Well,
Article The Use of Plants for Remediation of Metal-Contaminated Soils
Article Molecular Mechanisms of Heavy Metal Hyperaccumulation and Ph...
Article A comparison of technologies for remediation of heavy metal ...
Regards
Perhaps as Neda suggests, but what procedure would you consider putting in place to capture the heavy metals shed in the contaminated biomass and where would you deposit it?
Considerable attention has been given to the possibility of using hyperaccumulators for phytoremediation/phytomining of contaminated or natural metal-rich soils. However, more extensive research under field conditions for longer durations is required taking also into account that a specific phytoextraction prescription, due to the different site-specific conditions, cannot be applied to every site, even if with the same chemical composition. The investigations need to move from laboratory to field settings to provide realistic information about elemental defences in natural environments, where a plant can be exposed to a plethora of herbivores with different feeding modes, as well as to pathogens and parasites.
Baljit Singh
Hyperaccumulator tree species can be effective in the remediation of sites contaminated with heavy metals especially if these are fast-growing species. But there are crucial issues that need to be considered for the success of such efforts. One is the difficulty of establishing the trees. In the early 2000s, one such big project in Samar, Philippines failed because the seedlings would not grow in the heavily polluted and extremely acidic soil. Second is that the remediation process is slow and therefore takes a long time. Third, is the disposal of the trees after they are harvested. What will you do with them? And lastly the use of the land is limited by the planting of the trees.
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