Methane production by anaerobic digestion of Bermuda grass
Bermuda grass (Cynodon dactylon) is one of the high-yield warm-season grasses that has been suggested as a promising raw material for conversion to methane. Experimental work performed with laboratory digesters to study the anaerobic digestion of Coastal Bermuda grass harvested in Louisiana and having a C/N ratio of 24 is described. Methane yields of about 1.9 SCF/lb of volatile solids( VS) added were observed under conventional mesophilic high-rate conditions. When supplemental nitrogen additions were made, the yields increased up to 3.5 SCF/lb of VS added indicating that the nitrogen content of the grass examined was insufficient to sustain high-rate digestion at the higher yield level. Thermophilic digestion with supplemental nitrogen additions afforded methane yields of about 2.7 SCF/lb VS added. Carbon and energy balances were calculated and the relative biodegradabilities of the organics were estimated.
- OSTI ID:
- 6313096
- Report Number(s):
- CONF-790415-13
- Resource Relation:
- Conference: 177. ACS national meeting, Honolulu, HI, USA, 1 Apr 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GRASS
ANAEROBIC DIGESTION
METHANE
BIOSYNTHESIS
CARBON
CHEMICAL PROPERTIES
ENERGY BALANCE
LOUISIANA
MESOPHILIC CONDITIONS
NITROGEN
PHYSICAL PROPERTIES
PRODUCTIVITY
THERMOPHILIC CONDITIONS
YIELDS
ALKANES
BIOCONVERSION
CRYOGENIC FLUIDS
DIGESTION
ELEMENTS
FLUIDS
HYDROCARBONS
MANAGEMENT
NONMETALS
NORTH AMERICA
ORGANIC COMPOUNDS
PLANTS
PROCESSING
SOUTHWEST REGION
SYNTHESIS
USA
WASTE MANAGEMENT
WASTE PROCESSING
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
090122 - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)