Batch studies on the removal of gold(III) from aqueous solution by Azolla filiculoides |
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| Authors: | A.P.M. Antunes G.M. Watkins J.R. Duncan |
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| Affiliation: | (1) Department of Biochemistry and Microbiology, Rhodes University, P.O. Box 94, Grahamstown, 6140, South Africa;(2) Department of Chemistry, Rhodes University, P.O. Box 94, Grahamstown, 6140, South Africa |
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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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| Keywords: | Azolla filiculoides batch optimization studies biosorption gold(III) |
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