Valorization of olive–pomace as a green sorbent to remove Basic Red 46 (BR46) dye from aqueous solution

In the current work, a by-product of local olive pomace was valorized as an eco-friendly biosorbent to clear Basic Red 46 dye (BR46). The surface properties of the biosorbent were studied by various analytical implements such as XRF, XRD, FTIR, SEM, and pH pzc . High removal rates (> 90%) were at...

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Bibliographic Details
Published in:Biomass conversion and biorefinery 2024-07, Vol.14 (13), p.14951-14962
Main Authors: Graba, Zahra, Akkari, Imane, Bezzi, Nacer, Kaci, Mohamed Mehdi
Format: Article
Language:English
Subjects:
Aqueous solutions
Biotechnology
Contaminants
Dyes
Energy
Original Article
Renewable and Green Energy
Sorbents
Surface properties
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Summary:In the current work, a by-product of local olive pomace was valorized as an eco-friendly biosorbent to clear Basic Red 46 dye (BR46). The surface properties of the biosorbent were studied by various analytical implements such as XRF, XRD, FTIR, SEM, and pH pzc . High removal rates (> 90%) were attained at optimal parameters: 240 min of contact, pH of 7, and 400 rpm at 23 °C. The Freundlich model presented the best adjustment of equilibrium curves, while the pseudo-second-order model was the practical kinetic model that matched the experimental data. The results of the thermodynamic investigation revealed that the adsorption process is spontaneous (Δ G ° 
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-022-03639-y