| 摘要 |
A basified aqueous salt solution and an aqueous acid are generated in a multichamber two-compartment electrodialytic water splitter having unit cells comprised of a bipolar membrane, a first anion permselective membrane and at least one additional substantially non-porous, water-swollen non-cation permselective membrane disposed between an anion face of the bipolar membrane and a face of said first anion membrane thereby forming at least two base compartments and an acid compartment, positioned between an anode and a cathode. The method comprises the steps of: (a) introducing a liquid comprising water to an acid compartment formed by a cation face of a bipolar membrane and a face of said first anion membrane; (b) introducing a liquid comprising an aqueous soluble salt to a first base compartment formed by a face of said first anion membrane and a face of said at least one additional non-cation permselective membrane; (c) serially transferring the liquid comprising the aqueous soluble salt from said first base compartment to the additional base compartment formed by a face of said at least one additional non-cation permselective membrane and an anion face of a bipolar membrane; (d) passing direct current through said water splitter thereby adding hydroxyl ions to the additional base compartment, transferring hydroxyl ions through said at least one non-cation permselective membrane from the additional base compartment to the said first base compartment, anions from the first base compartments to the acid compartment, and adding hydrogen ions to the liquid comprising water in the acid compartment; (e) withdrawing a liquid comprising aqueous acid from the acid compartment; and (f) withdrawing a basified aqueous soluble salt from the additional base compartment.
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