Thermophilic biogasification of biomass
Mesophilic and thermophilic digestion runs were conducted with the pure land-based biomass species, water hyacinth (Eichhornia crassipes) and Coastal Bermuda grass (Cynodon dactylon), and a blend of hyacinth, grass, MSW, and sewage sludge. A mixed biomass-waste hybrid feed was included because it has a superior nutritional balance relative to the pure feeds and it facilitates year-round operation of a biomass-to-SNG process. (7) The studies were conducted at 35/sup 0/ and 55/sup 0/C, generally believed to be optimum for mesophilic and thermophilic digestion of organic feeds. Results of mesophilic digestion were to provide baseline performance data for evaluation of thermophilic digester performance. It was decided that the feed affording the best thermophilic performance would be pretreated with dilute sodium hydroxide solution at the selected digestion temperature of 55/sup 0/C to improve methane production rate and yield. In addition, thermophilic runs were planned to investigate ways to reduce chemical requirements for alkaline pretreatment and feed slurry neutralization.
- OSTI ID:
- 5595797
- Report Number(s):
- CONF-800352-3
- Country of Publication:
- United States
- Language:
- English
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Advanced thermophilic digestion of biomass blends
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Related Subjects
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
ALKALINE HYDROLYSIS
ALKANES
ANAEROBIC DIGESTION
AQUATIC ORGANISMS
BIOCONVERSION
BIOSYNTHESIS
CHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRYOGENIC FLUIDS
DATA
DATA FORMS
DECOMPOSITION
DIGESTION
EXPERIMENTAL DATA
FLUIDS
GRASS
HYDROCARBONS
HYDROLYSIS
INFORMATION
LOADING RATE
LYSIS
MANAGEMENT
MESOPHILIC CONDITIONS
METHANE
NUMERICAL DATA
NUTRIENTS
ORGANIC COMPOUNDS
PLANTS
PROCESSING
SEWAGE
SEWAGE SLUDGE
SOLVOLYSIS
SYNTHESIS
TABLES
THERMOPHILIC CONDITIONS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER HYACINTHS
YIELDS