INFLUENCE OF SUBSTRATE CONCENTRATION ON THE MACROENERGETIC PARAMETERSOF ANAEROBIC-DIGESTION OF BLACK-OLIVE WASTE-WATER

Tile macroenergetic parameters of the anaerobic digestion of black-oli ve wastewater, i.e. the yield coefficient for the biomass (Y, g VSS/g COD) and the specific rate of substrate uptake For cell maintenance (m , g COD/g VSS.day) decreased 6 times and increased 5 times. respective ly, when the influent substrate concentration increased from 1.1 to 4. 4 g COD/l. This was significant at 95% confidence level. The use of th e Guiot kinetic model allows a more accurate prediction of growth yiel d to be made as it relates substrate utilization to product formation.