Contaminated soils represent an important problem from the ecological, environmental and economic point of view, having a significant impact on human health. In Spain there are four LIFE projects that seek the decontamination of soils that have European funding, including the Discovered Life project in Bailín to combat decontamination caused by lindane.
During yesterday and today, the leaders of the four LIFE projects meet on a networking day to share technical and management experiences in international projects and share knowledge in common areas, which can be used to improve or extend projects And their results.
In the Department of Rural Development and Sustainability, experts from four autonomous communities (Asturias, Madrid, Murcia and Aragon) met in what is the fourth meeting of these conferences, the first to be held in the Aragonese community. Here they presented the progress made in the four projects and the first ones to do so were the people in charge of the I + Darts Project. He is concerned about the decontamination of the Asturian valleys where mining activity has left mercury and heavy metals in the soil. The work carried out by the University of Oviedo, the Government of the Principality of Asturias and the Sogener society are focused on using innovative recovery technologies for their real-scale application, economically feasible and that are directed towards green technologies, such as The use of plants for the restoration of soils.
For its part, the Bioxisoil Project is based on the optimization of the combination of physicochemical and biological techniques to recover large areas affected by organic contamination. It is carried out by the Center for Energy, Environmental and Technological Research (CIEMAT) and the Polytechnic University of Madrid and began when the Ministry of Defense of the Navy offered to the group of researchers some sites in a zone of marsh Cádiz in which there were some old diesel fuel tankers so that CIEMAT scientists could experience the combination of these techniques.
Also, the RiverPhy Project is developed in Murcia and is based on the rehabilitation of the Guadalentín river channel contaminated by heavy metals from industries, farms and agricultural uses. For this, the technique used is called phytoextraction and uses native accumulating plants to absorb heavy metals and excess nutrients from the soil. The project is supervised by the Universidad Politécnica de Cartagena and different administrations of the region.
The participants visit in Sabiñánigo the dumps of Bailín and Sardas to know on the ground the problems of lindane contamination and the advances in the ISCO technique of the Discovered Life Program.
The ISCO technique is to cause chemical oxidation on the affected soil which aims to reduce concentrations of pollutants in soil and groundwater to levels acceptable to the environment. To do this, a liquid (oxidizing agent) is injected into the soil, which passes through its mass and causes the chemical destruction (oxidation) of the contaminants, turning them into smaller and less dangerous compounds. These are extracted to the surface to be treated.