کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
642313 1457031 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selectrodialysis: Fractionation of divalent ions from monovalent ions in a novel electrodialysis stack
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Selectrodialysis: Fractionation of divalent ions from monovalent ions in a novel electrodialysis stack
چکیده انگلیسی

In view of wastewater recycling and industrial requirements to valorize nutrients and other valuable ions from waste streams, as well as to refine the product streams, a novel electrodialysis stack, denoted as selectrodialysis, was designed and used for ion fractionation.In this work, separation of sulphate from a NaCl/Na2SO4 mixture is investigated. Prior to the investigation, the selectrodialysis stack was qualitatively tested on a synthetic wastewater to study the potential of ion fractionation by using this novel configuration. Different approaches including changing of pH and current density were used to evaluate the effects on the stack selectivity, the current efficiency and the product (sulphate) purity. Furthermore, the optimized parameters were applied to produce a sulphate-enriched stream from sulphate-free solutions (NaCl solution) in the product stream.The results show that the sulphate purity can reach over 85% with the current efficiency of over 50%. It is proved that selectrodialysis is feasible and effective for chloride/sulphate fractionation.


► A novel electrodialysis stack (selectrodialysis) was used to fractionate anions.
► pH and current density effects were investigated in view of the stack performance.
► Production of a sulphate-enriched stream from NaCl solutions was achieved.
► The sulphate purity can reach over 85% with the current efficiency of over 50%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 88, 22 March 2012, Pages 191–201
نویسندگان
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