Anionic Dye Removal with a Thin Cationic Polyaniline Coating on Cellulosic Biomaterial.

Autor: Ferchichi K; Laboratoire de Recherche: Caractérisations, Applications et Modélisation de Matériaux, Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire El Manar, Tunis 2092, Tunisia., Chouchaine A; Laboratoire de Recherche: Caractérisations, Applications et Modélisation de Matériaux, Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire El Manar, Tunis 2092, Tunisia., Amdouni N; Laboratoire de Recherche: Caractérisations, Applications et Modélisation de Matériaux, Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire El Manar, Tunis 2092, Tunisia., Chevalier Y; Laboratoire d'Automatique, de Génie des Procédés et de Génie Pharmaceutique, Université de Lyon 1, UMR 5007 CNRS, 43 bd 11 Novembre, 69622 Villeurbanne, France., Hbaieb S; Laboratoire de Recherche: Caractérisations, Applications et Modélisation de Matériaux, Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire El Manar, Tunis 2092, Tunisia.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 Mar 28; Vol. 9 (14), pp. 15935-15949. Date of Electronic Publication: 2024 Mar 28 (Print Publication: 2024).
DOI: 10.1021/acsomega.3c09031
Abstrakt: This paper reports the development of novel adsorbent materials using polyaniline (PANI) grafted onto Posidonia (POS) fibers, aimed at efficiently removing phenol red (PSP), an anionic dye, from aqueous solutions. The synthesis involved the copolymerization of aniline grafted on the surface of the POS and aniline monomer in solution, resulting in a chemically bound thin PANI layer on the POS bioadsorbent. Structural characteristics and binding affinities of these adsorbents with PANI under its emeraldine salt (POS@PANI-ES) or emeraldine base (POS@PANI-EB) forms are reported. The rapid adsorption kinetics observed are attributed to enhanced accessibility to PANI adsorption sites on the POS surface. The binding percentages of PSP to POS@PANI-ES and POS@PANI-EB materials were found to be 97 and 50%, respectively, after 15 min of contact time. The Langmuir model for localized adsorption sites and the Volmer model for nonlocalized adsorption as a mobile layer were fitted to the experimental adsorption isotherms of PSP to POS@PANI-EB and POS@PANI-ES, yielding the thermodynamic parameters of adsorption. The adsorption capacities of PSP on POS@PANI-EB and POS@PANI-ES were 37.8 and 71.5 μmol g -1 , respectively. The adsorption of PSP remained above 80% at moderate salt concentrations of around 0.1 mol L -1 ; however, higher concentrations of NaCl and CaCl 2 in PSP solutions significantly reduced the adsorption on POS@PANI-ES.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
Externí odkaz: