2011
Ben-Youssef C. and Vázquez-Rodríguez G.A. (2011) Model-based design of different fedbatch strategies for phenol degradation in acclimatized activated sludge cultures. Bioresource Technology 102: 3740-3747. DOI: http://dx.doi.org/10.1016/j.biortech.2010.11.122
Abstract
Microbial degradation of phenol was studied using batch and fedbatch cultures of acclimatized activated sludge under a wide range of phenol (0793 mg l?1) and biomass (0.746.7 g l?1) initial concentrations. As cell growth continued after total phenol removal, the production and later consumption of a main metabolic intermediate was considered the step governing the biodegradation kinetics. A model that takes explicitly into account the kinetics of the intermediate was developed by introducing a specific growth rate model associated with its consumption and the incorporation of a dual-substrate inhibitory effect on phenol degradation. Biomass growth and phenol removal were adequately predicted in all the cultures. Moreover, the model-based design of the fedbatch feeding strategies allowed driving separately the phenol degradation under substrate-limitation and substrate-inhibition modes. A sensitivity analysis was also performed in order to establish the importance of the parameters in the accuracy of model predictions.
Toward a standardization of the microbial inoculum for ready biodegradability testing of chemicals
Modélisation de la cinétique de biodégradation de phénol par granules aérobies
Procedures in Ready Biodegradability Testing: Effects of the Inoculation and the Monitored Parameter
3D reconstruction of Artificially Structured Microbial Consortia (ASMC) by image analysis
Effect of the inoculation level in aerobic biodegradability tests of polymeric materials
Inocula from activated sludge for ready biodegradability testing: Homogenization by preconditioning