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자료유형
학술대회자료
저자정보
Bolan,N (University of South Australia) Naidu.R (University of South Australia) Parkn,J. (University of South Australia) Choppala,G. (University of South Australia)
저널정보
한국토양비료학회 한국토양비료학회 학술발표회 초록집 The 9th International Conference of The East and Southeast Asis Federation of Soil Science Societies
발행연도
2009.10
수록면
216 - 222 (7page)

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Unlike organic contaminants, most metals do not undergo microbial or chemical degradation and the total concentration of these metals in soils persists for a long time after their introduction. With greater public awareness of the implications of contaminated soils on human and animal health there has been increasing interest amongst the scientific community in the development of technologies to remediate contaminated sites. For diffuse distribution of metals (e.g. fertilizer-derived Cd input in pasture soils), remediation options generally include amelioration of soils to minimise the metal bioavailability. Bioavailability can be minimised through chemical and biological immobilisation of metas using a range of inorganic compounds, such as lime and phosphate(P) compounds, and organic compounds, such as biosolid. Reducing metal availability and maximizing plant growth through inactivation may also prove to be an effective method of in situ soil remediation on industrial, urban, smelting, and mining sites. The more localised metal contamination found in urban environments (e.g. Cr contamination in timber treatment plants) is remediated by metal mobilization processes that include bioremediation(including phytoremediation) and chemical washing. Removal of metals through phytoremediation techniques and the subsequent recovery of the metals (i.e. phytomining) or their safe disposal are attracting research and commercial interests. However, when it is not possible to remove the metals from the contaminated sites by phytoremediation, other viable options, such as in-situ immobilisation should be considered as an integral part of risk management. This paper provides an overview of the sources of some of the common heavy metals in relation to remediation of contaminated sites.

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Abstract
Sources of heavy metals
Bioavailability and remediation of contaminated sites
The role of soil amendments in remediation
Conclusion
References

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