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Removal of metal ions using an industrial biomass with reference to environmental control

Sekhar, K Chandra and Subramanian, S and Modak, JM and Natarajan, KA (1998) Removal of metal ions using an industrial biomass with reference to environmental control. In: International Journal of Mineral Processing, 53 (1-2). pp. 107-120.

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Abstract

The utility of a waste, dead fungal biomass in the removal of various metal ions such as calcium, iron, nickel and chromium when present individually and in possible combinations has been demonstrated. Although the tests were carried out using synthetic solutions of varying pH and metal ion concentrations, the results are representative of typical waste effluents emanating from leather, paper, paint and mineral processing industries as well as electroplating circuits. The maximum metal uptake was found to be dependent on solution pH (4-5 for Fe, 4-7 for Ca, 6-7 for Ni and 6 for Cr) and increased with biomass loading up to 10 g/l. The adsorption densities for various metal ions could be arranged as Ca > Cr(III) > Ni > Fe > Cr(VI). The presence of co-ions in binary, ternary and quarternary combinations decreased the metal uptake; the Ni uptake being most significantly affected while that of Cr(VI) the least. Possible mechanisms of metal ions removal are outlined along with a flow sheet for potential industrial application.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: waste fungal biomass;calcium;iron;nickel;chromium; biosorption.
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 21 Dec 2009 10:40
Last Modified: 19 Sep 2010 05:26
URI: http://eprints.iisc.ernet.in/id/eprint/19126

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