Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Water – sewage – or other waste water
Patent
1998-07-14
2000-11-07
Phasge, Arun S.
Electrolysis: processes, compositions used therein, and methods
Electrolytic material treatment
Water, sewage, or other waste water
205746, 2042298, 2042302, 204263, C02F 1461
Patent
active
06143163&
ABSTRACT:
A method of water electrolysis for producing acidic water and alkaline water is disclosed, which is effective in preventing the dissolution of electrode material in the acidic water, etc. attributable to a reverse current flowing in a power supply cutoff state and also in preventing electrode deactivation caused by the electrode material dissolution. This enables the electrolytic cell to be operated stably over a long period of time to yield high-purity acidic and alkaline waters. An electrolytic cell 1 partitioned into an anode chamber and a cathode chamber with a cation-exchange membrane 2 as a solid electrolyte is used to electrolytically produce acidic water and alkaline water. A voltage of 1.2 V or higher and/or a current of 20 mA/dm.sup.2 or higher is applied between the anode 7 and the cathode 8 when the electrolytic cell is in a power supply cutoff state.
Hayamizu Naoya
Nishiki Yoshinori
Sakurai Naoaki
Sawamoto Isao
Tanaka Masashi
Kabushiki Kaisha Toshiba
Permelec Electrode Ltd.
Phasge Arun S,.
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