Portal de Cartagena
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Around fifteen researchers present today and tomorrow at the Polytechnic University of Cartagena (UPCT) biological techniques for the rehabilitation of contaminated soils at the scientific symposium organized within the framework of the Life + Riverphy project of the Soil Management, Use and Recovery research group. Waters (GARSA).
The conference was opened by the Vice Chancellor for Research, Beatriz Miguel, and the Director General of the Environment of the Community, Juan Madrigal, who has announced the imminent creation of a working group with various directorates general of the CARM to develop "an plan for the rehabilitation of soils affected by mining ", whose first phase will be the contracting of an inventory of contaminated spaces.
"It is important to take action and the previous work of the UPCT will point out specific solutions for each situation," said Madrigal, noting that there are 29 abandoned mining facilities in the Region.
GARSA has "20 years working in the mining regions of Cartagena-La Unión and Mazarrón", as its director, Ángel Faz, recalled, and with the Riverphy project it is rehabilitating one kilometer of the Guadalentín river, with a high presence of metals such as the chromium that are being experimentally valued in a cement factory.
In the essays and studies presented by the researchers of the UPCT in this day, the risk characterization and analysis carried out in more than twenty mineral deposits of the Region are analyzed.
"We carry out geophysical, geochemical, geotechnical, hydrological and vegetation studies, finding risks due to metal mobility and particle dispersion", explains José Alberto Acosta.
Among the proposed rehabilitation measures, and implemented in the deposit of Santa Antoinette and next to the landfill of El Gorguel, is the assisted phytostabilization, which consists of the use of vegetation to immobilize metals with the aim that "the contaminated areas do not they are a source of contamination for their environment ", argues Raúl Zornoza.
"We use plants that are tolerant to contaminants, which retain their metals in their roots and in the soil around them, preventing them from dispersing and transferring to other areas," he says.
The plants, which are initially assisted with fertilizers and amendments, also help to create landscape and fix the soil, "curbing erosion and the drag of materials by wind or rain," adds the UPCT researcher.
Source: UPCT
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