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- Title
Reverse osmosis and pervaporation of organic liquids using organosilica membranes: Performance analysis and predictions.
- Authors
Dong, Guanying; Zhang, Yatao; Sato, Takaaki; Nagasawa, Hiroki; Kanezashi, Masakoto; Tsuru, Toshinori
- Abstract
This study systematically investigated and modeled the organic solvent reverse osmosis (OSRO) and pervaporation (PV) performances of bis(triethoxysiyl)acetylene (BTESA)‐derived microporous organosilica membranes with different microstructures and permeation properties. BTESA membranes calcined at a low temperature of 100°C exhibited great promise for utility in the challenging OSRO separation of methanol/organic azeotropes such as methanol/toluene and methanol/methyl tert‐butyl ether and demonstrated ultrahigh values for both permeating flux and rejection together with good operation stability. In addition, a generalized solution‐diffusion model enabled a suitable description of the permeation behaviors of organic solvent molecules through the BTESA membranes irrespective of the use of either OSRO or PV modalities, which allowed us to predict the OSRO performance via PV, and vice versa.
- Subjects
PERVAPORATION; REVERSE osmosis; BUTYL methyl ether; ORGANIC solvents; ACETYLENE; AZEOTROPES
- Publication
AIChE Journal, 2022, Vol 68, Issue 4, p1
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.17585