HEATING VALUE ENHANCEMENT BY BIOGAS PURIFICATION USING NATURAL ZEOLITE AND RICE STRAW-BASED BIOCHAR. International Journal of Geomate, [S. l.], v. 16, n. 55, p. 80–85, 2019. Disponível em: https://geomatejournal.com/geomate/article/view/2483. Acesso em: 11 sep. 2026.