Batch studies on the removal of gold(III) from aqueous solution by Azolla filiculoides
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- Antunes, A., Watkins, G. & Duncan, J. Biotechnology Letters (2001) 23: 249. doi:10.1023/A:1005633608727
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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.