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Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.67 [2008] >
JSIR Vol.67(03) [March 2008] >
| Title: | Dehydration of alcohols by pervaporation using hydrophilic polyether urethane membranes |
| Authors: | Das, Swatilekha
Sarkar, Suparna
Basak, Piyali
Adhikari, Basudam |
| Keywords: | Flux
Pervaporation
Polyether urethane
Separation factor |
| Issue Date: | Mar-2008 |
| Publisher: | CSIR |
| Abstract: | This study presents pervaporation separation of methanol-water (MW), ethanol-water (EW) and isopropanol-water
(IW) mixtures through a series of polyethylene glycol (PEG) based polyether urethane membranes. Five polyether urethane
(PUPEG) membranes were developed by using PEGs of increasing molecular weight (PEG₂₀₀, PEG₄₀₀, PEG₆₀₀, PEG₁₀₀₀ and
PEG₄₀₀₀). PUPEG membranes showed selectivity towards water, which increased with increasing molecular weight as well as
increasing polymer chain length of the membrane. PUPEG membrane prepared using PEG₄₀₀₀ showed highest separation
performance in dehydrating water from three alcohol-water mixtures. A pervaporation flux of 0.48 kg/m².h was achieved with
94.5% water in permeates from 20% water present in isopropanol-water mixture using PUPEG₄₀₀₀ membrane. All PUPEG
membranes showed water separation performances; flux and separation factor for water varied in the order: MW |
| Page(s): | 219-227 |
| ISSN: | 0022-4456 |
| Source: | JSIR Vol.67(03) [March 2008]
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