期刊
BIORESOURCE TECHNOLOGY
卷 291, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121872
关键词
Anaerobic digestion; Cheese whey; Animal manure; Economic assessment; Net present value
资金
- INNOTRANSLACT project under the program INTERREG POCTEFA [EFA005/15 INNOTRANSLACT]
- European Regional Development Fund
Anaerobic digestion of manure is a common practice; however, the low biogas yield of manure can hamper the profitability of systems in small to medium farms. An increase in biogas yield could be achieved by co-digesting animal manure with co-substrates such as cheese whey. A Techno-economic assessment of anaerobic co-digestion of animal manure and cheese whey (cow, goat and sheep), has been carried out. The results obtained showed that for a farm with 250 adult cattle heads, the revenues generated in an anaerobic mono-digestion process are not able to offset the initial required investment. However, the co-digestion of manure with 30% of cheese whey showed a good economic performance and positive returns (Net Present values > 0, Internal Rate of Return > 11% and a Return of the investment in< 10 years). Electricity selling price and biogas production are the key parameters to determine the profitability of the system.
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