Gold Phytomining: A New Idea for Enviromental Sustainablity in Indonesia
DOI:
https://doi.org/10.17014/ijog.1.1.1-7Keywords:
gold, phytomining, tailing, new business, phytoremediation, agricultureAbstract
New technology is needed to protect the safety and health of communities and the environment at ASGM locations in Indonesia. This technology must be simple, cheap, easy to operate, and financially rewarding. A proven option that should be promoted is phytoextraction, a farming activity that could develop agriculture as an alternative livelihood in ASGM areas. This is a technology where plants are used to extract metals from waste rock, soil, or water. These metals can be recovered from the plant in its pure form, then be sold or recycled. Gold phytoextraction is a commercially available technology, while an international research has shown that phytoextraction will also work for mercury. In the context of this idea, tailings would be contained in ‘farming areas’ and cropped using phytoextraction technology. Gold and mercury would be extracted in the crops, with the remaining mercury burden of the tailings becoming adsorbed to soil constituents. The system would be financially rewarding to ‘gold farmers’. The economic value of this scenario could facilitate the clean-up and management of mercury pollution, reducing the movement of mercury from tailings into soil, water, and plants, thereby mitigating environmental and human risk in the mining areas. The goal of the described research is to promote agriculture as an alternative livelihood in ASGM areas. The gold value of the phytoremediation crop should provide a cash incentive to artisanal farmers who develop this new agricultural enterprise. The benefits will be social, environmental, and economic, as opportunities for education, employment, new business, the containment of toxic mercury, food safety and security, and revenue are all realized.
References
Anderson, C., Moreno, F., and Meech, J., 2005. A field demonstration of gold phytoextraction technology. Minerals Engineering, 18, p.385-392. doi:10.1016/j.mineng.2004.07.002
Anderson, C.W.N., Brooks, R.R., Chiarucci, A., LaCoste, C.J., LeBlanc, M., Robinson, B.H., Simcock, R., and Stewart, R.B., 1999. Phytomining for nickel, thalium and gold. Journal of Geochemical Exploration, 67, p.407-415. doi:10.1016/S0375-6742(99)00055-2
Anderson, C.W.N., Brooks, R.R., Stewart, R.B., and Simcock, R., 1998a. Harvesting a crop of gold in plants. Nature, 395, p.553-554. doi:10.1038/26875
Anderson, C.W.N., Brooks, R.R., Stewart, R.B., and Simcock, R., 1998b. Gold uptake by plants. Gold Bulletin, 32 (2), p.48-51. Doi:10.1007/BF03214790
Brooks, R.R., Chambers, M.F., and Nicks, L.J., 1998. Phytomining. Trends in Plant Science, 3, p.359-362. doi:10.1016/S1360-1385(98)01283-7
Dunn, C.E., 1995. Biogeochemical prospecting for metals, In: Brook, R.R., Dunn, C.E., and Hall, G.E.M. (Eds.), Biological systems in mineral exploration and processing, Ellis Horword, Hemel Hemtead, p.371-426.
Gardea-Torresdey, J.L., Peralta-Videa, J.R., de La Rosa, G., and Parsons, J.G., 2005. Phy-toremediation of heavy metals and study of the metal coordination by X-ray absorption spectroscopy. Coordination Chemistry Re¬views, 249, p.1797-1810.
Lamb, A.E., Anderson, C.W.N., and Haverkamp, R.G., 2001. The extraction of gold from plants and its applications to phytomining. Chemistry in New Zealand, 3, p.1-33.
Mohan, B.S., 2005. Phytomining of gold. Current Science, 88 (7), p.1021-1022.
Moreno, F.N., Anderson, C.W.N., Stewart, R.B., Robinson, B.H., Ghomsei, M., and Meech, J.A., 2005. Induced plant uptake and transport of mercury in the presence of sulfur-containing ligads and humic acid. New Phytologist, 166 (2), p.445-454. doi:10.1111/j.1469-8137.2005.01361.x
Msuya., F.A., Brooks, R.R., and Anderson, C.W.N., 2000. Chemiccally-induced uptake of gold by root crop: its significance for phytomining. Gold Bulletin, 33 (4), p.134-137. doi:10.1007/BF03215491
Robinson B.H., Leblanc M., and Petit, D., 1998. The potential of Thlaspi cearulescens for phyto-remediation of contaminated soils. Plant Soil, 203, p. 47-56.
Robinson, B.H., Brooks, R.R., and Clothier, B.E., 1999. Soil amendments affecting nickel and cobalt uptake by Berkheya coddii: potential use for phytomining and phytoremediation. Annals of Botany, 84, p.689-694. doi:10.1006/anbo.1999.0970
Schwartz, C., Echevarria, G., and Morel, J.I., 2003. Phytoextraction of cadmium with Thlaspi cearulescens. Plant Soil, 249, p.27-35. doi:10.1023/A:1022584220411
