-
- TAKAHASHI Hiroshi
- Graduate School of Engineering and Science, Akita University
-
- HIGASHI Tomohiro
- Graduate School of Engineering and Science, Akita University
-
- SUGAWARA Yuya
- Graduate School of Engineering and Science, Akita University
-
- KASHIUCHI Etsuko
- Graduate School of Engineering and Science, Akita University
Bibliographic Information
- Other Title
-
- 酸性側pHステップを有するバイポーラー膜電気透析の開発
- サンセイガワ pH ステップ オ ユウスル バイポーラーマク デンキ トウセキ ノ カイハツ
Search this article
Abstract
We have developed a new technique of electrodialysis with a bipolar membrane and ion-exchange membranes. The technique has a separating zone with acidic pH steps between compartments. The electrodialyzer was composed of six compartments, which were divided by an anion-exchange membrane, a bipolar membrane, and three cation-exchange membranes. The solutions including sodium chloride were circulated by chemical pumps through the compartments and reservoirs at constant flow rate. When a voltage was applied to the electrodialyzer, hydrogen ions were electrically generated by the bipolar membrane, and partially moved to cathode-side compartments through cation-exchange membranes. The hydrogen concentration in each compartment was almost equal to the concentration of coexisting anions, and formed acidic-pH steps in the electrodialyzer. All the experimental data were simulated by a mathematical model which considered ionic flux in the membrane based on the Nernst-Planck’s equation, ion-exchange equilibrium between solution and membrane, electroneutrality in the solution, hydrogen production rate, and material balances of ionic species. The model well explained the experimental results of formation of pH steps in the electrodialyzer.
Journal
-
- Bulletin of the Society of Sea Water Science, Japan
-
Bulletin of the Society of Sea Water Science, Japan 70 (5), 317-323, 2016
The Society of Sea Water Science, Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679573978368
-
- NII Article ID
- 130006101545
-
- NII Book ID
- AN0018645X
-
- ISSN
- 21859213
- 03694550
-
- NDL BIB ID
- 027676614
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed