This paper documents the results of an experimental study on cadmium removal from model aqueous solutions by adsorption onto a granular activated carbon (GAC). Adsorption isotherms have been carried out at different pH, salinity and temperature levels. Cadmium adsorption is the highest at neutral pH levels while it strongly decreases by decreasing pH. Due to Cd(OH)2 precipitation, the adsorption becomes irrelevant in alkaline systems. On the contrary temperature and salinity have more limited effects on cadmium capture by the GAC.
Cd(II) removal from aqueous solutions by adsorption onto activated carbon / DI NATALE, Francesco; Erto, Alessandro; Lancia, Amedeo. - STAMPA. - 2:(2007), pp. 689-695. (Intervento presentato al convegno ICHEAP-8 -8th international conference on chemical and process engineering tenutosi a Ischia, Napoli nel 24-27 giugno 2007).
Cd(II) removal from aqueous solutions by adsorption onto activated carbon
DI NATALE, Francesco;ERTO, ALESSANDRO;LANCIA, AMEDEO
2007
Abstract
This paper documents the results of an experimental study on cadmium removal from model aqueous solutions by adsorption onto a granular activated carbon (GAC). Adsorption isotherms have been carried out at different pH, salinity and temperature levels. Cadmium adsorption is the highest at neutral pH levels while it strongly decreases by decreasing pH. Due to Cd(OH)2 precipitation, the adsorption becomes irrelevant in alkaline systems. On the contrary temperature and salinity have more limited effects on cadmium capture by the GAC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
