Studies of the potential of a native natural biosorbent for the elimination of an anionic textile dye Cibacron Blue in aqueous solution

Hocine Grabi; Fazia Derridj; Wahiba Lemlikchi; Erwann Guénin

doi:10.1038/s41598-021-88657-y

Studies of the potential of a native natural biosorbent for the elimination of an anionic textile dye Cibacron Blue in aqueous solution

Sci Rep. 2021 May 6;11(1):9705. doi: 10.1038/s41598-021-88657-y.

Authors

Hocine Grabi¹, Fazia Derridj², Wahiba Lemlikchi^{3

4}, Erwann Guénin⁵

Affiliations

¹ Laboratory of Applied Chemistry and Chemical Enginering, Faculty of Sciences, UMMTO, 15000, Tizi Ouzou, Algeria. hgrabi@yahoo.fr.
² Laboratory of Physics and Chemistry of Materials, Faculty of Sciences, UMMTO, 15000, Tizi Ouzou, Algeria.
³ Laboratory of Applied Chemistry and Chemical Enginering, Faculty of Sciences, UMMTO, 15000, Tizi Ouzou, Algeria. w.lemlikchi@gmail.com.
⁴ University Algiers 1-Benyoucef Benkhedda, 02 Street Didouche Mourad, 16000, Algiers, Algeria. w.lemlikchi@gmail.com.
⁵ Laboratory of Integrated Transformations of Renewable Matter, University of Technology of Compiègne, 60200, Compiègne, France.

Abstract

This work is devoted to the adsorption of Cibacron Blue (CB) an anionic textile dye, on bean peel (BP) an agricultural waste with neither activation nor carbonization. The adsorption was realized in batch configuration at ambient temperature in acidic medium. The adsorbent was characterized by FTIR, SEM and BET analyses; the equilibrium isotherms and kinetics were also studied. It has been found that this waste could be used as a low-cost biosorbent for CB elimination under optimal working conditions. The rate of CB elimination reaches 95% on bean bark (3.6 g/L) at pH 2.2 and a reject concentration of 25 mg/L. The pseudo-second-order describes suitably the experimental data and the external diffusion is the rate-determining step. The Freundlich isotherm fits better the CB adsorption with a correlation coefficient (R²) of 0.94 and an RMSE = 1.5115. The negative enthalpy (ΔH) and free enthalpy (ΔG°) indicate a physical and spontaneous nature of the CB biosorption onto the biomaterial.