TY - JOUR
T1 - The Effect of Process Parameters on the Pervaporation of Alcohols through Organophilic Membranes
AU - Hickey, P. J.
AU - Juricic, F. P.
AU - Slatert, C. S.
N1 - Funding Information:
The authors of this paper would like to acknowledge the Exxon Education Foundation and UOP, Inc. for support of the research and education projects in membrane technology at Manhattan College.
PY - 1992/6/1
Y1 - 1992/6/1
N2 - Several organophilic membranes were utilized to selectively permeate ethanol, n-butanol, and t-butanol from dilute aqueous mixtures using pervaporation (PV). Poly[l-(trimethylsilyl)-l-propyne] (PTMSP) membranes were utilized to investigate the effect of temperature, pressure, and start-up/transient time on the separation of aqueous ethanol mixtures. Results indicate optimal ethanol selectivity and flux at the lowest permeate-side pressure. Increased temperature significantly enhanced the productivity of PTMSP, but extended operation of the PTMSP membranes at high temperatures resulted in flux degradation. Two other hydrophobic membranes, poly(dimethyl siloxane) (PDMS) and a poly(methoxy siloxane) (PMS) composite, were used to separate n-butanol and t-butanol from dilute aqueous mixtures. The effect of feed concentration on the flux and selectivity was investigated. Both membranes were found to be more permeable to n-butanol than t-butanol. The PDMS membrane was found to be more effective than the PMS membrane in terms of flux and selectivity. The effect of membrane thickness on water permeation and on organic selectivity was also studieu using the PDMS membrane.
AB - Several organophilic membranes were utilized to selectively permeate ethanol, n-butanol, and t-butanol from dilute aqueous mixtures using pervaporation (PV). Poly[l-(trimethylsilyl)-l-propyne] (PTMSP) membranes were utilized to investigate the effect of temperature, pressure, and start-up/transient time on the separation of aqueous ethanol mixtures. Results indicate optimal ethanol selectivity and flux at the lowest permeate-side pressure. Increased temperature significantly enhanced the productivity of PTMSP, but extended operation of the PTMSP membranes at high temperatures resulted in flux degradation. Two other hydrophobic membranes, poly(dimethyl siloxane) (PDMS) and a poly(methoxy siloxane) (PMS) composite, were used to separate n-butanol and t-butanol from dilute aqueous mixtures. The effect of feed concentration on the flux and selectivity was investigated. Both membranes were found to be more permeable to n-butanol than t-butanol. The PDMS membrane was found to be more effective than the PMS membrane in terms of flux and selectivity. The effect of membrane thickness on water permeation and on organic selectivity was also studieu using the PDMS membrane.
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U2 - 10.1080/01496399208019729
DO - 10.1080/01496399208019729
M3 - Article
AN - SCOPUS:0026883792
SN - 0149-6395
VL - 27
SP - 843
EP - 861
JO - Separation Science and Technology
JF - Separation Science and Technology
IS - 7
ER -