Performance characterization of nanofiltration, reverse osmosis, and ion exchange technologies for acetic acid separation
Journal Article
·
· Separation and Purification Technology
- Argonne National Lab. (ANL), Lemont, IL (United States); Texas A & M Univ., College Station, TX (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Texas A & M Univ., College Station, TX (United States)
A major obstacle to widespread implementation of bio-based fuels and chemicals is the lack of efficient and costeffective separation methods. To purify acetic acid produced by biochemical conversion of biomass via anaerobic digestion, this work employs two commonly used separation technologies: (1) ion-exchange (IX) resin and (2) pressure-driven membranes. This study tested five commercially available strong- and weak-base anion-exchange resins and five commercially available nanofiltration (NF) and reverse osmosis (RO) membranes. The pH of the feed solution significantly affected adsorption capacity. At pH 6.3, a strong-base IX resin (IRN-78) performed best (95.1% acetate removal). With strong-base IX resins, the Langmuir isotherm model fit well, whereas for weak-base IX resins, the Freundlich isotherm provided a better fit. A pseudo-second-order kinetic model fit well for both IRN-78 and IRA-67. Regarding membrane separation, RO (BW30XFR membrane) achieved the highest rejection (98.6% acetate rejection), whereas an NF membrane (NF*) achieved the best combination of permeate flux (105 L/(h∙m2)) and rejection (83.1% acetate rejection). For membrane performance, the experimental data were fit using the solution diffusion model. Increased pH in the feed solution lowered permeate flux but increased acetic acid rejection. Finally, then the acetic acid concentration in the feed solution increased, both permeate flux and acetic acid rejection decreased for membrane NF*.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1798306
- Alternate ID(s):
- OSTI ID: 1809753
- Journal Information:
- Separation and Purification Technology, Journal Name: Separation and Purification Technology Vol. 265; ISSN 1383-5866
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Application of electrodialysis pretreatment to enhance boron removal and reduce fouling during desalination by nanofiltration/reverse osmosis
Peptide and amino acid separation with nanofiltration membranes
An analytical solution of the solution-diffusion-electromigration equations reproduces trends in ion rejections during nanofiltration of mixed electrolytes
Journal Article
·
Mon Jun 29 20:00:00 EDT 2020
· Desalination
·
OSTI ID:1852965
Peptide and amino acid separation with nanofiltration membranes
Journal Article
·
Sun May 01 00:00:00 EDT 1994
· Separation Science and Technology; (United States)
·
OSTI ID:7102367
An analytical solution of the solution-diffusion-electromigration equations reproduces trends in ion rejections during nanofiltration of mixed electrolytes
Journal Article
·
Tue Sep 27 20:00:00 EDT 2016
· Journal of Membrane Science
·
OSTI ID:1534096