کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
632362 1455987 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water
ترجمه فارسی عنوان
اثر پارامترهای عملکرد و ویژگی های غشایی بر عملکرد اسپری غشایی هوا در درمان آب بسیار شور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
In this study, ten different commercially available PTFE, PP and PVDF membranes were tested in desalination of highly saline water by air gap membrane distillation (AGMD). Process performance was investigated under different operating parameters, such as feed temperatures, feed flow velocities and salt concentrations reaching 120 g/L, and different membrane characteristics, such as membrane material, thickness, pore size and support layer, using a locally designed and fabricated AGMD module and spacer. Results showed that increasing feed temperature increases permeate flux regardless of the feed concentration. However, feed flow velocity does not significantly affect the flux, especially at low feed temperatures. The PP membrane showed a better performance than the PVDF and PTFE membranes. Permeate flux decreases with the increase of salt concentration of feed solution, especially at higher concentrations above 90 g/L. The existence of membrane support layer led to a slight decrease of permeate flux. Membranes with pore sizes of 0.2 and 0.45 µm gave the best performance. Smaller pore size led to lower flux and larger pore size led to pore wetting due to lower LEP values. The effect of concentration polarization and temperature polarization has also been studied and compared.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 512, 15 August 2016, Pages 73-82
نویسندگان
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