| 摘要 |
IN ONE EMBODIMENT, THE PRESENT INVENTION RELATES TO A PROCESS FOR RECOVERING AN ONIUM HYDROXIDE FROM A SOLUTION CONTAINING AN ONIUM COMPOUND, INCLUDING CONTACTING THE SOLUTION WITH A CATION EXCHANGE MATERIAL SO THAT AT LEAST A PORTION OF ONIUM CATIONS FROM THE ONIUM COMPOUND ARE ADSORBED BY THE CATION EXCHANGE MATERIAL; CONTACTING AN ACID WITH THE CATION EXCHANGE MATERIAL TO ELUTE AN ONIUM SALT; CHARGING THE ONIUM SALT TO AN ELECTROCHEMICAL CELL (40) CONTAINING AT LEAST THREE COMPARTMENTS (45, 46, 47), A CATHODE (42), AN ANODE (41), AND IN ORDER FROM THE ANODE TO THE CATHODE, A BIPOLAR MEMBRANE (43)AND A CATION SELECTIVE MEMBRANE (44), AND PASSING A CURRENT THROUGH THE CELL WHEREBY THE ONIUM HYDROXIDE IS REGENERATED; AND RECOVERING THE ONIUM HYDROXIDE FROM THE CELL (40). IN ANOTHER EMBODIMENT, THE PRESENT INVENTION RELATES TO A PROCESS FOR RECOVERING AN ONIUM HYDROXIDE FORM A SOLUTION CONTAINING AN ONIUM COMPOUND, INCLUDING CONTACTING THE SOLUTION WITH A CATION EXCHANGE MATERIAL SO THAT AT LEAST A PORTION OF ONIUM CATIONS FROM THE ONIUM COMPOUND ARE ADSORBED BY THE CATION EXCHANGE MATERIAL; CONTACTING AN ACID WITH THE CATION EXCHANGE MATERIAL TO ELUTE AN ONIUM SALT TO AN ELECTROCHEMICAL CELL (10) CONTAINING AT LEAST TWO COMPARTMENTS, A CATHODE (12), AN ANODE (11), AND AN ANION SELECTIVE MEMBRANE (13) THEREBETWEEN, AND PASSING A CURRENT THROUGH THE CELL WHEREBY THE ONIUM HYDROXIDE IS REGENERATED; AND RECOVERING THE ONIUM HYDROXIDE FROM THE CELL (10).
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