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

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