TY - JOUR AU - Borja, R. AU - Alba, J. AU - Martín, A. AU - Ruiz, A. AU - Hidalgo, F. PY - 1993/04/30 Y2 - 2024/03/28 TI - Characterization and anaerobic digestion of waters from washing of virgin olive oil JF - Grasas y Aceites JA - Grasas aceites VL - 44 IS - 2 SE - Research DO - 10.3989/gya.1993.v44.i2.1102 UR - https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1102 SP - 85-90 AB - A characterization and kinetic study of the anaerobic digestion of waters from washing of virgin olive oil were carried out. The experimental setup used consisted of a 1;litre thorough mixing bioreactor that was operated at 35 °C and loaded with sepiolite-immobilized biomass at a concentration of 10.8 g VSS/L. The bioreactor worked satisfactorily for a hydraulic retention time of 1.1 to 5.0 days and eliminated more than 92% of the initial COD in all instances.Guiot's kinetic model was used to determine the macroenergetic parameters of the system, which was found to have a true yield coefficient for the biomass Y = 0.006 g VSS/g COD and a specific rate of substrate uptake for cell maintenance m = 0.072 g COD/g VSS ∙ day.According to the experimental results obtained, the rate of substrate uptake, Rs (g COD/g VSS ∙ day), was correlated with the concentration of biodegradable substrate, Sb (g COD/L), through an equation of the Michaelis-Menten type. ER -