This work is focused on the valorization of brewer’s spent grains (BSG) into volatile fatty acids (VFA) through acidogenic fermentation. VFAs are building blocks for several applications, such as bioplastics’ production. Using acid hydrolysis pre-treatment, batch assays were performed and impact organic load (OL) pH VFA production from BSG hydrolysate was assessed. Regardless condition, produce...

Four organic loading disturbances were performed in lab-scale EGSB reactors fed with ethanol. In load disturbance 1 (LD1) and 2 (LD2), the organic loading rate (OLR) was increased between 5 and 18.5 kg COD m(-3) day(-1), through the influent ethanol concentration increase, and the hydraulic retention time decrease from 7.8 to 2.5 h, respectively. Load disturbances 3 (LD3) and 4 (LD4) were appli...

The feasibility of anaerobic digestion of dairy wastewater at 10°C was investigated in a high height : diameter ratio EGSB reactor. Stable performance was observed at an applied organic loading rate (OLR) of 0.5-2 kg COD m(-3) d(-1) with chemical oxygen demand (COD) removal efficiencies above 85%. When applied OLR increased to values above 2 kg COD m(-3) d(-1), biotreatment efficiency deteriora...

The effect of hydrodynamic shear force on the nitrogen removal performance of anaerobic ammonium oxidation (anammox) granules was studied in four batch-type Expanded Granular Sludge Bed (EGSB) reactors. The reactors were operated under different hydrodynamic shear force (0.021, 0.024, 0.026 and 0.029 N m, respectively) by control the circulation flow rate. The results showed that nitrite and am...