Effect of COD/SO42- Supply Ratio Variations of Sulfate-Reducing Bacteria of Sulphood Raise in Acid Mine DrainageHardyanti Nurandani, Utomo Sudarno, Oktaviana Angelica, Serafina Katrin and Junaidi JunaidiE3S Web Conf., 73 (2018) 05009DOI: https://doi.org/10.1051/e3sconf/20187305009