Mehta, K D and Pandey, B D and Mankhand, T R (2002) Bio-chemical recovery of valuable metals from Indian Ocean nodules in presence of pyrite and sulphur. Transactions of the Indian Institute of Metals, 55 (3). pp. 71-80.
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The biodissolution of copper, nickel and cobalt from the Indian Ocean manganese nodules has been investigated in presence of pyrite and elemental sulphur using Thiobacillus ferrooxidans (Tf) and Thiobacillus thiooxidans (Tt) as the microorganisms. The leaching of manganese nodules proceeds with reduction of Mn4+ to Mn2+ by ferrous ions generated from pyrite and H2SO3 generated from that of sulphur by bacterial action. Breaking the lattice structure of manganese and iron based minerals like todorokite, birnessite, lithiophorite and goethite by chemico-bacterial action, releases the valuable metals such as copper, nickel and-cobalt thereby dissolving them in the aqueous solution.
|Uncontrolled Keywords:||Ocean manganese nodules; birnessite; todorokite; lithiophorite; chemico-bacterial|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||INVALID USER|
|Deposited On:||25 Jul 2011 18:14|
|Last Modified:||25 Jul 2011 18:14|
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