Which of the toxic heavy metals is found in modern tannery industries? 1) nickel 2) zinc 3) chromium 4) lead?
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Chromium is found as toxic heavy metals.
Chromium toxicity:
Industries like electro plating, metallic cleansing and dyeing processing, cement, and leather tanning industries are
the major source and play role in discharging chromium into the environment. Hexavalent chromium is the main
chromium species used in industrial processes, including manufacturing of metallic alloys (the most important use
of Cr), chrome leather tanning, metal cleaning processing, electronics and wood preservation and so on, and is
therefore the most common pollutant in a wide variety of industrial wastes
Chromium toxicity:
Industries like electro plating, metallic cleansing and dyeing processing, cement, and leather tanning industries are
the major source and play role in discharging chromium into the environment. Hexavalent chromium is the main
chromium species used in industrial processes, including manufacturing of metallic alloys (the most important use
of Cr), chrome leather tanning, metal cleaning processing, electronics and wood preservation and so on, and is
therefore the most common pollutant in a wide variety of industrial wastes
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