Conversion of coffee and plastics residues into activated carbon by chemical activation with ammonia. Scientia Agropecuaria, [S. l.], v. 17, n. 2, p. 409–418, 2026. DOI: 10.17268/sci.agropecu.2026.029. Disponível em: https://revistas.unitru.edu.pe/index.php/scientiaagrop/article/view/7474. Acesso em: 18 jul. 2026.