نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه صنعتی سهند تبریز، دانشکده مهندسی شیمی، مرکز تحقیقات مواد نانوساختار
2 دانشکده مهندسی شیمی، مرکز تحقیقات کربن سبز، دانشگاه صنعتى سهند تبریز
3 دانشگاه صنعتی سهند
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The aim of this research is creating a mesoporous structure in the MFI zeolite membrane layer and increase the pores diameter in order to increase the water permeability. The mesoporous structure was created by adding carbon black to the synthesis solution of the membrane in the in-situ hydrothermal method. The X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Berner-Emmett-Taylor (BET) and nitrogen gas permeability tests were used to characterize and the water permeation test was used to investigate the performance. The results showed the successful synthesis of the MFI zeolite membrane layer with proper crystallinity on the α-alumina support with the thickness of about 15 µm and the pore size between 4.5-20 nm, so that the largest amount of meso-pores had a diameter of 7.4 nm. The diameter of the pores has increased by 10 times compared to the synthesis without the presence of carbon black. The results of the water permeation test showed that increasing the the pores diameter using carbon black could increase the water flux of the membrane (26 L/m2.h) up to 14-75 times compared to microporous membranes (0.35-1.74 L/m2.h). Investigating the water flux of the membrane for water containing dissolved solids showed that the water flux of the mesoporous membrane (12 L/m2.h) is still higher than the microporous membranes after 2 h.
کلیدواژه‌ها [English]
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