AMBAR PERTIWININGRUM; ANDANGWIDI HARTO; MARGARETHAARNITA WURI; ADAM GEMILANG; RACHMAWAN BUDIARTO; MISRI GOZAN. ORGANIC CYCLE SYSTEM: THE RECYCLING OF BIOGAS SLUDGE OF COW MANURE AS BIOCHAR FOR BIOGAS PURIFICATION . GEOMATE Journal, [S. l.], v. 19, n. 72, p. 96–101, 2020. Disponível em: https://geomatejournal.com/geomate/article/view/1130. Acesso em: 10 feb. 2026.