Evaluation of recovery characteristic of acidic and alkaline solutions from NaNO3 using conventional electrodialysis and electrodialysis with bipolar membranes

We compared the electrodialysis performance for HNO 3 and NaOH recovery from NaNO 3 solution by conventional electrodialysis (ED) and electrodialysis with bipolar membranes (EDBM) at constant current and constant voltage. The individual resistances of the components of the electrodialysis systems we...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2013, 30(9), 162, pp.1760-1769
Main Authors: Kim, Kwang-Wook, Hyun, Jun-Taek, Lee, Keun-Young, Lee, Eil-Hee, Chung, Dong-Young, Moon, Jei-Kwon
Format: Article
Language:English
Subjects:
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Environmental Engineering
Industrial Chemistry/Chemical Engineering
Materials Science
화학공학
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Summary:We compared the electrodialysis performance for HNO 3 and NaOH recovery from NaNO 3 solution by conventional electrodialysis (ED) and electrodialysis with bipolar membranes (EDBM) at constant current and constant voltage. The individual resistances of the components of the electrodialysis systems were also evaluated. The electrodialysis extent for HNO 3 and NaOH recovery from NaNO 3 solution was almost proportional to the total amount of electricity supplied to the system, regardless of the operation mode and the electrodialysis systems. For the same volume of feed solution, the energy consumption and current efficiency differed depending on the operation mode and the electrodialysis system. In both the ED and EDBM systems, the conductivity of the feed solution strongly affected the overall cell resistance after approximately 50% of the ions in the feed solution had migrated.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-013-0089-5