THE UTILIZATION OF BIOGAS SLUDGE BIOCHAR TO LEAD ZERO WASTE SYSTEM IN BIOGAS IMPLEMENTATION: THE EFFECT OF VOLUME ON CARBON DIOXIDE AND METHANE CONTENT. International Journal of Geomate, [S. l.], v. 20, n. 79, p. 119–124, 2021. Disponível em: https://geomatejournal.com/geomate/article/view/237. Acesso em: 13 oct. 2026.