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Technological Proposals for Recycling Industrial Wastes for Environmental Applications

AutorRomero-Hermida, I.; Morales-Flórez, Víctor ; Santos, Alberto; Villena, Antonio; Esquivias, L.
Palabras claveGreenhouse gases
CO2 sequestration
Phosphogypsum
Industrial waste
Fecha de publicación2014
EditorMultidisciplinary Digital Publishing Institute
CitaciónMinerals, 4(3):746-757 (2014)
ResumenA two-fold objective is proposed for this research: removing hazardous and unpleasant wastes and mitigating the emissions of green house gasses in the atmosphere. Thus, the first aim of this work is to identify, characterize and recycle industrial wastes with high contents of calcium or sodium. This involves synthesizing materials with the ability for CO2 sequestration as preliminary work for designing industrial processes, which involve a reduction of CO2 emissions. In this regard, phosphogypsum from the fertilizer industry and liquid wastes from the green olive and bauxite industries have been considered as precursors. Following a very simple procedure, Ca-bearing phosphogypsum wastes are mixed with Na-bearing liquid wastes in order to obtain a harmless liquid phase and an active solid phase, which may act as a carbon sequestration agent. In this way, wastes, which are unable to fix CO2 by themselves, can be successfully turned into effective CO2 sinks. The CO2 sequestration efficiency and the CO2 fixation power of the procedure based on these wastes are assessed
Versión del editorhttp://dx.doi.org/10.3390/min4030746
URIhttp://hdl.handle.net/10261/121059
DOI10.3390/min4030746
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