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Batch studies on the removal of gold(III) from aqueous solution by Azolla filiculoides

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Abstract

Azolla filiculoides removed 86% and 100% of gold(III) from initial metal solutions of 2–10 mg gold l−1 increasing with increased initial concentrations of gold(III). The biomass gave greater than 95% removal efficiency from solution at all biomass concentrations measured. Complete removal of gold occurred at pH 2, with 42% removal at pH 3 and 4, and 63% and 73% removal at pH 5 and 6, respectively. No temperature-dependence removal was observed.

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Authors and Affiliations

  1. Department of Biochemistry and Microbiology, Rhodes University, P.O. Box 94, Grahamstown, 6140, South Africa

    A.P.M. Antunes & J.R. Duncan

  2. Department of Chemistry, Rhodes University, P.O. Box 94, Grahamstown, 6140, South Africa

    G.M. Watkins

Authors
  1. A.P.M. Antunes
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  2. G.M. Watkins
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  3. J.R. Duncan
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Antunes, A., Watkins, G. & Duncan, J. Batch studies on the removal of gold(III) from aqueous solution by Azolla filiculoides. Biotechnology Letters 23, 249–251 (2001). https://doi.org/10.1023/A:1005633608727

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  • DOI: https://doi.org/10.1023/A:1005633608727

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