Grain fermentability largely determines the feed value of grains for ruminants. Our objective was to evaluate the variation in kinetics of gas production of cereal grains and the relationship among gas production, chemical composition and feed value. Eighteen barley, 99 corn, 23 sorghum, and 57 wheat samples were fermented in vitro for 48 h. Gas production was measured with a computerized syste...

In this study, the main aim is to evaluate mixing ratio of co-digestion buffalo manure (BM) and excess sludge (ES) influenced for methane yield digestate dewaterability. Five batch experiments with different BM ES ratios were carried out under thermophilic mesophilic conditions. The increased by 10.1–73.5% conditions 87.9–153.3% conditions, compared mono-anaerobic digestion same Shannon Chao1 i...

In this work, the efficiency and the technical feasibility of the anaerobic digestion of vegetable tannery industry primary sludge (VTPS) was investigated. Tests were conducted under mesophilic conditions in three laboratory scale (150 L) reactors. The investigation included two different solids retention time (15 and 25 d) and the codigestion of VTPS plus fleshing. Results showed that an incre...

Four parameters affecting hydrothermal pretreatment (HTP) of municipal sludge prior to anaerobic digestion and fermentation were investigated. Partial factorial design including several key HTP at two distinct levels, temperature (170 190 °C), retention time (RT) (10 30 min), pH (4 10), solid content (SC) (4% 16%), studied. Further, the impact on mesophilic thermophilic was explored compared. R...

The best co-digestion ratio between mezcal vinasses and bovine manure was investigated to produce methane.Five mixtures in different proportionswere compared (v/v): 25-75, 50-50, 75-25, 100-0, 0-100, with six replications. As reactors, 496 mL glasscontainers hermetic seal were used, 300 of active volume under mesophilic conditions (36 ± 1 oC) for 10 days. pH, total solids, volatile solids vinas...