Title: Feedlot animal wastes into useful materials

Abstract: A method for converting feedlot fecal waste materials into methane and animal feed is disclosed. In the disclosed method, the feedlot fecal waste materials are collected, combined with water to form a slurry and the slurry is thereafter subjected to an anaerobic fermentation process. The anaerobic fermentation process is carried out under conditions such that a methane rich gas is formed which can be collected and utilized as an energy source. The liquid residue material from the anaerobic fermentation step is thereafter subjected to an aerobic fermentation process to produce a protein rich material that can be utilized as an animal feed. The liquid residue remaining from the aerobic fermentation process can be utilized as a fertilizer material.

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Inventors: Lynn, Howard D. (Hereford, TX, US)

Application Number: 600919
Filing Date: 1975-07-31
Publication_date: 1976-08-03
Assignee:
Primary Class(es): 426/55 47/1.4, 210/603, 210/605, 210/612, 426/56, 426/807, 435/167, 435/813, 435/819
Other Classes:
US Patent Ref:

2004706	Jun, 1935	Nuske	71/7.
2867945	Jan, 1959	Gotaas et al.	210/15.
3666106	May, 1972	Green	210/16.
3838199	Sep, 1974	Coe et al.	426/55.
3846559	Nov, 1974	Stevens	426/56.

Other Refs:
Primary Examiner: Monacell, A. Louis
Assistant Examiner: Penland, R. B.
Attorney: Hubbard, Thurman, Turner & Tucker