate (0.1 to 1 ml/min) and
molar solvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvent to feed ratio (3 and 10). Acetone extracted with CO2 ranged from 67.9 to 96.1% when varying the
aqueous flowrate (0.1 to 1 ml/min) at a molar solvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluidvent to feed ratio of 3. Ternary ethanol/acetone/water mixtures were
also examined to determine the effect of multi-solute aqueous solutions. The effect of aqueous and compressed fluid
flows on extraction are interpreted based on the equilibrium distributions of the solutes between water and the
compressed fluid (estimated using a group contribution association equation of state (GCA/EOS)) and the mass
transfer characteristics of the compressed fluid/EOS)) and the mass
transfer characteristics of the compressed fluid