Physical and chemical characterization of residual sludge biochar. TERRA LATINOAMERICANA, [S. l.], v. 37, n. 3, p. 243–251, 2019. DOI: 10.28940/terra.v37i3.409. Disponível em: https://terralatinoamericana.org.mx/index.php/terra/article/view/409. Acesso em: 11 jun. 2026.