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Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

AutorPetrova, Bilyana; Tsyntsarski, Boyko; Budinova, Temenuzhka; Petrov, Nartzislav; Fernández Velasco, Leticia ; Ovín Ania, María Concepción
Palabras claveCoal tar pitch
Furfural
Activated carbon
p-Nitrophenol
Adsorption
m-Aminophenol
Fecha de publicaciónago-2011
EditorElsevier
CitaciónChemical Engineering Journal 172(1): 102-108 (2011)
Resumen[EN] Adsorption of m-aminophenol and p-nitrophenol from aqueous solution on activated carbon synthesized on the base of industrial by product (coal tar pitch) and furfural was investigated. The adsorption capacity of the activated carbon and its oxidized modification is related to the surface area and composition of the prepared materials, as well as to the nature of the adsorbents. Despite the moderate porosity, the prepared materials display adequate adsorption capacity towards the investigated aromatic compounds. Both adsorbates show higher affinity towards the hydrophobic carbon, confirming that the retention mechanism occurs via non-specific interactions between the electronic density of the adsorbent and the aromatic pollutants. Electrostatic interactions may also appear depending on the solution pH and the charge distribution of the carbons; we have established that this parameter has a strong influence on the final performance of the oxidized carbon, where repulsive interactions that reduced the uptake of the carbon were found to appear within a larger pH range.
Versión del editorhttp://dx.doi.org/10.1016/j.cej.2011.05.075
URIhttp://hdl.handle.net/10261/95777
DOI10.1016/j.cej.2011.05.075
ISSN1385-8947
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