Anaerobic digestion of cellulosic wastes: laboratory tests
Anaerobic digestion is a potentially attractive technology for volume reduction of cellulosic wastes. A substantial fraction of the waste is converted to off-gas and a relatively small volume of biologically stabilized sludge is produced. Process development work is underway using a 75-L digester to verify rates and conversions obtained at the bench scale, to develop start-up and operating procedures, and to generate effluent for characterization and disposal studies. Three runs using batch and batch-fed conditions have been made lasting 36, 90, and over 200 days. Solids solubilization and gas production rates and total solids destruction have met or exceeded the target values of 0.6 g cellulose per L of reactor per day, 0.5 L off-gas per L of reactor per day, and 80% destruction of solids, respectively. Successful start-up procedures have been developed, and preliminary effluent characterization and disposal studies have been done. A simple dynamic process model has been constructed to aid in further process development and for use in process monitoring and control of a large-scale digester. 10 references, 17 figures, 4 tables.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6361748
- Report Number(s):
- ORNL/TM-9259; ON: DE85003814
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LOW-LEVEL RADIOACTIVE WASTES
ANAEROBIC DIGESTION
RADIOACTIVE WASTE PROCESSING
BENCH-SCALE EXPERIMENTS
CELLULOSE
EXPERIMENTAL DATA
METHANE
SOLID WASTES
VOLUME
ALKANES
BIOCONVERSION
CARBOHYDRATES
DATA
DIGESTION
HYDROCARBONS
INFORMATION
MANAGEMENT
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
POLYSACCHARIDES
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SACCHARIDES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing