期刊
WASTE MANAGEMENT
卷 103, 期 -, 页码 228-239出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2019.12.029
关键词
Agriculture waste processing; Dairy manure; Anaerobic digestion; Hydrothermal liquefaction; Bioenergy; Techno-economic analysis
资金
- Cornell's Atkinson Center for a Sustainable Future
- New York State's Center for Advanced Technologies program [C150124]
- USDA National Institute of Food Agriculture [2016-69007-25149]
- BARD program, the US-Israel Binational Agricultural Research and Development fund [US-5051-17]
There is increasing global interest and policies being enacted to lower greenhouse gas emissions, especially from the agricultural sector. In the U.S. for example, states with large dairy operations may combine proven manure valorization technologies, such as anaerobic digestion and hydrothermal liquefaction. Sustainable manure treatment would increase the recovery of energy and other useful co-products, namely biogas, biocrude oil and hydro-char as well as lower the environmental impacts. In this study, the economic feasibility of implementing a centralized bioenergy system in New York State was investigated. The feasibility of this transformation depends on many factors, including capital costs, discount rates, and other financing arrangements, electricity selling prices, incentives and farm sizes and locations. For a large-scale implementation in New York State accounting for nearly 50% of the state's dairy farms, our model of a distributed, hybrid anaerobic/hydrothermal system was shown to treat 590 million liters of wet manure per day, producing 607 million kWh of electricity, 162,000 L of biocrude oil and 117,000 kg of hydro-char per day. Electricity selling price is a critical factor. Increasing the electricity selling price from wholesale ($0.06/kWh) to retail ($0.18/kWh) increased the net present value from $395 million to $1.5 billion (considering a 40-year project lifetime). (C) 2019 Elsevier Ltd. All rights reserved.
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