Model of the sewage sludge-straw composting process integrating different heat generation capacities of mesophilic and thermophilic microorganisms

Copyright © 2015 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 43(2015) vom: 15. Sept., Seite 72-83
1. Verfasser: Białobrzewski, I (VerfasserIn)
Weitere Verfasser: Mikš-Krajnik, M, Dach, J, Markowski, M, Czekała, W, Głuchowska, K
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Aerobic composting Mathematical modeling Mesophilic bacteria Sewage sludge Thermophilic bacteria Organic Chemicals Sewage Soil
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520 |a A mathematical model integrating 11 first-order differential equations describing the dynamics of the aerobic composting process of sewage sludge was proposed. The model incorporates two microbial groups (mesophiles and thermophiles) characterized by different capacities of heat generation. Microbial growth rates, heat and mass transfer and degradation kinetics of the sewage sludge containing straw were modeled over a period of 36days. The coefficients of metabolic heat generation for mesophiles were 4.32×10(6) and 6.93×10(6)J/kg, for winter and summer seasons, respectively. However, for thermophiles, they were comparable for both seasons reaching 10.91×10(6) and 10.51×10(6)J/kg. In the model, significant parameters for microbial growth control were temperature and the content of easily hydrolysable substrate. The proposed model provided a satisfactory fit to experimental data captured for cuboid-shaped bioreactors with forced aeration. Model predictions of specific microbial populations and substrate decomposition were crucial for accurate description and understanding of sewage sludge composting 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Aerobic composting 
650 4 |a Mathematical modeling 
650 4 |a Mesophilic bacteria 
650 4 |a Sewage sludge 
650 4 |a Thermophilic bacteria 
650 7 |a Organic Chemicals  |2 NLM 
650 7 |a Sewage  |2 NLM 
650 7 |a Soil  |2 NLM 
700 1 |a Mikš-Krajnik, M  |e verfasserin  |4 aut 
700 1 |a Dach, J  |e verfasserin  |4 aut 
700 1 |a Markowski, M  |e verfasserin  |4 aut 
700 1 |a Czekała, W  |e verfasserin  |4 aut 
700 1 |a Głuchowska, K  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 43(2015) vom: 15. Sept., Seite 72-83  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnas 
773 1 8 |g volume:43  |g year:2015  |g day:15  |g month:09  |g pages:72-83 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2015.05.036  |3 Volltext 
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