Characterization of Sludge Samples from Different Msme Units in Kolkata
Authors
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Department of Microbiology, St. Xavier’s College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal ,IN
Dipankar Roy -
Department of Microbiology, St. Xavier’s College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal ,INArup Kumar Mitra
Keywords:
Industrialization, Sludge, Chromium, Cobalt, Bioremediation, Heavy metals, Cation exchange capacity, Electrical conductivity..Abstract
Industrialization and urbanization pose threat to environment for heavy metal contamination, and this has been a matter of concern of all. Heavy metals beyond the permissible limit are very hazardous for living being. Monitoring of the physico-chemical properties and heavy metal content of the sludge samples releasing from different industries which gets mixed with the soil are necessary from the public point of view. The present study consists of physicochemical properties and heavy metal content of sludge samples of different MSME in Kolkata, India. For this analysis 12 sludge samples were collected from different industries like Paint, Galvanizing, Electroplating, Tannery, etc. Physicochemical properties such as pH, Electrical conductivity, Organic carbon, Nitrogen, P2O5, K2O, Cation Exchange Capacity, Moisture Content, Sulphur and Water Holding Capacity (WHC), and metals like, Chromium, Nickel, Copper, Zinc, Cadmium, Lead, Cobalt, Ferrous, Manganese, Magnesium and Calcium were analysed. It has been observed that for toxicity Chromium and Cobalt are in steady amount and must be remediated. As the sludges are good for microorganisms’ growth, the heavy metals (especially Chromium and Cobalt) should be bioremediated by growing microorganisms as microorganisms have the property to biologically remediate the heavy metals.
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