Adsorption of a textile dye "Indanthrene Blue RS (C.I. Vat Blue 4)" from aqueous solutions onto smectite-rich clayey rock.

Islem Chaari, Mongi Feki, Mounir Medhioub, Jalel Bouzid, Emna Fakhfakh, Fakher Jamoussi

Laboratoire de Georessources, CERTE BP 95, 2050 Hamam-Lif, Tunisia. chaari_islem@yahoo.fr

Journal of hazardous materials 2009 Dec 30

filter terms:

The adsorption of a textile dye, namely, Indanthrene Blue RS (C.I. Vat Blue 4) onto smectite-rich clayey rock (AYD) and its sulphuric acid-activated products (AYDS) in aqueous solution was studied in a batch system with respect to contact time, pH, and temperature. The adsorbents employed were characterized by X-ray diffraction, infrared spectroscopy and specific surface area, cation exchange capacity and point of zero charge were also estimated. The effect of contact time on dye adsorption showed that the equilibrium was reached after a contact time of 40 min for the both adsorbents. The optimum pH for dye retention was found 6.0 for AYDS and 7.3 for AYD. The equilibrium adsorption data were analysed using the Langmuir and Freundlich isotherms. The adsorption capacities (Q(m)) for AYD and AYDS were found 13.92 mg/g and 17.85 mg/g, respectively. The effect of temperature on the adsorption was also investigated; adsorption of Indanthrene Blue RS is an endothermic process. This study demonstrates that all the considered adsorbents can be used as an alternative emerging technology for water treatment.

Citation

Islem Chaari, Mongi Feki, Mounir Medhioub, Jalel Bouzid, Emna Fakhfakh, Fakher Jamoussi. Adsorption of a textile dye "Indanthrene Blue RS (C.I. Vat Blue 4)" from aqueous solutions onto smectite-rich clayey rock. Journal of hazardous materials. 2009 Dec 30;172(2-3):1623-8