| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 624538 | Desalination | 2012 | 5 Pages |
Increasing in situ extraction of oil sands bitumen has made the recovery of contaminated process water a more important, and more pressing, challenge. We have machined thin membranes that have a high zeolite content, offer high thermal and chemical stability, and are essentially free of intercrystalline voids. The membranes were produced from natural zeolites from a high-density deposit in British Columbia. These membranes were found to be able to greatly reduce ionic content and almost completely remove all toluene from synthetic process water at 85 °C and 1 atm feed-side pressure under pervaporative operation. Membrane flux was insensitive to toluene over the concentration range tested (10–220 mg/L) but decreased with increasing ionic content. This initial study shows promise as a once-through membrane process that can withstand high temperature and organic contamination.
► Rugged, economical, natural zeolite membrane for purifying process water. ► High flux with efficient ion and organic rejection for synthetic process water. ► Strong chemical stability in an organic-rich, saline environment, suggests great industrial potential.
