Dirt feedlot residue experiments. Quarterly progress report, July 1--September 30, 1977

Technical Report · Sat Oct 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/6642458· OSTI ID:6642458

Turk, M.

Progress is reported in the continued evaluation of baseline performance of the mobile fermentation system utilizing fresh beef steer residue at 0.25 lb. volatile solids/ft/sup 3//day with a ten day residence time and an operating temperature of 57/sup 0/C. Evaluation of the comparative yield from typical aged feedlot pen residue at the same parametric conditions previously used for the baseline study was initiated. Total daily gas production, as well as specific methane yield, indicated a sudden decrease. This decrease, however, stabilized relatively quickly indicating that the material, while having a lower gaseous yield, was not grossly toxic. The 10 day running average of specific methane yield, which acts as a smoothing function for the somewhat more erratic daily yields, indicates a yield of 2.5 ft/sup 3/ CH/sub 4//pound volatile solids. This represents 60% of that obtained from the fresh residue and is most encouraging. During this period of time the concentration of Total Volatile Acid was allowed to rise. That is, no attempts at control (e.g., iron chloride) were made in order to learn what equilibrium value would result. By the end of the reporting period, the TVA concentration was approximately 4000 to 5000 mg/l. (JGB)

• Research Organization: United Technologies Corp., Windsor Locks, CT (USA). Hamilton Standard Div.
• OSTI ID: 6642458
• Report Number(s): COO-2952-15
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
AGRICULTURAL WASTES
ALKANES
ANAEROBIC DIGESTION
ANIMALS
BIOCONVERSION
BIOSYNTHESIS
CATTLE
CHEMICAL REACTORS
CRYOGENIC FLUIDS
DIAGRAMS
DIGESTION
DOMESTIC ANIMALS
FLUIDS
HYDROCARBONS
MAMMALS
MANAGEMENT
MANURES
MEDIUM TEMPERATURE
METHANE
ORGANIC ACIDS
ORGANIC COMPOUNDS
PERFORMANCE
PROCESSING
RESEARCH PROGRAMS
RUMINANTS
SOLID WASTES
SYNTHESIS
VERTEBRATES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
YIELDS