Method and apparatus for wet treatment of solid surfaces

Details Method and apparatus for wet treatment of solid surfaces Method and apparatus for wet treatment of solid surfaces

1995-07-12

1996-11-26

Phasge, Arun S.

Electrolysis: processes, compositions used therein, and methods

Electrolytic material treatment

Water, sewage, or other waste water

205747, 205751, 204263, 20415715, 134902, 437936, C02F 1461

Patent

active

055781934

ABSTRACT:
The object of the invention is to accomplish surface treatment such as cleaning, etching or after-treatment of parts or semi-processed articles for the manufacture of industrial or medical products without raising the problem of environmental pollution and without damaging or contaminating the treated articles. Water is electrolyzed in a tank which is partitioned by a porous membrane into an anode chamber and a cathode chamber to prepare a fresh anodic water containing H.sup.+ ion in the anode chamber and a fresh cathodic water containing OH.sup.- ion in the cathode chamber. The fresh anodic water and the fresh cathodic water are separately discharged from the electrolysis tank, and selected one of the anodic water and the cathodic water is brought into contact with the object of wet treatment. The efficiency of electrolysis of water can be enhanced by adding a small amount of an electrolysis aid such as carbon dioxide gas or ammonium acetate to water and/or by irradiating water under electrolysis with an electromagnetic wave having an wavelength not longer than 400 nm or not shorter than 3000 nm.

REFERENCES:
patent: 4857158 (1989-08-01), Cawlfield
patent: 5175124 (1992-12-01), Weinbarger
patent: 5234563 (1993-08-01), Arai et al.
patent: 5268092 (1993-12-01), Eden
Abstract of JP-A-4-314 408 No month & year available.
Abstract of JP-A-5 057 282 No month & year available.
Abstract of JP-A-4 193 235 No month & year available.
Abstract of JP-A-4 076 127 No month & year available.
Abstract of JP-A-4 074 587 No month & year available.
Abstract of JP-A-1 130 781 No month & year available.
Abstract of JP-A-61 268 391 No month & year available.

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