Document Detail


A comprehensive model of anaerobic bioconversion of complex substrates to biogas
MedLine Citation:
PMID:  10099616     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A dynamic model describing the anaerobic degradation of complex material, and codigestion of different types of wastes, was developed based on a model previously described (Angelidaki et al., 1993). In the model, the substrate is described by its composition of basic organic components, i.e., carbohydrates, lipids, and proteins, the concentration of intermediates such as volatile fatty acids and long-chain fatty acids, and important inorganic components, i.e., ammonia, phosphate, cations, and anions. This allows dynamic changes of the process during a shift of substrate composition to be simulated by changing the input substrate data. The model includes 2 enzymatic hydrolytic steps, 8 bacterial steps and involves 19 chemical compounds. The model also includes a detailed description of pH and temperature characteristics. Free ammonia, acetate, volatile fatty acids, (VFA) and long-chain fatty acids (LCFA) constitute the primary modulating factors in the model. The model was tested with success in lab-scale reactors codigesting manure with glycerol trioleate or manure with gelatin. Finally, the model was validated using results from a full-scale biogas plant codigesting manure together with a proteinous wastewater and with bentonite-bound oil, which is a waste with high content of lipids. Copyright 1999 John Wiley & Sons, Inc.
Authors:
Angelidaki; Ellegaard; Ahring
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Biotechnology and bioengineering     Volume:  63     ISSN:  1097-0290     ISO Abbreviation:  Biotechnol. Bioeng.     Publication Date:  1999 May 
Date Detail:
Created Date:  1999-04-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502021     Medline TA:  Biotechnol Bioeng     Country:  -    
Other Details:
Languages:  Eng     Pagination:  363-72     Citation Subset:  -    
Affiliation:
The Anaerobic Microbiology/Biotechnology Research Group, Department of Biotechnology, Building 113, The Technical University of Denmark, 2800 Lyngby, Denmark.
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