An integrated biochemical and physical model for the composting process
Magrí Aloy, Albert
Prenafeta-Boldú, Francesc Xavier
Flotats i Ripoll, Xavier
MetadataShow full item record
A dynamic model for the composting process has been developed, which integrates several biochemical and physical processes. Different microbial populations (mesophilic and thermophilic bacteria, actinomycetes and fungi) have been considered, each specialized in certain types of polymeric substrates (carbohydrates, proteins, lipids, hemicellulose, cellulose and lignin) and their hydrolysis products. Heat and mass transfer between the three phases of the system have been taken into account. The gas phase was considered to be composed by nitrogen, oxygen, carbon dioxide, ammonia and water vapour. Model computer simulations provided results that fitted satisfactory the experimental data. A sensitivity analysis was performed to determine the key parameters of the model. The partition of both the composting mass and the active biomass into different major groups of substrates and specialized microbial populations, as well as the factors affecting the gas–liquid equilibrium, were important for an accurate description of the composting process.
Is part ofBioresource Technology, 2007, vol. 98, núm. 17, p. 3278-3293
European research projects
Showing items related by title, author, creator and subject.
Illa i Alibés, Josep; Prenafeta-Boldú, Francesc Xavier; Bonmatí Blasi, August; Flotats i Ripoll, Xavier (Elsevier, 2012)The settlement of organic matter during composting was measured at different levels during the active biodegradation phase in forced-aerated static reactors loaded with different mixtures of organic wastes. The temperature ...
Long-chain fatty acids inhibition and adaptation process in anaerobic thermophilic digestion: Batch tests, microbial community structure and mathematical modelling Palatsi Civit, Jordi; Illa i Alibés, Josep; Prenafeta-Boldú, Francesc Xavier; Laureni, M.; Fernández García, Belén; Angelidaki, I.; Flotats i Ripoll, Xavier (Elsevier, 2010)Biomass samples taken during the continuous operation of thermophilic anaerobic digestors fed with manure and exposed to successive inhibitory pulses of long-chain fatty acids (LCFA) were characterized in terms of specific ...
Influence of synthetic packing materials on the gas dispersion and biodegradation kinetics in fungal air biofilters Prenafeta-Boldú, Francesc Xavier; Illa i Alibés, Josep; Groenestijn, Johan W. van; Flotats i Ripoll, Xavier (Springer, 2008)The biodegradation of toluene was studied in two lab-scale air biofilters operated in parallel, packed respec- tively with perlite granules (PEG) and polyurethane foam cubes (PUC) and inoculated with the same ...