Potential application of some native Australian flora and exotic agricultural species in cyanide-induced phytoextraction of gold
The phytoextraction of gold is an exciting new area of research involving the use of plants to extract and bioaccumulate gold from a low grade ore and waste products. The aim of this study was to screen selected Australian native plant species and exotic agricultural species for their potential use in cyanide-induced phytoextraction of gold from a crushed ore body. Plants were grown in a crushed ore body of 1.75 mg/kg gold and treated with 0.1 g/kg and 1 g/kg cyanide. The above-ground biomass was harvested and the gold concentration determined. Mean gold concentrations of up to 27 mg/kg (d. w. ) were found in the plant tissue of Trifolium repens cv. Prestige. Higher gold concentrations were generally found in the stems and older leaves with the lowest gold concentrations in the young leaves. Plants grown in the 1 g/kg cyanide treatment generally had higher concentrations of gold in the plant tissue than plants grown in the 0.l g/kg cyanide treatment. This study demonstrates the potential use of plants to extract and concentrate gold from a low grade ore and waste products.
phytoextraction gold cyanide
R. C. R. Piccinin S. D. Ebbs S. M. Reichman S. D. Kolev I. E. Woodrow A. J. M. Baker
The University of Melbourne, School of Botany, Parkville, 3010, Victoria, Australia, The University Southern Illinois University Carbondale, Department of Plant Biology, Carbondale, Illinois 62901-650 Lincoln University, Agriculture and Life Sciences Division, Lincoln, 7647, New Zealand. The University of Melbourne, School of Chemistry, Parkville, 3010, Victoria, Australia The University of Melbourne, School of Botany, Parkville, 3010, Victoria, Australia
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
919-920
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）