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Which of the toxic heavy metals is found in modern tannery industries? 1) nickel 2) zinc 3) chromium 4) lead? |
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Answer» m 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 |
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