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U.S. Department of Energy
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Monfort dirt lot experiments. Status report

Technical Report ·
DOI:https://doi.org/10.2172/6601596· OSTI ID:6601596
A mobile processing unit is being used to investigate the feasibility of producing fuel gas and an energy-intensive refeed product from dirt feedlot residues by anaerobic fermentation. Results to date have shown that: a stable fermentation can be achieved utilizing aged feedlot pen residue if a sufficient adaptation period is provided. Methane yields of 2.75 ft/sup 3//pound volatile solids fed can be attained at a loading rate of 0.25 pounds volatile solids/ft/sup 3/, 10 day retention time and thermophilic temperature of 57/sup 0/C. The fermentor liquid effluent is acceptable to cattle as a feed ingredient and was used to provide one-half the daily supplemental protein for twenty steers. Residual pharmaceuticals and low levels of heavy metals as well as various anions and cations may possibly impose some additional stress upon the system but do not present a significant detriment to successful operation. Feedlot residue is highly variable in both dry matter and inert content with typical particle size in the micron range.
Research Organization:
Hamilton Standard, Windsor Locks, CT (USA)
OSTI ID:
6601596
Report Number(s):
COO-2952-17
Country of Publication:
United States
Language:
English