کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
643991 884404 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of weak acid production by the EDB method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Modeling of weak acid production by the EDB method
چکیده انگلیسی

The electrodialysis with bipolar membrane (EDB) of organic acid salts is an alternative way of the production of organic acids. In this work a model of the basic EDB cell consisting of three compartments (acid, salt, base) is presented. The transport of ions through monopolar ion-exchange membranes is described by the extended Nernst–Planck equation, assuming the Donnan equilibrium at the boundary solution|membrane. The diffusion of undissociated acid and the electro-osmotic flow of water is taken into account. The model predicts how the efficiency of salt conversion, the resistance of cell, the volumes of acid, salt, and base solutions change with time for a given current density. The simulation results are presented for the acetic acid. The influence of nonideality of membranes and of the acid dissociation constant on the efficiency of acid production is shown.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 57, Issue 3, 15 November 2007, Pages 406–412
نویسندگان
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