کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4763610 1422969 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pervaporative removal of organosulfur compounds (OSCs) from gasoline using PEBA and PDMS based commercial hydrophobic membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Pervaporative removal of organosulfur compounds (OSCs) from gasoline using PEBA and PDMS based commercial hydrophobic membranes
چکیده انگلیسی
Vacuum pervaporation experiments were conducted to recognize the efficiency of organosulfur compounds (OSCs) separation from gasoline using commercial hydrophobic membranes. Three of typically presented in gasoline sulfur species, i.e. thiophene, 2-methylthiophene and 2,5-dimethylthiophene, were selected to investigate the different sulfur compounds removal efficiency from n-octane/sulfur species used as a model gasoline. The influence of process parameters such as feed temperature, feed concentration on OSCs removal from model n-octane/sulfur compound mixtures was also examined. During the test, the commercial hydrophobic PEBA-based and PDMS-based composite membranes were applied. Conducted experiments with chosen sulfur species confirmed that the structure of a component and the resulting differences in the affinity toward tested membrane and physico-chemical properties can influence the membrane performance and led to different separation efficiency. Total fluxes for n-octane/thiophene, n-octane/2-methylthiophene and octane/2,5-dimethylhiophene mixtures at 30 °C were equal to be 1.33, 1.42 and 1.29 kg/m2 h in case of PEBA membrane and 7.21, 7.48 and 7.34 kg/m2 h for PDMS-base membrane, with the corresponding separation factor β values of 7.04, 3.95 and 1.25 for PEBA and 2.95, 1.56 and 1.01 for PDMS, respectively. The intrinsic selectivity for tiophene/n-octane mixture (αT/O) also indicated that PEBA membrane (αT/O ≈ 18) is much more selective than PDMS one (αT/O ≈ 7.5).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 309, 1 February 2017, Pages 435-444
نویسندگان
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