کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
633446 1456031 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
CFD prediction of concentration polarization phenomena in spacer-filled channels for reverse electrodialysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
CFD prediction of concentration polarization phenomena in spacer-filled channels for reverse electrodialysis
چکیده انگلیسی
Salinity Gradient Power generation through Reverse Electrodialysis (SGP-RE) is a promising technology to convert the chemical potential difference of a salinity gradient into electric energy. In SGP-RE systems, as in most membrane processes, concentration polarization phenomena may affect the theoretical driving force and thus the performance of the process. Operating conditions, including the feed solution flow rate and concentration and the channels׳ geometrical configuration, may greatly influence both the polarization effect and the pumping energy consumption. The present work uses CFD to investigate the dependence of concentration polarization and pressure drop on flow rate, feeds concentration, current density and spacer features. Concentration polarization effects were found to be significant at low feed solution concentration (river water), but only secondary at higher concentrations (seawater and brine), thus suggesting that different optimization strategies should be employed depending on the feeds concentration. The features that a spacer-filled channel should possess for high efficiency and high current density SGP-RE applications were identified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 468, 15 October 2014, Pages 133-148
نویسندگان
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