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  1. 04-01-2014 #4
    EddyCurrent's Avatar
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    EddyCurrent
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    From Wikipedia

    "Anodizing is one of the more environmentally friendly metal finishing processes. With the exception of organic (aka integral color) anodizing, the by-products contain only small amounts of heavy metals, halogens, or volatile organic compounds. Integral color anodizing produces no VOCs, Heavy Metals, or Halogens as all of the byproducts found in the effluent streams of other processes come from their dyes or plating materials.[15]

    The most common anodizing effluents, aluminium hydroxide and aluminium sulfate, are recycled for the manufacturing of alum, baking powder, cosmetics, newsprint and fertilizer or used by industrial wastewater treatment systems."
    Last edited by EddyCurrent; 07-01-2014 at 10:31 PM.
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