Chromium solution regenerator

Details Chromium solution regenerator Chromium solution regenerator

1988-08-18

1989-08-15

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204263, 204279, 204282, C25B 1508, C25B 900, C25B 1300, C25D 1700

Patent

active

048571628

ABSTRACT:
A chromium regeneration apparatus (10) is disclosed for regenerating spent chromium solution by oxidizing trivalent chromium to hexavalent chromium. The apparatus is provided with a tank (42) forming a reservoir full of spent chromium solution. A number of anode assembles (46) are supported on the tank within the reservoir with each assembly including two frame sections (70, 72) bolted together along their sides and bottom with two separate cation selective membranes (100, 102) secured therebetween. Membrane tensioners (104) are inserted between the membranes to separate them and urge them against the frame sections over openings in the frame sections to define an anode chamber. An anode and cathode are provided to a generate a current flow therebetween to regenerate the solution.

REFERENCES:
patent: 2265645 (1941-12-01), Johnson et al.
patent: 2271341 (1942-01-01), Johnson et al.
patent: 2578839 (1951-12-01), Renzoni
patent: 4287046 (1981-09-01), Ueda et al.
patent: 4302304 (1981-11-01), Ueda et al.
patent: 4337129 (1982-06-01), Soboroff et al.
patent: 4455209 (1984-06-01), Hermann
patent: 4595477 (1986-06-01), Detournay et al.

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