This paper analyses the thermodynamic aspects of ions adsorption on a granular activated carbon and a char derived from a South African applied to the removal of chromium from aqueous solution. Experiments have been carried out at ambient temperature, by varying pH and salinity levels. Redox reactions occurring between the superficial functional groups and the hexavalent chromium ions lead to the formation of trivalent chromium. Experimental results show that the activated carbon has a higher selectivity for chromate species while the char tends to adsorb trivalent chromium cations preferentially. Eventually the Langmuir model has been used for the interpretation of experimental results.

Adsorption of chromium by natural and industrial materials / DI NATALE, Francesco; Lancia, Amedeo; A., Molino; D., Karatza; D., Musmarra. - STAMPA. - 1:(2006), pp. 515-522. (Intervento presentato al convegno First mediterranean Congress chemical Engineering for Environment tenutosi a Venice nel 4-6- October 2006).

Adsorption of chromium by natural and industrial materials

DI NATALE, Francesco;LANCIA, AMEDEO;
2006

Abstract

This paper analyses the thermodynamic aspects of ions adsorption on a granular activated carbon and a char derived from a South African applied to the removal of chromium from aqueous solution. Experiments have been carried out at ambient temperature, by varying pH and salinity levels. Redox reactions occurring between the superficial functional groups and the hexavalent chromium ions lead to the formation of trivalent chromium. Experimental results show that the activated carbon has a higher selectivity for chromate species while the char tends to adsorb trivalent chromium cations preferentially. Eventually the Langmuir model has been used for the interpretation of experimental results.
2006
Adsorption of chromium by natural and industrial materials / DI NATALE, Francesco; Lancia, Amedeo; A., Molino; D., Karatza; D., Musmarra. - STAMPA. - 1:(2006), pp. 515-522. (Intervento presentato al convegno First mediterranean Congress chemical Engineering for Environment tenutosi a Venice nel 4-6- October 2006).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/306910
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact