The effect of different pretreatments on biomethanation kinetics of industrial Organic Fraction of Municipal Solid Wastes (OFMSW)

This paper studies the effect of both thermochemical (under different pressures, temperatures and alkaline agent dosage) and biological (using mature compost, sludge and the fungus Aspergillus awamori) pretreatments on the kinetic of dry-thermophilic (20% Total Solids and 55°C) anaerobic digestion o...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2011-07, Vol.171 (2), p.411-417
Main Authors: Fdez.-Güelfo, L.A., Álvarez-Gallego, C., Sales Márquez, D., Romero García, L.I.
Format: Article
Language:English
Subjects:
Anaerobic digestion
Applied sciences
Aspergillus awamori
Biological and medical sciences
biological treatment
Biotechnology
Chemical engineering
composts
equations
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
fungi
Kinetic
methane production
Methods. Procedures. Technologies
municipal solid waste
OFMSW
Others
Pollution
Pretreatment
sludge
specific growth rate
temperature
total solids
Urban and domestic wastes
Various methods and equipments
Wastes
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Summary:This paper studies the effect of both thermochemical (under different pressures, temperatures and alkaline agent dosage) and biological (using mature compost, sludge and the fungus Aspergillus awamori) pretreatments on the kinetic of dry-thermophilic (20% Total Solids and 55°C) anaerobic digestion of industrial organic fraction of the municipal solid wastes (OFMSW).Municipal solid waste, which was not collected separately, from an industrial 30mm-trommel placed in a Mechanical and Biological Treatment (MBT) plant was used in this study.The kinetic equations for substrate-utilization and product-generation from Romero's model (1991) have been used to characterize process kinetics and determine the effect of pretreatments on kinetic parameters. The results obtained in this study indicate than the best pretreatment is precomposting, since an increase of the microorganism's maximum specific growth rate (μmax) between 160 and 205%, with respect to non-pretreated OFMSW, can be achieved.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2011.03.095