کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
624040 1455379 2013 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pressure retarded osmosis efficiency for different hollow fibre membrane module flow configurations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Pressure retarded osmosis efficiency for different hollow fibre membrane module flow configurations
چکیده انگلیسی

The principle of pressure retarded osmosis is to utilize parts of the free energy of mixing of solutions with different salinities for production of mechanical energy. The mixing process takes place over a semi-permeable membrane as water is transported from the less concentrated salt solution to the more concentrated salt solution due to difference in chemical potential of water. The PRO process will be operated with elevated pressure on the side of the membrane having the highest salt concentration, corresponding to approximately half the difference in osmotic pressures for the two solutions. The net increase in volume on the pressurised side can be utilized to run a turbine.This paper has focused on modelling the power production and pressure drop in hollow fibre modules with different flow configurations, i.e. co-current and counter current longitudinal flows and elements with longitudinal flow inside the fibres and radial flow in the shell.The overall PRO performance is similar for the different flow configurations. The radial flow configuration has a superior pressure drop in the shell side compared to the longitudinal flow configurations, but the total membrane area for a given element size will be larger for the longitudinal flow configurations.


► Developed models for different hollow fibre element configurations used for PRO
► Demonstrated the effect of the membrane parameters on the element PRO performance
► Demonstrated the effect of the fibre diameter and intermediate distance
► Demonstrated the effect of two process variables on the PRO performance
► Made an overall comparison and discussion of hollow fibre element configuration

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 312, 1 March 2013, Pages 107–123
نویسندگان
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