You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Methane Recovery from Chicken Manure Digestion
C. William Savery and Daniel C. Cruzan
Journal (Water Pollution Control Federation)
Vol. 44, No. 12 (Dec., 1972), pp. 2349-2354
Published by: Water Environment Federation
Stable URL: http://www.jstor.org/stable/25037689
Page Count: 6
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
The large concentration of manure produced by intensive livestock production units provides an opportunity for producing the valuable by-product of methane. To provide preliminary design data for a farm total energy system fueled by bacteria-produced methane, an experimental anaerobic digester of 35-l capacity was built, and daily gas production rates and compositions were determined for loadings of fresh chicken manure. Batch reactor operation in the thermophylic bacteria range at 51°C produced 130 l of gas (69 percent methane and 31 percent carbon dioxide)/kg of wet manure reacted. Attempts at operating the anaerobic digester at 51°C in a continuous-flow, well-stirred mode with hydraulic retention times of 4, 5, and 6.7 days resulted in retarded digester operation. The experimental digester was operated as a batch process in the mesophilic range of 29°C; the yield of methane was comparable, but the production rate was lower than that of the 51°C batch.
Journal (Water Pollution Control Federation) © 1972 Water Environment Federation