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Optimization and modeling of the performance of polydimethylsiloxane for pervaporation of ethanol−water mixture
Author(s) -
Zentou Hamid,
Abidin Zurina Zainal,
Yunus Robiah,
Biak Dayang Radiah Awang,
Issa Mohammed Abdullah
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50408
Subject(s) - polydimethylsiloxane , pervaporation , permeation , ethanol , response surface methodology , selectivity , volumetric flow rate , membrane , chemistry , chromatography , aqueous solution , analytical chemistry (journal) , materials science , chemical engineering , organic chemistry , biochemistry , thermodynamics , physics , engineering , catalysis
Response surface methodology was used to optimize the performance of pervaporation of ethanol aqueous solution using polydimethylsiloxane hollow‐fiber membrane. The effects of four operating conditions, that is, the feed temperature (30–50°C), the feed flow rate (10–50 L/h), ethanol concentration (5–20 wt%), and the vacuum pressure (10–50 KPa) on the membrane selectivity and the total flux of permeation were investigated with response surface methodology. The results showed that a quadratic model was suggested for both selectivity and total flux showing a high accuracy with R 2 = 0.9999 and 0.9995, respectively. The developed models indicated a significant effect of the four studied factors on both selectivity and total flux with some significant interactions between these factors. The optimum selectivity was 15.56, achieved for a feed temperature of 30°C, feed flow rate of 10 L/h, ethanol concentration of 15 wt%, and a permeate pressure of 10.74 KPa whereas the optimum total flux was 1833.66 g/m 2 .h was observed for at a feed temperature of 50°C, a feed flow rate of 50 L/h, ethanol concentration of 15 wt%, and a permeate pressure of 49.38 KPa.