Solute interactions in soils in relation to bioavailability and remediation of the environment
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(Published version)
Date
2008
Authors
Bolan, N.
Ko, B.
Anderson, C.W.N.
Vogeler, I.
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Conference paper
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Journal of Soil Science and Plant Nutrition, 2008, vol.8, iss.especial, pp.1-5
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5th International symposium of interactions of soil minerals with organic components and microorganisms ISMOM 2008 (24 Nov 2008 - 28 Nov 2008 : Pucon, Chile)
Abstract
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 (Adriano, 2003). 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 minimize the metal bioavailability. Bioavailability can be minimized through chemical and biological immobilisation of metals using a range of inorganic compounds, such as lime and phosphate (P) compounds (e.g. apatite rocks), and organic compounds, such as 'exceptional quality' biosolid (Figure 1; Bolan and Duraisamy, 2003). 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.
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Copyright 2008 The author(s). All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License (https://creativecommons.org/licenses/by-nc/4.0/deed.en)