Environmental and health impacts of atmospheric CO2 removal by enhanced rock weathering depend on nations’ energy mix
Environmental and health impacts of atmospheric CO2 removal by enhanced rock weathering depend on nations’ energy mix
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通过增强岩石风化去除大气二氧化碳对环境和健康的影响取决于各国的能源结构
DOI：
10.1038/s43247-022-00436-3
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发表时间：
2022
影响因子：
7.9
通讯作者：
D. Beerling
中科院分区：
文献类型：
--
作者：
R. Eufrasio;E. Kantzas;N. Edwards;P. Holden;H. Pollitt;J. Mercure;S. C. L. Koh;D. Beerling
强化岩石风化是一种拟议的二氧化碳去除技术，涉及将破碎的硅酸盐岩石（如玄武岩）应用于农业土壤，对作物和土壤具有潜在的共同效益，并缓解海洋酸化。在这里，我们解决了不同的利益相关者的需求，为信息研究量化可能的环境和健康风险的增强岩石风化。使用生命周期评估模型的潜在供应链影响的12个国家进行增强岩石风化部署，提供高达净2 Gt CO2年-1 CDR，我们发现，岩石研磨，而不是采矿对环境影响的主要影响。这一发现在2050年的常规业务和清洁能源组合情景下都成立，但未来过渡到低碳能源系统进行增强岩石风化，提高了增强岩石风化供应链的可持续性。我们发现，在能源和水的需求方面，增强岩石风化与其他大规模的二氧化碳去除策略具有竞争力。根据一项基于过程的生命周期评估，强化岩石风化在土地、能源和水的使用方面与其他碳固存战略具有竞争力，其总体可持续性取决于为其提供能源的能源系统的可持续性。
Enhanced Rock Weathering is a proposed Carbon Dioxide Removal technology involving the application of crushed silicate rocks, such as basalt, to agricultural soils with potential co-benefits for crops and soils, and mitigation of ocean acidification. Here we address the requirement of diverse stakeholders for informative studies quantifying possible environmental and health risks of Enhanced Rock Weathering. Using life-cycle assessment modelling of potential supply chain impacts for twelve nations undertaking Enhanced Rock Weathering deployment to deliver up to net 2 Gt CO2 yr−1 CDR, we find that rock grinding rather than mining exerts the dominant influence on environmental impacts. This finding holds under both a business-as-usual and clean energy mix scenario to 2050 but transitioning to undertaking Enhanced Rock Weathering in the future with low carbon energy systems improves the sustainability of the Enhanced Rock Weathering supply chain. We find that Enhanced Rock Weathering is competitive with other large-scale Carbon Dioxide Removal strategies in terms of energy and water demands. Enhanced rock weathering is competitive with other carbon sequestration strategies in terms of land, energy and water use with its overall sustainability dependent on that of the energy system supplying it, according to a process-based life cycle assessment.
通过增强岩石风化去除二氧化碳的潜力和成本
影响因子：
6.7
作者：
Strefler;Kriegler;Hartmann
通讯作者：
Hartmann
影响因子：
11.4
作者：
Acquaye, Adolf A.;Wiedmann, Thomas;McQueen-Mason, Simon
通讯作者：
McQueen-Mason, Simon
影响因子：
30.7
作者：
Mercure, J. -F.;Pollitt, H.;Knobloch, F.
通讯作者：
Knobloch, F.