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Preparation and characterization of actived carbon from the char produced in the thermolysis of granulated srap tyres

AutorLópez Gómez, Félix Antonio ; Álvarez Centeno, Teresa ; Rodríguez, O.; Alguacil, Francisco José
Palabras claveScrap
Actived carbon
Thermolytic process
Fecha de publicación2013
EditorTaylor & Francis
CitaciónJournal of the Air and Waste Management Association 63 (5): 534-544 (2013)
ResumenThe char produced in the thermolysis of granulated scrap tyres has few market outlets, reducing the economic viability of the thermolytic process. This paper reports the potential of this char as a low-cost precursor of porous carbons. The tyre-derived char was demineralized in either alkaline or acidic media to reduce its ash, zinc, sulfur, and silica contents. The lowest impurity content was achieved with an HNO3/H2O treatment. The resulting demineralized char was then subjected to activation by KOH or CO2. The Brunauer-Emmett-Teller (BET)-specific surface area of the activated carbon produced by the KOH treatment was 242 m2/g, whereas that of the CO2-activated carbon was 720 m2/g. The textural properties of the latter product were similar to those of some commercial activated carbons. The use of tyre-derived char as a precursor of porous carbons could render the thermolytic treatment of scrap tyres more economically attractive.
URIhttp://hdl.handle.net/10261/112618
DOI10.1080/10962247.2013.763870
Identificadoresdoi: 10.1080/10962247.2013.763870
issn: 1096-2247
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