Article Dans Une Revue Journal of Water Process Engineering Année : 2023

Adsorption of ibuprofen from aqueous solution onto a raw and steam-activated biochar derived from recycled textiles insulation panels at end-of-life: Kinetic, isotherm and fixed-bed experiments

Résumé

This study explores the potential use of recycled textile biochar (RT-BC) and steam-activated biochar (RT-SABC), derived from insulation panels at end-of-life, as sorbents forremoving ibuprofen from aqueous solutions. After steam activation, the surface area and micropore volume increased. Subsequently, kinetic and isotherm experiments were investigated at 20 °C, 200 rpm and 50 mg/L ibuprofen solution. Equilibrium was reached after 24 h for RT-BC and 120 h for RT-SABC. The kinetics of RT-BC and RT-SABC followed the pseudo-first-order and Elovich models, respectively. RT-SABC isotherm showed the highest adsorption capacity (53.9 mg g−1), well-fitted into the Sips model. Ibuprofen uptake by RT-SABC was nearly irreversible. Afterward, RT-SABC dynamic performance was evaluated in a fixed-bed column for three bed heights. The breakthrough point (41.7–476.7 h), the volume of effluent treated (0.6–6.4 L at breakthrough) and adsorption capacity (22.09–39.81 mg g−1) increased with bed height (10–30 cm). Thomas and Clark's models simulated the experimental points, confirming second-order kinetics and Sips isotherm. Different functional groups were involved in the adsorption mechanism. Preliminary experiments in tap water on RT-SABC showed a removal (>83 %) due to ionic strength and reduced pH. Therefore, RT-SABC could be an efficient adsorbent for ibuprofen removal from aqueous systems.

Fichier principal
Vignette du fichier
S2214714423003495.pdf (1.11 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04808489 , version 1 (09-07-2025)

Licence

Identifiants

Citer

Christelle Rabbat, Andrea Pinna, Yves Andres, Audrey Villot, Sary Awad. Adsorption of ibuprofen from aqueous solution onto a raw and steam-activated biochar derived from recycled textiles insulation panels at end-of-life: Kinetic, isotherm and fixed-bed experiments. Journal of Water Process Engineering, 2023, 53, pp.103830. ⟨10.1016/j.jwpe.2023.103830⟩. ⟨hal-04808489⟩
128 Consultations
322 Téléchargements

Altmetric

Partager

  • More