Abstract

Chromium (VI) is a thoughtful and common environmental chemical. In nature, chromium can be found both as chromium (VI) or as chromium (III).Chromium (III) is less lethal and definitely adsorbed ins oils and waters, whereas chromium (VI), which is the most toxic form, is not eagerly adsorbed and maximum of its salts are soluble. Numerous bacteria have been noticeable that can change extremely water-soluble and toxic Cr(VI) to unsolvable and rather non-toxic Cr(III), bacterial bioremediation of Cr(VI) contamination is controlled by a number of difficulties, in precise chromium poisonousness to the remediating cells. Cr (VI) is a lethal, resolvable environmental contaminant. Bacteria can decrease chromate to the unsolvable and less poisonous Cr (III). The Hexavalent form of chromium is the most toxic and cancer-causing and produces health dangerous effect. Hexavalent chromium is of specific environmental worry due to its toxicity and flexibility and is thought-provoking to remove from industrial waste water. Reducing Cr (VI) to Cr (III) makes simpler its removal from effluent and also reduces its poisonousness and mobility. So, we can apply the modern biotechnology for the elimination of numerous toxic complexes.

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