Potential for Biomethanisation of CO2 from Anaerobic Digestion of Organic Wastes in the United Kingdom
Potential for Biomethanisation of CO2 from Anaerobic Digestion of Organic Wastes in the United Kingdom
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DOI：
10.3390/pr10061202
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发表时间：
2022-06
期刊：
影响因子：
3.5
通讯作者：
A. Bywater;S. Heaven;Yue Zhang-;C. Banks
中科院分区：
文献类型：
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作者：
A. Bywater;S. Heaven;Yue Zhang-;C. Banks
英国(UK)有一个脱碳战略，其中包括来自氢气和生物甲烷的能源。后者来自不断增长的厌氧消化(AD)市场，该市场在2020年以沼气的形式生产了23.3太瓦时的能源。根据该战略，必须通过去除二氧化碳(CO2)将其升级为生物甲烷：这一目标也可以通过二氧化碳的生物甲基化来实现，从而减轻对碳捕获和储存的需求。结果来自对公开可用的数据集的调查，并结合建模来确定潜在的规模和知识差距。文献数据被用来按原料类型估计最大生物甲烷浓度：从食物垃圾的79%到牲畜粪便的93%。来自不同政府来源的数据被用来估计目前AD基础设施下二氧化碳生物甲基化的总体潜力。生物甲烷生产的增加值从57%到61%不等，但强调需要更一致的数据收集方法。然而，平均而言，如果在英国目前运营的所有AD工厂中应用二氧化碳生物甲基化，根据2020年的数据，发电量可能会提高12,954 GWh。这足以证明，在英国和世界范围内，将二氧化碳生物甲基化纳入脱碳战略是合理的。
The United Kingdom (UK) has a decarbonisation strategy that includes energy from both hydrogen and biomethane. The latter comes from the growing anaerobic digestion (AD) market, which in 2020 produced 23.3 TWh of energy in the form of biogas. According to the strategy, this must be upgraded to biomethane by removal of carbon dioxide (CO2): a goal that could also be fulfilled through CO2 biomethanisation, alleviating the need for carbon capture and storage. Results are presented from a survey of publicly available datasets coupled with modelling to identify potential scale and knowledge gaps. Literature data were used to estimate maximum biomethane concentrations by feedstock type: these ranged from 79% for food wastes to 93% for livestock manures. Data from various government sources were used to estimate the overall potential for CO2 biomethanisation with current AD infrastructure. Values for the uplift in biomethane production ranged from 57% to 61%, but the need for more consistent data collection methodologies was highlighted. On average, however, if CO2 biomethanisation was applied in all currently operating UK AD plants an energy production uplift of 12,954 GWh could be achieved based on 2020 figures. This is sufficient to justify the inclusion of CO2 biomethanisation in decarbonisation strategies, in the UK and worldwide.