To provide a method for electrodialysis in order to fractionate and recover a plurality of kinds of acids from acid-saccharified liquid, and an apparatus for the electrodialysis, used for such the method for the electrodialysis.
By using the apparatus for the electrodialysis, the plurality of kinds of the acids are fractionated and recovered from the acid-saccharified liquid of cellulose-based biomass. At the apparatus for the electrodialysis, a desalination chamber and a concentration chamber are installed, and the concentration chamber is divided into a first concentration chamber at a cathode side and a second concentration chamber in an anode side by an anion exchange membrane. At the desalination chamber, a desalinated saccharified liquid recovery pathway is connected, and at the first concentration chamber, a first acid recovery pathway for recovering the acid having a low permeation rate toward the anion exchanging membrane among the acids contained in the saccharified liquid in the desalination chamber is connected, and at the second concentration chamber, a second acid recovery pathway for recovering the acid having a high permeation rate toward the anion exchanging membrane is connected.
IZUMI NORIAKI
KONISHI SATOSHI
IKEDA MICHIHARU
| JPH07213870A | 1995-08-15 | |||
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| JPH0871387A | 1996-03-19 |
| WO1993005186A1 | 1993-03-18 |
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