Valorisation of industrial waste is widely recognized as a key to sustainable industrial development. Waste valorization refers to any industrial processing activities aimed at reusing, recycling, or composting wastes, thus converting it into valuable products or resources of energy. The mine tailings and coal combustion by-products could be transformed into added value by using as raw materials after appropriate processing, incorporation in manufacturing process stages, or addition of tailing materials to finished products. 

The overall objective of the RecMine project is to use industrial wastes from five different European countries (Romania, Bulgaria, Portugal, Spain and Turkey) for the obtaining of new green materials, considering the advantages of 3D printing method. Mine tailings and fly ash from different sources are studied aimed at their use as raw materials for geopolymers obtaining. The chemical and mineralogical composition of raw materials could only partically predict materials’ behavior under alkaline conditions during the gepolymerisation process. To support the development of environmental friendly technology, additional tests are needed as: the determination of alkaline reactive components, solubility in aqueos media, as well as geochemical distribution of heavy metals. In order to assess the eco-friendly material, leachability of components in raw materials and geopolymer products, their mobility and potential bioavailability, level of encapsulation as well as their fate during the product usage should be studied by appropriately chosen procedures.  Thus, the estimation of environmental footprint impose for a specific algortithm for verification and application of analytical chemistry procedures. An novel algorithm is presented, some major issues for its application are discussed. The approach allowed to broaden the information retrived from the obtained experimental data in support for the green technology design.