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您的检索式：作者名="Supratim Biswas"
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| 1 | Microbial leaching of chromite overburden from Sukinda mines,Orissa,India using Aspergillus niger显示文摘Leaching of nickel and cobalt from two physical grades(S1,125-190 μm,coarser and S3,53-75 μm,finer) of chromite overburden was achieved by treating the overburden(2% pulp density) with 21-d culture filtrate of an Aspergillus niger strain grown in sucrose medium.Metal dissolution increases with ore roasting at 600℃ and decreasing particle size due to the alteration of microstructural properties involving the conversion of goethite to hematite and the increase in surface area and porosity as evident from X-ray diffraction(XRD),thermogravimetry-differential thermal analysis(DTTGA),and field emission scanning electron microscopy(FESEM).About 65% Ni and 59% Co were recovered from the roasted S3 ore employing bioleaching against 26.87% Ni and 31.3% Co using an equivalent amount of synthetic oxalic acid under identical conditions.The results suggest that other fungal metabolites in the culture filtrate played a positive role in the bioleaching process,making it an efficient green approach in Ni and Co recovery from lateritic chromite overburden. | Supratim Biswas Saikat Samanta Rajib Dey Siddhartha Mukherjee Pataki C.Banerjee | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，8： | 1 |
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