Restoration strategies in soils of Guadiamar area (South Spain). Evaluation of the success after twenty years since the Aznalcóllar mine accident

3 páginas.- 1 figura.-- 3 referencias.-- Comunicación presentada en el Global Syposium on Soil Pollution 2 to 4 May 2018. Roma (Italy).- El documento completo se puede descargar en http://www.fao.org/3/CA1087EN/ca1087en.pdf

The Aznalcóllar accident (1998, Sevilla) was considered as one of the worst environmental catastrophes in Europe. We summarize here 20 years of soil monitoring to evaluate the success of remediation measures in the affected area. In an experimental plot different soil amendments were tested. Positive effect of the amendments on soil pH and organic carbon content were detected. A large-scale monitoring of the soils along the whole area showed a general stabilisation of trace elements in the Guadiamar Green Corridor, although in some spots like river banks and channels are still acidic and contaminated. Phytoremediation can be a feasible alternative to achieve soil remediation in trace element contaminated soils.

We have received support from (FP7/2007-2013) (RECARE) and from Spanish Ministry of Economy and Competitiveness under BIORESMED (AGL2014-55717-R) and RESTECO (CGL2014-52858-R) projects. We thank the staff of Guadiamar Green Corridor for facilities and to the Group SoilPlant and Analysis Service of the IRNAS.

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