Iranian Firm Produces Green Pigment from Wastewater of Electroplating Workshops

The company uses a new and low-cost method in which the electroplating workshop does not incur any costs to produce green chromium oxide nanoparticles from the wastewater.

Due to the higher surface to volume ratio of nanoparticles, this material causes more coverage in colors and increases transparency compared to micron scale particles. This substance lowers the sintering temperature in the glaze and creates antibacterial properties in paints and inks.

These nanoparticles are used in paint industries (antibacterial paints, anti-corrosion, wear-resistant, resistant to certain atmospheric and thermal conditions), ink industries (antibacterial inks, tile and ceramic printer ink), glazing industries (colored glazes), industries which produce chemical materials for construction (colored and wear-resistant concretes) and pad-making industries (strengthening the wear resistance of pads).

Green pigments are the materials used to create the green colors seen in painting and the other arts.

Most come from minerals, particularly those containing compounds of copper. Green pigments reflect the green portions of the spectrum of visible light, and absorb the others.

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