3052
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
4 CONCLUSION
The present study examined an example of optimization of a
phyto-extraction process in the presence of metal ions, based on
numerical modeling. According to the assumptions related to
the model and the analyzed scenarios, it was highlighted that, by
modifying root depth and introducing irrigation, the phyto-
extraction process could be optimized for contaminants
characterized by low (e.g. Zn
2+
), and high (e.g. Pb
2+
) retardation
factors. Moreover, both cases studied evinced better
performances for root distribution shallower than plume
contamination.
As a general consideration, the proposed methodology
provided important data for the design and evaluation of a
phyto-extraction process.
5 ACKNOWLEDGEMENTS
The authors would like to thank the Institutions of the
Brazilian Government CAPES and CNPq for the scholarships,
and FAPERJ, for the constant support on research.
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