Effect of deacetylation degree in chitosan composite membranes on pervaporation performance

Journal Article · Mon Jun 01 00:00:00 EDT 1998 · Separation Science and Technology

DOI:https://doi.org/10.1080/01496399808544982· OSTI ID:634707

Lee, Y M; Park, H B; Nam, S Y ^[1]; Won, J M; Kim, H ^[2]

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1. Hanyang Univ., Seoul (Korea, Republic of)
2. Research and Development Management Center for Energy, Seoul (Korea, Republic of)

The effect of the degree of deacetylation in chitosan composite membranes on their pervaporation performance for ethanol dehydration was investigated. The degree of deacetylation of chitosans was measured by using an infrared spectroscopic method and elemental analysis. The chitosan composite membranes were prepared by coating a chitosan solution onto a microporous polyethersulfone membrane with 3--7 nm pore sizes. Then the surface of the top layer (chitosan) of well-dried membranes was crosslinked with sulfuric acid, and pervaporation experiments for binary mixtures (water-ethanol) were carried out at various conditions. In the case of a chitosan membrane with a high degree of deacetylation, the flux increases while the separation factor decreases compared with membranes with a low degree of deacetylation.

• OSTI ID: 634707
• Journal Information: Separation Science and Technology, Vol. 33, Issue 9; Other Information: PBD: Jun 1998
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
10 SYNTHETIC FUELS
CHITIN
MEMBRANES
PERFORMANCE
ETHANOL
DEHYDRATION
MEMBRANE TRANSPORT
DECOMPOSITION
ACETYLATION