Application of pervaporation and vapor permeation processes to separate aqueous ethanol solution through chemically modified Nylon 4 membranes
- Nanya Junior Coll. of Technology, Chung Li (Taiwan, Province of China). Dept. of Chemical Engineering
- Chung Yuan Univ., Chung Li (Taiwan, Province of China). Dept. of Chemical Engineering
The pervaporation performance of a Nylon 4 membrane, chemically grafted by N,N-dimethylaminoethyl methacrylate (DMAEM), DMAEM-g-N4, was studied by measurement of the permeation ratio and the pervaporation separation index. It was found that the water permselectivity and permeation rate for the chemically modified Nylon 4 membrane were higher than those of the unmodified Nylon 4 membrane. Optimum pervaporation results, a separation factor of 28.3, and a permeation rate of 439 g/m{sup 2}{center_dot}h, were obtained when the degree of grafting was 12.7%. It was also found that all the permeation ratios at low temperature were less than unity. In addition, compared with pervaporation, vapor permeation effectively increases the permselectivity of water.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 653407
- Journal Information:
- Separation Science and Technology, Vol. 33, Issue 11; Other Information: PBD: Aug 1998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Specialty polymeric membranes. 8: Separation of benzene from benzene/cyclohexane mixtures with nylon 6-graft-poly(butyl methacrylate) membranes
Surface-Engineered Inorganic Nanoporous Membranes for Vapor and Pervaporative Separations of Water–Ethanol Mixtures