Removal of anionic dye from textile industries' effluents by using Tunisian clays as adsorbents. Ζeta potential and streaming-induced potential measurements - Archive ouverte HAL Access content directly
Journal Articles Comptes Rendus. Chimie Year : 2019

Removal of anionic dye from textile industries' effluents by using Tunisian clays as adsorbents. Ζeta potential and streaming-induced potential measurements

Elimination du colorant anionique des effluents des industries textiles par l'usage des argiles tunisiennes comme adsorbants. Mesures du potential zêta et du potentiel d' ecoulement induit

(1) , (2) , (3) , , (1) , , (4)
1
2
3
4

Abstract

In the present work, we have investigated the adsorption capacities of natural raw clays originated from Tunisia, such as those from Tabarka (a mixture of kaolinite and illite) and from Fouchana (a mixture of smectite, kaolinite, and illite), a standard kaolinite (KGa-2), and a palygorskite (PFl-1) for the removal of a reactive red dye (RR 120) usually found in textile industry effluents. Thus, batch adsorption experiments were performed and were tuned by varying different parameters such as adsorption contact time, aqueous phase pH, ionic strength, and initial dye concentration. In addition, zeta potential measurements allowed the determination of the electrical charge and of the dye behavior at the clay ewater interface. Despite the fact that palygorskite has higher porosity and specific surface values, the amount of dye adsorbed on this clay is low in comparison to that of the other solid samples, regardless of the values of pH and ionic strength of the aqueous phase. On the other hand, a higher amount of adsorbed dye was observed on KGa-2, having the lowest specific surface area value. This sample, in comparison to smectite and fibrous clays, was found to be more efficient in the removal the anionic dye, and thus it can be used as an adsorbent for the treatment of effluents in the textile industry. Motscl es: Colorant anionique Adsorption Argile Potentiel d' ecoulement induit Potentiel zêta Effluents textiles r é s u m é Dans ce travail, nous avons etudi e les capacit es d'adsorption des argiles naturelles brutes originaires de Tunisie, telles que celles de Tabarka (m elange de kaolinite et d'illite), de Fouchana (m elange de smectite, kaolinite et illite), une kaolinite standard (KGa-2) et une palygorskite (PFl-1), pour eliminer un colorant rouge r eactif (RR 120) pr esent dans les effluents de l'industrie textile. Ainsi, des exp eriences d'adsorption en batch ont et e r ealis ees, examinant diff erents param etres tels que le temps de contact adsorbante adsorbat, le pH et la force ionique de la phase aqueuse, la concentration initiale en colorant. Par ailleurs, des mesures du potential zêta et du potentiel d' ecoulement induit des diff erentes dispersions aqueuses en absence et en pr esence du colorant ont permis de d eterminer la charge electrique et le comportement du colorant a l'interface argileeeau. Les r esultats montrent que, malgr e le fait que la palygorskite pr esente une porosit e et une surface sp ecifique elev ees, la quantit e de colorant adsorb ee sur cette argile est faible par rapport a celles des autres argiles, quelles que soient les valeurs de pH et de force ionique de la phase aqueuse. Par ailleurs, la quantit e de colorant adsorb e la plus elev ee a et e observ ee sur la kaolinite (KGa-2), qui s'est av er eeêtre l'adsorbant le plus efficace pour eliminer le colorant anionique et traiter les effluents de l'industrie textile.
Fichier principal
Vignette du fichier
Abidi-CRAS-chimie-2019-word.pdf (860.78 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02323138 , version 1 (25-05-2020)

Identifiers

Cite

Nejib Abidi, Joëlle Duplay, Amane Jada, Emna Errais, Malika Ghazi, et al.. Removal of anionic dye from textile industries' effluents by using Tunisian clays as adsorbents. Ζeta potential and streaming-induced potential measurements. Comptes Rendus. Chimie, 2019, 22 (2-3), pp.113-125. ⟨10.1016/j.crci.2018.10.006⟩. ⟨hal-02323138⟩
72 View
62 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More