AHMAD, A.; EVELYN, E.; ANDRIO, D.; AVRILIANI, D.; DALIL, M.; HAMZAH, A. Sustainable Biohydrogen Production from Palm Oil Mill Effluent: Effect of Hydraulic Retention Time in a Hybrid Anaerobic System. Leuser Journal of Environmental Studies, [S. l.], v. 4, n. 1, p. 69–78, 2026. DOI: 10.60084/ljes.v4i1.379. Disponível em: https://heca-analitika.com/ljes/article/view/379. Acesso em: 3 may. 2026.