Abstract
Samples of iron ore (haematite) and manganese ore (pyrolusite) of known compositions were equilibrated with aliquots of analysed sample of spent wash. The concentrations of iron(II), iron(III), complexed iron, manganese(II) ions and complexed Mn-ions were determined after increasing durations. One litre of the spent wash was found to extract out 141 mg of total iron and 161 mg of total manganese. In case of iron, the predominance was of iron(II) (92%), whereas in case of manganese it was of the complexed form (95%).
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Pervez, S., Pandey, G.S. Solubilisation effect of spent wash on oxide-ores of manganese and iron. Environ Geochem Health 13, 171–173 (1991). https://doi.org/10.1007/BF01758557
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DOI: https://doi.org/10.1007/BF01758557