, Volume 23, Issue 4, pp 249-251

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 2ā€“10 mg gold lāˆ’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.