کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7008220 1455298 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scale-up of MFI zeolite membranes for desalination by vacuum membrane distillation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Scale-up of MFI zeolite membranes for desalination by vacuum membrane distillation
چکیده انگلیسی
In this work, supported zeolite membranes having Mordenite Framework Inverted (MFI) topology were scaled-up and membranes 30 cm long were prepared using the secondary growth method coupled with the cross flow seeding procedure. In particular, the influence of rotation time during the seeding procedure was evaluated. The prepared membranes were characterized by scanning electron microscope (SEM), X-ray diffractometry (XRD), Energy Dispersive X-ray (EDX) analysis and single gas permeation, and then underwent to Vacuum Membrane Distillation (VMD) tests using both deionized water and NaCl solutions at different concentrations. The experimental work allowed to identify the membrane able to provide interesting trans-membrane flux and salt rejection values. Specifically, permeate fluxes of 13.8kg m− 2 h− 1 and 8.2 kg m− 2 h− 1, together with rejections of 99.8% and 99.6%, were achieved for the 0.2 M and 0.9 M feeds, respectively. No changes in the membrane structure after the exposure to salty solutions were detected by SEM and XRD analyses and its original performance was restored by means of an identified cleaning procedure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 397, 1 November 2016, Pages 205-212
نویسندگان
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