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A Novel High-Efficiency Natural Biosorbent Material Obtained from Sour Cherry (Prunus cerasus) Leaf Biomass for Cationic Dyes Adsorption

Mosoarca, Giannin, Vancea, Cosmin, Popa, Simona, Dan, Mircea, Boran, Sorina·2023·Materials
DOI 10.3390/ma16124252PMC PMC10302337
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Abstract

The present study aimed to investigate the potential of a new lignocellulosic biosorbent material derived from mature leaves of sour cherry (Prunus cerasus L.) for removing methylene blue and crystal violet dyes from aqueous solutions. The material was first characterized using several specific techniques (SEM, FTIR, color analysis). Then, the adsorption process mechanism was investigated through studies related to adsorption equilibrium, kinetics, and thermodynamics. A desorption study was also performed. Results showed that the Sips isotherm provided the best fit for the adsorption process of both dyes, with a maximum adsorption capacity of 168.6 (mg g−1) for methylene blue and 524.1 (mg g−1) for crystal violet, outperforming the capacity of other similar adsorbents. The contact time needed to reach equilibrium was 40 min for both studied dyes. The Elovich equation is the most suitable model for describing the adsorption of methylene blue, while the general order model is better suited for the adsorption of crystal violet dye. Thermodynamic analyses revealed the adsorption process to be spontaneous, favorable, and exothermic, with physical adsorption involved as the primary mechanism. The obtained results suggest that sour cherry leaves powder can be a highly efficient, eco-friendly, and cost-effective adsorbent for removing methylene blue and crystal violet dyes from aqueous solutions.

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Metadata

Authors
Mosoarca, G., Vancea, C., Popa, S., Dan, M., & Boran, S.
Venue
Materials
Publisher
MDPI AG
Published
2023-06-08
Volume
16
Issue
12
Pages
4252
ISSN
1996-1944
DOI
10.3390/ma16124252
PMC
PMC10302337
Cited by
27
References
1
Language
en
Licence
creativecommons.org/licenses/by/4.0/ (vor)

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