Abstract
Anaerobic digestion of dairy cow manure (CM), the organic fraction of municipal solid waste (OFMSW), and cotton gin waste (CGW) was investigated with a two-phase pilot-scale anaerobic digestion (AD) system. The OFMSW and CM were digested as single wastes and as combined wastes. The single waste digestion of CM resulted in 62 m3 methane/ton of CM on dry weight basis. The single waste digestion of OFMSW produced 37 m3 methane/ton of dry waste. Co-digestion of OFMSW and CM resulted in 172 m3 methane/ton of dry waste. Co-digestion of CGW and CM produced 87 m3 methane/ton of dry waste. Comparing the single waste digestions with co-digestion of combined wastes, it was shown that co-digestion resulted in higher methane gas yields. In addition, co-digestion of OFMSW and CM promotes synergistic effects resulting in higher mass conversion and lower weight and volume of digested residual.
Original language | English (US) |
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Pages (from-to) | 8288-8293 |
Number of pages | 6 |
Journal | Bioresource Technology |
Volume | 99 |
Issue number | 17 |
DOIs | |
State | Published - Nov 2008 |
Bibliographical note
Funding Information:The authors would like to acknowledge financial assistance from the waste-management education research consortium (WERC/DOE), the energy development organization (NEDO) of Japan, and Gonzalez Dairy of Southwest New Mexico.
Keywords
- Agricultural waste
- Anaerobic digestion
- Biogas
- Dairy manure
- Municipal waste