Synthesis, Characterization And Performance Of Zeolite A Membrane For The Recovery Of Alcohol From Alcohol-Water Mixture Using Pervaporation Process
| dc.contributor.author | Wee, Shin Ling | |
| dc.date.accessioned | 2016-11-24T00:49:51Z | |
| dc.date.available | 2016-11-24T00:49:51Z | |
| dc.date.issued | 2010-06 | |
| dc.description.abstract | The separation performance of the commercial ceramic membrane and selfsynthesized zeolite A membrane was studied for the recovery of alcohol from alcohol-water mixture using pervaporation method. Zeolite A membrane was synthesized on a-alumina tubular and disc-shaped supports using the microwave synthesis method. The seeding effect on the membrane synthesis was investigated. The synthesized zeolite membranes were characterized by XRD (structure), SEM (membrane thickness) and TGA (thermal stability). Pervaporation experiments at different operating conditions were conducted to evaluate the membrane separation performance. The results showed that the performance for the membrane synthesized with seeding was much better than those synthesized without seeding. Commercial ceramic membrane supplied by Pervatech BV was used in the pervaporation process studies on isopropanol and ethanol aqueous solutions. The effects of feed temperature, feed concentration, permeate pressure and feed flow rate on the membrane separation performance were studied using design of experiments (DOE) coupled with response surface methodology (RSM). The center composite design (CCD) was used to obtain optimum process condition. The results showed that in order to obtain an acceptable permeation flux of 2.41 kglm2.h and optimum selectivity of 1131, the temperature, isopropanol feed concentration, permeate pressure and feed flow rate were 75°C, 94 wt%, 1 kPa and 84 dm3/h respectively. The optimum permeation flux of 9.16 kg/m2.h was obtained at temperature of 90°C, isopropanol feed concentration of 81 wt%, permeate pressure of 1 kPa and feed flow rate of 100 dm3/h respectively. The optimum selectivity of 1415 was obtained at the temperature of 69°C, isopropanol feed concentration of 96 wt%, permeate pressure of 1 kPa and feed flow rate of 41.05 dm3/h respectively. A basic pervaporation transport model was employed to determine the separation parameters for the pervaporation process from the experimental data. The water flux was predicted from the model using the separation parameters. The simulated flux data were in agreement with the experimental flux data within an error of ± 10%. The activation energy for water and isopropanol permeation flux determined from Arrhenius type relation was 44.1-47.2 kllmol and 66.5-84.0 kJ/mol respectively. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/3170 | |
| dc.subject | The separation performance of the commercial ceramic membrane and selfsynthesized zeolite | en_US |
| dc.subject | recovery of alcohol from alcohol-water mixture using pervaporation method. | en_US |
| dc.title | Synthesis, Characterization And Performance Of Zeolite A Membrane For The Recovery Of Alcohol From Alcohol-Water Mixture Using Pervaporation Process | en_US |
| dc.type | Thesis | en_US |
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