Comparative Study of Biogas Generations From Pineaple Peels and Spent Maize Grains Wastes and Their Ph-Parametric Correlations Using a Galvanized Iron Fixed-Dome Biodigester. Global Journal of Science Frontier Research, [S. l.], v. 11, n. 9, p. 13–20, 2011. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/100127. Acesso em: 6 feb. 2026.