Methane production and effluent quality from fermentation of beef cattle manure and molasses

Conference · Thu Jan 01 04:00:00 EST 1981 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:5249900

Hashimoto, A G

The effect of mixing molasses and beef cattle manure on methane (CH/sub 4/) production and effluent quality was evaluated. The manure and molasses were mixed so that they contributed varying percentages in the mixture, as follows: 100% manure (100:0); 75% manure and 25% molasses (75:25); and 50% manure and 50% molasses (50:50). At similar hydraulic retention time (HRT) and volatile solids (VS) loading rates, fermentors receiving the 50:50, 75.25, and 100:0 mixtures produced the highest, middle, and lowest volumetric CH/sub 4/ production rates (m/sup 3/CH/sub 4//m/sup 3/ fermentor day), respectively. Kinetic evaluation showed that increased CH/sub 4/ production rates of molasses containing substrates were due only to higher ultimate CH/sub 4/ yields (B/sub 0/) of the manure-molasses mixtures, and not due to reduced inhibition nor increased microbial growth rate. B/sub 0/ were 0.325, 0.335, and 0.360 m/sup 3/ CH/sub 4//kg VS fed for the 100:0, 75:25 and 50:50 mixtures, respectively. The addition of molasses to manure also decreased the ammonia to total nitrogen ratio in the effluent.

• Research Organization: Dept. of Agriculture, Clay Center, NE
• OSTI ID: 5249900
• Report Number(s): CONF-810554-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 11
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
AGRICULTURAL WASTES
ALKANES
ANAEROBIC DIGESTION
ANIMALS
BIOCONVERSION
BIOSYNTHESIS
CATTLE
CHEMICAL OXYGEN DEMAND
DIGESTION
DOMESTIC ANIMALS
HYDROCARBONS
LIQUID WASTES
MAMMALS
MANAGEMENT
MANURES
METHANE
MOLASSES
ORGANIC COMPOUNDS
ORGANIC WASTES
PROCESSING
PRODUCTION
RUMINANTS
SYNTHESIS
VERTEBRATES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
YIELDS