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We introduce an example of a detailed study of soil texture and geochemistry with the aim of designing appropriate soil washing systems. Concretely, we have studied soils affected by the mining works of “Los Rueldos” (Asturias, Spain). After an initial characterization, composite, representative samples were taken and ICP-MS analysis was carried out. Results showed very high concentrations of As, and significant presence of heavy metals such Hg, Pb and Zn specially in silt-clay fractions obtained after wet sie...

Industrial processes do not get full efficiency and this means that a considerable amount of wastes without economical aim and which will finish in rubbish dumps, hence promoting a large environmental impact. Modern society steer itself, towards getting a sustainable development which minimize the production of these wastes, which are also increasing its economical, environmental and social costs. This fact compels to search solutions which could avoid the generation of this kind of wastes and to get value from th...