Demonstration-scale evaluation of a novel high-solids anaerobic digestion process for converting organic wastes to fuel gas and compost

Early evaluations of the bioconversion potential for combined wastes such as tuna sludge and sorted municipal solid waste (MSW) were conducted at laboratory scale and compared conventional low-solids, stirred-tank anaerobic systems with the novel, high-solids anaerobic digester (HSAD) design. Enhanc...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 1998, Vol.70 (1), p.687-695
Main Authors: Rivard, C.J. (Pinnacle Biotechnologies International Inc., Golden, CO.), Duff, B.W, Dickow, J.H, Wiles, C.C, Nagle, N.J, Gaddy, J.L, Clausen, E.C
Format: Article
Language:English
Subjects:
Anaerobic digestion
Anaerobic systems
ANAEROBIC TREATMENT
BIOCONVERSION
Biofuel production
BIOGAS
BIOGAZ
Biological and medical sciences
Biological treatment of sewage sludges and wastes
Biotechnology
COMPOST
Composting
COMPOSTS
DECHET ORGANIQUE
DESECHOS ORGANICOS
Energy
Environment and pollution
Fermentation
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Methane
Municipal solid waste
Organic loading
ORGANIC WASTES
Sludge
Thunnus
TRAITEMENT ANAEROBIQUE
TRATAMIENTO ANAEROBICO
Volatile solids
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Summary:Early evaluations of the bioconversion potential for combined wastes such as tuna sludge and sorted municipal solid waste (MSW) were conducted at laboratory scale and compared conventional low-solids, stirred-tank anaerobic systems with the novel, high-solids anaerobic digester (HSAD) design. Enhanced feedstock conversion rates and yields were determined for the HSAD system. In addition, the HSAD system demonstrated superior resiliency to process failure. Utilizing relatively dry feedstocks, the HSAD system is approximately one-tenth the size of conventional low-solids systems. In addition, the HSAD system is capable of organic loading rates (OLRs) on the order of 20-25 g volatile solids per liter digester volume per d (gVS/L/d), roughly 4-5 times those of conventional systems. Current efforts involve developing a demonstration-scale (pilot-scale) HSAD system. A two-ton/d plant has been constructed in Stanton, CA and is currently in the commissioning/startup phase. The purposes of the project are to verify laboratory- and intermediate-scale process performance; test the performance of large-scale prototype mechanical systems; demonstrate the long-term reliability of the process; and generate the process and economic data required for the design, financing, and construction of full-scale commercial systems. This study presents conformational fermentation data obtained at intermediate-scale and a snapshot of the pilot-scale project
ISSN:0273-2289
1559-0291
DOI:10.1007/BF02920180