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Physical and chemical characterisation of metal finishing industrial wastes
Magalhães, Jorge M.; Silva, João Eudes da; Castro, F.; Labrincha, J. A.In EU countries approximately 150,000 ons/year of galvanic sludges are generated by 4000 industrial units from the orresponding wastewater treatment plants. These sludges are generally classified as hazardous (European Waste Catalogue as adopted in Council Decision 2000/532/CE and as amended by Decisions 2001/118/EC, 2001/119/EC and 2001/573/CE), basically due to the presence of heavy metals. This work attemp...
Effect of experimental variables on the inertization of galvanic sluges in clay...
Magalhães, Jorge M.; Silva, João Eudes da; Castro, F.; Labrincha, J. A.The incorporation of several industrial wastes in ceramic matrixes had been attempted as an effective low expense technique for the fixation of metallic species in usable products or simply to reduce the residue volume for further disposal. However, the dominant mechanism of the inertization process and the relevant influent parameters are still unknown, mostly due to the complexity of the systems. This work re...
Role of the mixing conditions and composition of galvanic sludges on the inerti...
Magalhães, Jorge M.; Silva, João Eudes da; Castro, F.; Labrincha, J. A.Hydroxide-metal sludges from electroplating industry are a potential source of environmental contamination due to their high content of heavy metals. The incorporation of these residues in a ceramic matrix can be a promising way to suppress the harmful effect of metals normally present in those sludges. This work reports the role of the mixing time between the waste and ceramic materials and of the calcination ...
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