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Chromic acid solutions regeneration

Chromic acid solutions can also be produced from acid chromium(III) solutions anodically (regeneration of chromium(III) solutions obtained from chromic acid solutions employed in oxidation processes). [Pg.309]

H SO CrC (usually around 1 100) and an organic acid is used as catholyte, the small amounts of organic anion which do migrate across the membrane are oxidized by the chromic acid. An additional problem in the regeneration of chrome plating solutions is removal of low concentrations of cations such as Fe3+, Cu2+, Ni2" ". [Pg.469]

Polyvinylpyridinium chlorochromate has been prepared by reacting cross-linked polyvinylpyridine with CrOg in acid solution (Frechetet al., 1978). It has been shown to be similar in oxidizing properties to the polymer-supported chromic acid polymer previously mentioned (Cainelli et al., 1976a). It could be readily regenerated. [Pg.176]

Another example of combined metal removal and electrolyte regeneration is provided by the removal of copper, zinc and cadmium from chromic acid stripping and etching solutions (Chapter 7). [Pg.479]

See other pages where Chromic acid solutions regeneration is mentioned: [Pg.565]    [Pg.62]    [Pg.1545]    [Pg.278]    [Pg.321]    [Pg.1367]    [Pg.468]    [Pg.469]    [Pg.1549]    [Pg.149]    [Pg.279]    [Pg.279]    [Pg.275]    [Pg.380]    [Pg.421]    [Pg.42]    [Pg.64]    [Pg.817]    [Pg.13]    [Pg.100]    [Pg.817]    [Pg.421]    [Pg.4706]    [Pg.305]    [Pg.413]    [Pg.187]    [Pg.549]    [Pg.6962]   
See also in sourсe #XX -- [ Pg.475 ]



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