Optimizing Anodizing Baths with Diffusion Dialysis (By: Daniel E. Bailey) Diffusion dialysis is ideally suited for the recycling of sulfuric acid anodize solutions. Diffusion dialysis provides improved anodize quality, consistent anodic thicknesses, cooler and less energy-demanding baths, while eliminating production downtime associated with the dumping and remaking of the anodize bath. The passive, continuous diffusion dialysis process enables the anodizer to efficiently remove and control the dissolved aluminum content in the bath while recovering and returning a high percentage of the sulfuric acid back into the process bath. The diffusion dialysis process also removes and controls other contaminant build-up in the anodize bath, such as copper, iron, lead, magnesium, manganes

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