Combining anaerobic digestion and hydrothermal liquefaction in the conversion of dairy waste into energy: A techno economic model for New York state
Combining anaerobic digestion and hydrothermal liquefaction in the conversion of dairy waste into energy: A techno economic model for New York state
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DOI：
10.1016/j.wasman.2019.12.029
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发表时间：
2020-02-15
期刊：
影响因子：
8.1
通讯作者：
Tester, Jefferson W.
中科院分区：
文献类型：
--
作者：
Kassem, Nazih;Sills, Deborah;Tester, Jefferson W.
全球对降低温室气体排放（尤其是农业部门）的兴趣和政策不断增加。例如，在美国，拥有大型乳制品企业的州可能会结合经过验证的粪便增值技术，例如厌氧消化和水热液化。可持续的粪便处理将增加能源和其他有用副产品（即沼气、生物原油和水力炭）的回收，并降低对环境的影响。在这项研究中，调查了在纽约州实施集中式生物能源系统的经济可行性。这种转型的可行性取决于许多因素，包括资本成本、贴现率和其他融资安排、电力销售价格、激励措施以及农场规模和地点。在占纽约州近 50% 奶牛场的大规模实施中，我们的分布式混合厌氧/水热系统模型每天可处理 5.9 亿升湿粪肥，每天产生 6.07 亿千瓦时电力、162,000 升生物原油和 117,000 公斤水力炭。电力销售价格是一个关键因素。将电力销售价格从批发（0.06 美元/千瓦时）提高到零售（0.18 美元/千瓦时）使净现值从 3.95 亿美元增加到 15 亿美元（考虑到 40 年的项目生命周期）。 (C) 2019 Elsevier Ltd. 保留所有权利。
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.