کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
624995 | 1455413 | 2011 | 5 صفحه PDF | دانلود رایگان |
Zeolite hydroxysodalite (HS) was synthesized successfully by hydrothermal method using the natural kaolin. In the first step, kaolin has been calcined at 700 °C to the metakaolinite phase. As a second step, the zeolitisation experiments have been carried out under hydrothermal conditions. The metakaolinite obtained has been reacted with NaOH solutions in autoclaves at 100 °C. The crystal species were characterized by X-ray diffraction (XRD) patterns and morphology of the supports subjected to crystallization was characterized by Scanning electron microscopy (SEM). Performance of the hydrophilic Nano zeolite membranes during separation of water/Ethanol mixtures was evaluated. These membranes showed very high selectivity of water for water/Ethanol mixtures. Separation factor as high as 10,000 was obtained for ethanol feed concentration of 90%. Total mass flux was also obtained 0.959 kg/m2.h.
► Zeolite Synthesis by chemical source.
► Zeolite Synthesis by Kaolin source.
► Comparison of zeolites synthesis by kaolin and chemical source.
► PV comparison of membranes.
Journal: Desalination - Volume 278, Issues 1–3, 1 September 2011, Pages 438–442