Anaerobic digestion of whole stillage from a dry-grind corn-based ethanol plant was evaluated by batch and continuous-flow digesters under thermophilic and mesophilic conditions. At whole corn stillage concentrations of 6348 to 50,786 mg total chemical oxygen demand (TCOD)/L, at standard temperature (0 °C) and pressure (1 atm), preliminary biochemical methane potential assays produced 88±8 L (4...

Biochars made from brewer’s spent grain were added to the anaerobic digestion of enhance methane fermentation process and improve biogas production. In research, effect biochars at 300, 450, 600 °C doses 1-8% was tested. The biochemical potential tests in mesophilic conditions performed. took 28 days, yield for each reactor varied 500-650 ml×gVS-1, around 60% substrate degradation obtained. For...

This study was carried out to estimate the relevance of biological supplementation in improving economic efficiency anaerobic digestion (AD). Three kinds silages—maize, grass, and igniscum—were initially inoculated with digestate then supplemented one four vaccines containing different bacteria species (APD®, PPT®, JENOR®) or a yeast mold mixture (HAP®). In addition, each plant silage fermented...

In this study duckweed (Lemna gibba) and waste activated sludge (WAS) were co-digested in different proportions with acclimatized anaerobic granular sludge (AAGS) in mesophilic conditions. The aim was to evaluate if the co-digestion could lead to an increased efficiency of methane production compared to digestion of waste activated sludge alone. Results indicate that co-digestion with both duck...

Cow dung is generally used as the feedstock material for anaerobic digestion to produce biogas. A selection of alternate biomass needed reduce consumption or eliminate use cow dung. Recently, cottonseed hull has been considered primary substrate In this paper, effect biogas production on co-digestion CD with pre-treated CSH using sulfuric acid, hydrochloric hydrogen per oxide, and acetic acid i...

Anaerobic digestion of sewage sludge (SS) and co-digestion with cheese whey (CW) was evaluated in batch conditions under mesophilic and thermophilic regimens. Results indicated that the co-digestion can be successfully attained despite some inhibitory stages that may be initially present due to the accumulation of volatile fatty acids. Degradation of the mixture SS-CW followed a similar pattern...