Sugarcane Vinasse and Glycerol as Potential Carbon Sources for Sulfate-Rich Wastewater Treatment: Mitigating the Impacts of Acid Mine Drainage.

ABSTRACT: This study investigated the anaerobic co-digestion of sugarcane vinasse (SV) and glycerol (GOH) as potential carbon sources for treating a sulfate-rich and acidic wastewater (pH 4.0-5.4). The sulfidogenic bioreactor operation was divided into six phases, varying carbon sources and COD/SO₄ ^2- (chemical oxygen demand/sulfate) ratios. In Phases I-III, SV was the sole carbon source (COD/SO₄ ^2- = 1.6-1.2). Phase IV employed co-digestion of SV and GOH, while Phases V and VI used GOH alone, with metals added in Phase VI to simulate acid mine drainage. The highest sulfate reduction (99%) was achieved under co-digestion of SV and GOH for a COD/SO₄ ^2- ratio of 1.4, demonstrating that co-substrate addit

SUBMITTER: Nogueira EW 

PROVIDER: S-EPMC12750253 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature