Permelec Electrode Ltd.

Yoshiyuki Kawaguchi

Takayuki Shimamune

Yasuo Nakajima

Yoshinori Nishiki

Masaharu Uno

Shuhei Wakita

Takahiro Ashida

Masaaki Katoh

An electrolytic cell for producing a brine containing hydrogen peroxide is disclosed. Units for hydrogen peroxide production 3 and units for water electrolysis 2 are alternately arranged in the same electrolytic cell 1. Electrolysis is conducted while supplying hydrogen gas and oxygen gas generating in the respective water electrolysis units to a gas diffusion anode 11 and a gas diffusion cathode 13 of each unit for hydrogen peroxide production, to thereby obtain a brine containing hydrogen peroxide in a high concentration. Furthermore, because the anode of the hydrogen peroxide production units is a hydrogen gas diffusion anode having a reduced oxidizing ability, halogen ions contained in the seawater do not yield harmful halogenated organic substances.

Electrolytic cell for hydrogen peroxide production

A seawater electrolysis apparatus for generating hydrogen peroxide from seawater by electrolysis to thereby treat the seawater. The seawater electrolysis apparatus comprises an electrolytic cell, a gas diffusion electrode partitioning the electrolytic cell into a gas chamber and an electrolysis chamber, an insoluble metal electrode disposed in the electrolysis chamber as an anode, an inlet and an outlet for passing seawater through the electrolysis chamber, an inlet for supplying an oxygen-containing gas to the gas chamber, and means for passing and diffusing at least part of the gas supplied to the gas chamber passing through the gas diffusion electrode and into the seawater, respectively.

Seawater electrolysis apparatus

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Kanagawa, Japan

Yoshiyuki Kawaguchi