CHLORINE ENGINEERS Corporation | Date: 2012-02-27
Provided are: a method of measuring the total concentration of oxidizing agents, by which the total concentration can be determined in a single measurement with simple operations even in an evaluation solution containing multiple components such as persulfuric acid, perosulfate and hydrogen peroxide; a simple and inexpensive concentration meter for measuring the total concentration of oxidizing agents; and a sulfuric acid electrolysis device comprising the concentration meter. The method according to the present invention is a method of measuring the total concentration of oxidizing agent(s) in an evaluation solution containing at least one oxidizing agent. The method comprises at least the steps of: heat-treating the evaluation solution at 50 to 135 C.; and detecting hydrogen peroxide in the thus heat-treated evaluation solution.
CHLORINE ENGINEERS Corporation | Date: 2010-11-26
The present invention provides an ozone generator comprising an anode and a cathode provided on each side of a fluororesin type cation exchange membrane, the anode being a conductive diamond electrode having conductive diamond on the surface, wherein water is supplied to an anode compartment, DC current is supplied between the anode and the cathode to electrolyze water to evolve ozone from the anode compartment and hydrogen from a cathode compartment, the conductive diamond electrode comprising a substrate having a plurality of convexo-concave and a conductive diamond film coated on the surface of the substrate is applied as the conductive diamond electrode, and a close packed layer of ion exchange resin particles or the fluororesin type cation exchange membrane with notch is closely adhered to the surface of the anode side of the fluororesin type cation exchange membrane.
Kabushiki Kaisha Toshiba, Shibaura Mechatronics Corporation and CHLORINE ENGINEERS Corporation LTD. | Date: 2010-12-08
In one embodiment, an etching method is disclosed. The method can include producing an oxidizing substance by electrolyzing a sulfuric acid solution, and producing an etching solution having a prescribed oxidizing species concentration by controlling a produced amount of the produced oxidizing substance. The method can include supplying the produced etching solution to a surface of a workpiece.
CHLORINE ENGINEERS Corporation | Date: 2013-05-30
Provided are an elastic cushion member and an ion exchange membrane electrolyzer using the same, which elastic cushion member can be installed even in an ion exchange membrane electrolyzer having such a small gap between an electrode and an electrode current collecting plate that a conventional elastic cushion member cannot be arranged therein. An elastic cushion member (
CHLORINE ENGINEERS Corporation | Date: 2011-11-21
The present invention provides an electrically conductive diamond electrode comprising an electrically conductive substrate and an electrically conductive diamond layer coated on the surface of the electrically conductive substrate, featuring that: The present invention intends to provide an electrically conductive diamond electrode with a high durability as electrode, which achieves a high current efficiency of oxidizing agent at a low cell voltage by controlling the thickness of the electrically conductive diamond layer and crystallinity of the electrically conductive diamond, a sulfuric acid electrolysis method and an electrolysis apparatus of sulfuric acid applying the electrically conductive diamond electrode.