View in EDS

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal.

Saved in:
Bibliographic Details
Title: Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal.
Authors: Thomas, Habila Yusuf, Cavalcante, José Demétrio Nery, de Araújo Padilha, Carlos Eduardo, dos Santos, Everaldo Silvino, Gasparin, Fabiano Perin, da Silva Ries, Lúcia Allebrandt, Sales, Aldo Torres, Menezes, Rômulo Simões Cezar, Dutra, Emmanuel Damilano
Source: Biomass Conversion & Biorefinery; Mar2025, Vol. 15 Issue 5, p6743-6756, 14p
Abstract: The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized residue. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate residue disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were precursors, and methylene blue (MB) dye was used as a solute. The agave residues presented similar contents of lignin (12.1–13.2%) and ash (10.3–13.9%), while the differences were recorded in the holocellulose values (31.4–42.4%) and extractives (23.2–33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. In isotherm experiments, the Freundlich model (R2 = 0.99–0.97) showed better fit than Langmuir (R2 = 0.96–0.85) and Temkin (R2 = 0.74–0.95) models. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochars, offering static (80 mg g−1) and dynamic (180 mg g−1) adsorption values. Thus, thermochemical valorization of agave residue is attractive for obtaining a cheap and environmentally friendly adsorbent. [ABSTRACT FROM AUTHOR]
Copyright of Biomass Conversion & Biorefinery is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Complementary Index
Description
Abstract:The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized residue. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate residue disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were precursors, and methylene blue (MB) dye was used as a solute. The agave residues presented similar contents of lignin (12.1–13.2%) and ash (10.3–13.9%), while the differences were recorded in the holocellulose values (31.4–42.4%) and extractives (23.2–33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. In isotherm experiments, the Freundlich model (R<sup>2</sup> = 0.99–0.97) showed better fit than Langmuir (R<sup>2</sup> = 0.96–0.85) and Temkin (R<sup>2</sup> = 0.74–0.95) models. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochars, offering static (80 mg g<sup>−1</sup>) and dynamic (180 mg g<sup>−1</sup>) adsorption values. Thus, thermochemical valorization of agave residue is attractive for obtaining a cheap and environmentally friendly adsorbent. [ABSTRACT FROM AUTHOR]
ISSN:21906815
DOI:10.1007/s13399-024-05687-y