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Codigestion of manure and organic waste at centralized biogas plants: Process imbalances and limitations

Nielsen, Henrik Bangsø and Angelidaki, Irini (2008) Codigestion of manure and organic waste at centralized biogas plants: Process imbalances and limitations. Speech at: 5th international symposium of anaerobic digestion of solid waste & energy crops, Hammamet, Tunisia, May 25-28, 2008.

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Summary

The present study focuses on process inhibitions in Danish centralized biogas plants. Collection of data from the plants and a number of interviews showed that inhibitions occur frequently. High concentrations of ammonia, long chain fatty acids or other inhibitory compounds, and foaming in prestorage tanks are well known causes of inhibition. These problems mainly occurs due to: 1) inadequate knowledge about the waste composition and 2) its degradation characteristics, 3) inadequate process surveillance especially with regard to volatile fatty acids and 4) insufficient pre-storage capacity causing inexpedient mixing of the different waste products in the pre-storage tanks.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Speech
Subjects: Food systems > Recycling, balancing and resource management
Values, standards and certification > Technology assessment
Research affiliation: Denmark > DARCOF III (2005-2010) > BIOCONCENS - Biomass and bio-energy production in organic agriculture
Denmark > DTU, RISØ - Risø National Laboratory
Deposited By: Schmidt, Head of program, PhD Jens Ejbye
ID Code:14519
Deposited On:30 Sep 2008
Last Modified:20 Sep 2011 13:13
Document Language:English
Refereed:Not peer-reviewed

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